- Devel - libvirt List Archives

[libvirt] 802.1q vlan-tagging support for libvirt
by Klaus Heinrich Kiwi 27 Apr '09

27 Apr '09

Are there any plans to support configuring 802.1q VLAN tagging through libvirt? My understanding is that libvirt would use vconfig to create tagged interfaces, while using a physical interface as trunk (e.g., eth0 is the trunk, eth0.20 the interface with the '20' vlan tag). Then it would add the tagged interface (eth0.20) to a bridge with the guest virtual interface. I don't know how libvirt would need to be extended to be able to properly 'manage' those 802.1q-enabled virtual switches. Another question would be how libvirt-CIM would support this. Is anyone interested/working on this? Thanks, -Klaus -- Klaus Heinrich Kiwi <klausk(a)linux.vnet.ibm.com> Linux Security Development, IBM Linux Technology Center

7 11

[libvirt] Roadmap, beyond 0.6.3
by Daniel Veillard 24 Apr '09

24 Apr '09

Okay now that one is out, let's see what's next: First to try to keep up with monthly releases more or less, I would suggest a new release around May 25, which would mean entering code feature freeze around May 18, so that's nearly 4 weeks for development. I would assume it's 0.6.4 unless something major lands worth indicating a new level. There is a number of things we should try to do by then: - the review and inclusion of OpenNebula driver - the review and inclusion of Power Hypervisor driver - the netcf based networking setup APIs, hopefully this could help on the frequent networking support questions - finising NPIV now that the interface for node storage create and destroy is part of the API, maybe other storage devices could be plugged too - improve the documentation, it's something we (i.e. Red Hat) are commited to do, but it need to be a full part of the project too, rewiewing and increasing documentation will be helpful. - work on the test suite and augment it, Dan Berrange posted about libvirt-TCK framework, help augmenting it is welcome http://www.mail-archive.com/libvir-list@redhat.com/msg12703.html http://libvirt.org/hg/libvirt-tck - and there is number of small fixes and buglet we would need to find and fix but hopefully 0.6.3 is good enough we won't spend too much time chasing new problems ! If we could get most of this in 4 weeks time that would be impressive, but let's work on it :-) Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

1 0

[libvirt] Release of libvirt-0.6.3
by Daniel Veillard 24 Apr '09

24 Apr '09

As planned it has landed on the server at: ftp://libvirt.org/libvirt/ The main points are the VirtualBox driver and a number of bug fixes: * New features: - VirtualBox driver support (Pritesh Kothari) - virt-xml-validate new command (Daniel Berrange) * Portability: - patch to build on Centos (Joseph Shraibman) - build breakage (Anton Protopopov) * Documentation: - Linux Containers documentation (Serge Hallyn) - improvement and updates of architecture pages - fix virNodeGetFreeMemory documentation to reflect reality - man page cleanups (Daniel Berrange) - man page typo (Robert P. J. Day) - VirtualBox Documentation (Pritesh Kothari) * Bug fixes: - veth off-by-one error (Dan Smith) - vcpupin to inactive Xen crash (Takahashi Tomohiro) - virsh ttyconsole return value - use format= not fmt= on QEmu commandline (Mark McLoughlin) - use UUID for internal domain lookups (Daniel Berrange) - remote domain ID related bugs (Daniel Berrange) - QEmu pidfile handling bugs (Daniel Berrange) - network config handling on old Xen (Daniel Berrange) * Improvements: - add SCSI storage rescan (David Allan) - rootless LXC containers support improvements (Serge Hallyn) - getHostname support for LXC (Dan Smith) - cleanup and logging output of some domain functions (Guido Gunther) - drop pool lock when allocating volumes (Cole Robinson) - LXC handle kernel without CLONE_NEWUSER support (Serge Hallyn) - cpu pinning on defined Xen domains (Takahashi Tomohiro) - dynamic bridge names support (Soren Hansen) - LXC use of private /dev/pts when available (Daniel Berrange) - virNodeDeviceCreateXML and virNodeDeviceDestroy entry points (Dave Allan) * Cleanups: - don't hardcode getgrnam_r buffer to 1024 bytes (Guido Gunther) - qemudBuildCommandLine API cleanup (Daniel Berrange) Thanks to everybody who helped with the release, and welcome to the peple who joined the project recently ! Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

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[libvirt] PATCH: Public API plumbing for virNodeDeviceCreateXML/Destroy
by Daniel P. Berrange 24 Apr '09

24 Apr '09

As previously discussed, Dave Allen's reworking the NPIV patches to do creation/deleation of vports via the node device APIs. Thus, this patch adds the 2 new APIs required for this approach. Daniel diff -r 2d1278bdf31f include/libvirt/libvirt.h --- a/include/libvirt/libvirt.h Fri Apr 24 11:01:11 2009 +0100 +++ b/include/libvirt/libvirt.h Fri Apr 24 13:06:12 2009 +0100 @@ -1124,6 +1124,12 @@ int virNodeDeviceDet int virNodeDeviceReAttach (virNodeDevicePtr dev); int virNodeDeviceReset (virNodeDevicePtr dev); +virNodeDevicePtr virNodeDeviceCreateXML (virConnectPtr conn, + const char *xmlDesc, + unsigned int flags); + +int virNodeDeviceDestroy (virNodeDevicePtr dev); + /* * Domain Event Notification */ diff -r 2d1278bdf31f include/libvirt/libvirt.h.in --- a/include/libvirt/libvirt.h.in Fri Apr 24 11:01:11 2009 +0100 +++ b/include/libvirt/libvirt.h.in Fri Apr 24 13:06:12 2009 +0100 @@ -1124,6 +1124,12 @@ int virNodeDeviceDet int virNodeDeviceReAttach (virNodeDevicePtr dev); int virNodeDeviceReset (virNodeDevicePtr dev); +virNodeDevicePtr virNodeDeviceCreateXML (virConnectPtr conn, + const char *xmlDesc, + unsigned int flags); + +int virNodeDeviceDestroy (virNodeDevicePtr dev); + /* * Domain Event Notification */ diff -r 2d1278bdf31f qemud/remote.c --- a/qemud/remote.c Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote.c Fri Apr 24 13:06:12 2009 +0100 @@ -4323,6 +4323,54 @@ remoteDispatchNodeDeviceReset (struct qe } +static int +remoteDispatchNodeDeviceCreateXml(struct qemud_server *server ATTRIBUTE_UNUSED, + struct qemud_client *client ATTRIBUTE_UNUSED, + virConnectPtr conn, + remote_error *rerr, + remote_node_device_create_xml_args *args, + remote_node_device_create_xml_ret *ret) +{ + virNodeDevicePtr dev; + + dev = virNodeDeviceCreateXML (conn, args->xml_desc, args->flags); + if (dev == NULL) { + remoteDispatchConnError(rerr, conn); + return -1; + } + + make_nonnull_node_device (&ret->dev, dev); + virNodeDeviceFree(dev); + + return 0; +} + + +static int +remoteDispatchNodeDeviceDestroy(struct qemud_server *server ATTRIBUTE_UNUSED, + struct qemud_client *client ATTRIBUTE_UNUSED, + virConnectPtr conn, + remote_error *rerr, + remote_node_device_destroy_args *args, + void *ret ATTRIBUTE_UNUSED) +{ + virNodeDevicePtr dev; + + dev = virNodeDeviceLookupByName(conn, args->name); + if (dev == NULL) { + remoteDispatchFormatError(rerr, "%s", _("node_device not found")); + return -1; + } + + if (virNodeDeviceDestroy(dev) == -1) { + remoteDispatchConnError(rerr, conn); + return -1; + } + + return 0; +} + + /************************** * Async Events **************************/ diff -r 2d1278bdf31f qemud/remote_dispatch_args.h --- a/qemud/remote_dispatch_args.h Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_dispatch_args.h Fri Apr 24 13:06:12 2009 +0100 @@ -103,3 +103,5 @@ remote_node_device_re_attach_args val_remote_node_device_re_attach_args; remote_node_device_reset_args val_remote_node_device_reset_args; remote_domain_get_security_label_args val_remote_domain_get_security_label_args; + remote_node_device_create_xml_args val_remote_node_device_create_xml_args; + remote_node_device_destroy_args val_remote_node_device_destroy_args; diff -r 2d1278bdf31f qemud/remote_dispatch_prototypes.h --- a/qemud/remote_dispatch_prototypes.h Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_dispatch_prototypes.h Fri Apr 24 13:06:12 2009 +0100 @@ -527,6 +527,20 @@ static int remoteDispatchNetworkUndefine remote_error *err, remote_network_undefine_args *args, void *ret); +static int remoteDispatchNodeDeviceCreateXml( + struct qemud_server *server, + struct qemud_client *client, + virConnectPtr conn, + remote_error *err, + remote_node_device_create_xml_args *args, + remote_node_device_create_xml_ret *ret); +static int remoteDispatchNodeDeviceDestroy( + struct qemud_server *server, + struct qemud_client *client, + virConnectPtr conn, + remote_error *err, + remote_node_device_destroy_args *args, + void *ret); static int remoteDispatchNodeDeviceDettach( struct qemud_server *server, struct qemud_client *client, diff -r 2d1278bdf31f qemud/remote_dispatch_ret.h --- a/qemud/remote_dispatch_ret.h Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_dispatch_ret.h Fri Apr 24 13:06:12 2009 +0100 @@ -88,3 +88,4 @@ remote_node_device_list_caps_ret val_remote_node_device_list_caps_ret; remote_domain_get_security_label_ret val_remote_domain_get_security_label_ret; remote_node_get_security_model_ret val_remote_node_get_security_model_ret; + remote_node_device_create_xml_ret val_remote_node_device_create_xml_ret; diff -r 2d1278bdf31f qemud/remote_dispatch_table.h --- a/qemud/remote_dispatch_table.h Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_dispatch_table.h Fri Apr 24 13:06:12 2009 +0100 @@ -607,13 +607,23 @@ .args_filter = (xdrproc_t) xdr_remote_node_device_reset_args, .ret_filter = (xdrproc_t) xdr_void, }, -{ /* DomainGetSecurityLabel => 118 */ +{ /* DomainGetSecurityLabel => 121 */ .fn = (dispatch_fn) remoteDispatchDomainGetSecurityLabel, .args_filter = (xdrproc_t) xdr_remote_domain_get_security_label_args, .ret_filter = (xdrproc_t) xdr_remote_domain_get_security_label_ret, }, -{ /* NodeGetSecurityModel => 119 */ +{ /* NodeGetSecurityModel => 122 */ .fn = (dispatch_fn) remoteDispatchNodeGetSecurityModel, .args_filter = (xdrproc_t) xdr_void, .ret_filter = (xdrproc_t) xdr_remote_node_get_security_model_ret, }, +{ /* NodeDeviceCreateXml => 123 */ + .fn = (dispatch_fn) remoteDispatchNodeDeviceCreateXml, + .args_filter = (xdrproc_t) xdr_remote_node_device_create_xml_args, + .ret_filter = (xdrproc_t) xdr_remote_node_device_create_xml_ret, +}, +{ /* NodeDeviceDestroy => 124 */ + .fn = (dispatch_fn) remoteDispatchNodeDeviceDestroy, + .args_filter = (xdrproc_t) xdr_remote_node_device_destroy_args, + .ret_filter = (xdrproc_t) xdr_void, +}, diff -r 2d1278bdf31f qemud/remote_protocol.c --- a/qemud/remote_protocol.c Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_protocol.c Fri Apr 24 13:06:12 2009 +0100 @@ -2230,6 +2230,35 @@ xdr_remote_node_device_reset_args (XDR * } bool_t +xdr_remote_node_device_create_xml_args (XDR *xdrs, remote_node_device_create_xml_args *objp) +{ + + if (!xdr_remote_nonnull_string (xdrs, &objp->xml_desc)) + return FALSE; + if (!xdr_int (xdrs, &objp->flags)) + return FALSE; + return TRUE; +} + +bool_t +xdr_remote_node_device_create_xml_ret (XDR *xdrs, remote_node_device_create_xml_ret *objp) +{ + + if (!xdr_remote_nonnull_node_device (xdrs, &objp->dev)) + return FALSE; + return TRUE; +} + +bool_t +xdr_remote_node_device_destroy_args (XDR *xdrs, remote_node_device_destroy_args *objp) +{ + + if (!xdr_remote_nonnull_string (xdrs, &objp->name)) + return FALSE; + return TRUE; +} + +bool_t xdr_remote_domain_events_register_ret (XDR *xdrs, remote_domain_events_register_ret *objp) { diff -r 2d1278bdf31f qemud/remote_protocol.h --- a/qemud/remote_protocol.h Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_protocol.h Fri Apr 24 13:06:12 2009 +0100 @@ -1255,6 +1255,22 @@ struct remote_node_device_reset_args { }; typedef struct remote_node_device_reset_args remote_node_device_reset_args; +struct remote_node_device_create_xml_args { + remote_nonnull_string xml_desc; + int flags; +}; +typedef struct remote_node_device_create_xml_args remote_node_device_create_xml_args; + +struct remote_node_device_create_xml_ret { + remote_nonnull_node_device dev; +}; +typedef struct remote_node_device_create_xml_ret remote_node_device_create_xml_ret; + +struct remote_node_device_destroy_args { + remote_nonnull_string name; +}; +typedef struct remote_node_device_destroy_args remote_node_device_destroy_args; + struct remote_domain_events_register_ret { int cb_registered; }; @@ -1397,6 +1413,8 @@ enum remote_procedure { REMOTE_PROC_NODE_DEVICE_RESET = 120, REMOTE_PROC_DOMAIN_GET_SECURITY_LABEL = 121, REMOTE_PROC_NODE_GET_SECURITY_MODEL = 122, + REMOTE_PROC_NODE_DEVICE_CREATE_XML = 123, + REMOTE_PROC_NODE_DEVICE_DESTROY = 124, }; typedef enum remote_procedure remote_procedure; @@ -1629,6 +1647,9 @@ extern bool_t xdr_remote_node_device_li extern bool_t xdr_remote_node_device_dettach_args (XDR *, remote_node_device_dettach_args*); extern bool_t xdr_remote_node_device_re_attach_args (XDR *, remote_node_device_re_attach_args*); extern bool_t xdr_remote_node_device_reset_args (XDR *, remote_node_device_reset_args*); +extern bool_t xdr_remote_node_device_create_xml_args (XDR *, remote_node_device_create_xml_args*); +extern bool_t xdr_remote_node_device_create_xml_ret (XDR *, remote_node_device_create_xml_ret*); +extern bool_t xdr_remote_node_device_destroy_args (XDR *, remote_node_device_destroy_args*); extern bool_t xdr_remote_domain_events_register_ret (XDR *, remote_domain_events_register_ret*); extern bool_t xdr_remote_domain_events_deregister_ret (XDR *, remote_domain_events_deregister_ret*); extern bool_t xdr_remote_domain_event_ret (XDR *, remote_domain_event_ret*); @@ -1840,6 +1861,9 @@ extern bool_t xdr_remote_node_device_lis extern bool_t xdr_remote_node_device_dettach_args (); extern bool_t xdr_remote_node_device_re_attach_args (); extern bool_t xdr_remote_node_device_reset_args (); +extern bool_t xdr_remote_node_device_create_xml_args (); +extern bool_t xdr_remote_node_device_create_xml_ret (); +extern bool_t xdr_remote_node_device_destroy_args (); extern bool_t xdr_remote_domain_events_register_ret (); extern bool_t xdr_remote_domain_events_deregister_ret (); extern bool_t xdr_remote_domain_event_ret (); diff -r 2d1278bdf31f qemud/remote_protocol.x --- a/qemud/remote_protocol.x Fri Apr 24 11:01:11 2009 +0100 +++ b/qemud/remote_protocol.x Fri Apr 24 13:06:12 2009 +0100 @@ -1109,6 +1109,19 @@ struct remote_node_device_reset_args { remote_nonnull_string name; }; +struct remote_node_device_create_xml_args { + remote_nonnull_string xml_desc; + int flags; +}; + +struct remote_node_device_create_xml_ret { + remote_nonnull_node_device dev; +}; + +struct remote_node_device_destroy_args { + remote_nonnull_string name; +}; + /** * Events Register/Deregister: @@ -1270,7 +1283,10 @@ enum remote_procedure { REMOTE_PROC_NODE_DEVICE_RESET = 120, REMOTE_PROC_DOMAIN_GET_SECURITY_LABEL = 121, - REMOTE_PROC_NODE_GET_SECURITY_MODEL = 122 + REMOTE_PROC_NODE_GET_SECURITY_MODEL = 122, + + REMOTE_PROC_NODE_DEVICE_CREATE_XML = 123, + REMOTE_PROC_NODE_DEVICE_DESTROY = 124 }; /* Custom RPC structure. */ diff -r 2d1278bdf31f src/driver.h --- a/src/driver.h Fri Apr 24 11:01:11 2009 +0100 +++ b/src/driver.h Fri Apr 24 13:06:12 2009 +0100 @@ -684,6 +684,11 @@ typedef int (*virDevMonDeviceListCaps)(v char **const names, int maxnames); +typedef virNodeDevicePtr (*virDrvNodeDeviceCreateXML)(virConnectPtr conn, + const char *xmlDesc, + unsigned int flags); +typedef int (*virDrvNodeDeviceDestroy)(virNodeDevicePtr dev); + /** * _virDeviceMonitor: * @@ -702,6 +707,8 @@ struct _virDeviceMonitor { virDevMonDeviceGetParent deviceGetParent; virDevMonDeviceNumOfCaps deviceNumOfCaps; virDevMonDeviceListCaps deviceListCaps; + virDrvNodeDeviceCreateXML deviceCreateXML; + virDrvNodeDeviceDestroy deviceDestroy; }; /* diff -r 2d1278bdf31f src/libvirt.c --- a/src/libvirt.c Fri Apr 24 11:01:11 2009 +0100 +++ b/src/libvirt.c Fri Apr 24 13:06:12 2009 +0100 @@ -7491,6 +7491,103 @@ error: } +/** + * virNodeDeviceCreateXML: + * @conn: pointer to the hypervisor connection + * @xmlDesc: string containing an XML description of the device to be created + * @flags: callers should always pass 0 + * + * Create a new device on the VM host machine, for example, virtual + * HBAs created using vport_create. + * + * Returns a node device object if successful, NULL in case of failure + */ +virNodeDevicePtr +virNodeDeviceCreateXML(virConnectPtr conn, + const char *xmlDesc, + unsigned int flags) +{ + VIR_DEBUG("conn=%p, xmlDesc=%s, flags=%d", conn, xmlDesc, flags); + + virResetLastError(); + + if (!VIR_IS_CONNECT(conn)) { + virLibConnError(NULL, VIR_ERR_INVALID_CONN, __FUNCTION__); + return NULL; + } + + if (conn->flags & VIR_CONNECT_RO) { + virLibConnError(conn, VIR_ERR_OPERATION_DENIED, __FUNCTION__); + goto error; + } + + if (xmlDesc == NULL) { + virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__); + goto error; + } + + if (conn->deviceMonitor->deviceCreateXML) { + virNodeDevicePtr dev = conn->deviceMonitor->deviceCreateXML(conn, xmlDesc, flags); + if (dev == NULL) + goto error; + return dev; + } + + virLibConnError (conn, VIR_ERR_NO_SUPPORT, __FUNCTION__); + +error: + /* Copy to connection error object for back compatability */ + virSetConnError(conn); + return NULL; +} + + +/** + * virNodeDeviceDestroy: + * @dev: a device object + * + * Destroy the device object. The virtual device is removed from the host operating system. + * This function may require privileged access + * + * Returns 0 in case of success and -1 in case of failure. + */ +int +virNodeDeviceDestroy(virNodeDevicePtr dev) +{ + int retval = 0; + + DEBUG("dev=%p", dev); + + virResetLastError(); + + if (!VIR_IS_CONNECTED_NODE_DEVICE(dev)) { + virLibNodeDeviceError(NULL, VIR_ERR_INVALID_NODE_DEVICE, __FUNCTION__); + return (-1); + } + + if (dev->conn->flags & VIR_CONNECT_RO) { + virLibConnError(dev->conn, VIR_ERR_OPERATION_DENIED, __FUNCTION__); + goto error; + } + + if (dev->conn->deviceMonitor->deviceDestroy) { + retval = dev->conn->deviceMonitor->deviceDestroy(dev); + if (retval < 0) { + goto error; + } + + return 0; + } + + virLibConnError (dev->conn, VIR_ERR_NO_SUPPORT, __FUNCTION__); + +error: + /* Copy to connection error object for back compatability */ + virSetConnError(dev->conn); + return -1; +} + + /* * Domain Event Notification */ diff -r 2d1278bdf31f src/libvirt_public.syms --- a/src/libvirt_public.syms Fri Apr 24 11:01:11 2009 +0100 +++ b/src/libvirt_public.syms Fri Apr 24 13:06:12 2009 +0100 @@ -258,4 +258,10 @@ LIBVIRT_0.6.1 { virNodeGetSecurityModel; } LIBVIRT_0.6.0; +LIBVIRT_0.6.3 { + global: + virNodeDeviceCreateXML; + virNodeDeviceDestroy; +} LIBVIRT_0.6.1; + # .... define new API here using predicted next version number .... diff -r 2d1278bdf31f src/remote_internal.c --- a/src/remote_internal.c Fri Apr 24 11:01:11 2009 +0100 +++ b/src/remote_internal.c Fri Apr 24 13:06:12 2009 +0100 @@ -4987,6 +4987,59 @@ done: } +static virNodeDevicePtr +remoteNodeDeviceCreateXML(virConnectPtr conn, + const char *xmlDesc, + unsigned int flags) +{ + remote_node_device_create_xml_args args; + remote_node_device_create_xml_ret ret; + virNodeDevicePtr dev = NULL; + struct private_data *priv = conn->privateData; + + remoteDriverLock(priv); + + memset(&ret, 0, sizeof ret); + args.xml_desc = (char *)xmlDesc; + args.flags = flags; + + if (call(conn, priv, 0, REMOTE_PROC_NODE_DEVICE_CREATE_XML, + (xdrproc_t) xdr_remote_node_device_create_xml_args, (char *) &args, + (xdrproc_t) xdr_remote_node_device_create_xml_ret, (char *) &ret) == -1) + goto done; + + dev = get_nonnull_node_device(conn, ret.dev); + xdr_free ((xdrproc_t) xdr_remote_node_device_create_xml_ret, (char *) &ret); + +done: + remoteDriverUnlock(priv); + return dev; +} + +static int +remoteNodeDeviceDestroy(virNodeDevicePtr dev) +{ + int rv = -1; + remote_node_device_destroy_args args; + struct private_data *priv = dev->conn->privateData; + + remoteDriverLock(priv); + + args.name = dev->name; + + if (call(dev->conn, priv, 0, REMOTE_PROC_NODE_DEVICE_RESET, + (xdrproc_t) xdr_remote_node_device_destroy_args, (char *) &args, + (xdrproc_t) xdr_void, (char *) NULL) == -1) + goto done; + + rv = 0; + +done: + remoteDriverUnlock(priv); + return rv; +} + + /*----------------------------------------------------------------------*/ static int @@ -6991,6 +7044,8 @@ static virDeviceMonitor dev_monitor = { .deviceGetParent = remoteNodeDeviceGetParent, .deviceNumOfCaps = remoteNodeDeviceNumOfCaps, .deviceListCaps = remoteNodeDeviceListCaps, + .deviceCreateXML = remoteNodeDeviceCreateXML, + .deviceDestroy = remoteNodeDeviceDestroy }; -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

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[libvirt] Xen network interface behavior with 0.6.2
by Kaitlin Rupert 24 Apr '09

24 Apr '09

Hi, I'm using libvirt 0.6.2 to create a Xen guest with a network type interface (see XML below). When the guest is defined, the interface is converted to an ethernet type interface. If the guest is started, the interface is then converted to a bridge type interface. The progression from network type to ethernet type to bridge type seems odd to me. With older versions of libvirt, the network type interface was converted to bridge type during the define, so I'm curious what the reasoning is here.. Is this the expected behavior? Also, the XML for the bridge interface in 0.6.2 doesn't include the source network. This information should be available, so I'm not sure why its not being set in the XML.. Thanks! ================= # virsh list --all Id Name State ---------------------------------- 0 Domain-0 running - rstest_domain shut off # cat tmp <domain type="xen"> <name>hd_domain</name> <on_poweroff>destroy</on_poweroff> <on_crash>destroy</on_crash> <uuid>f99fd6b6-1434-4bc2-88e0-1ed9c8c6f8e9</uuid> <os> <type>linux</type> <kernel>/tmp/default-xen-kernel</kernel> <initrd>/tmp/default-xen-initrd</initrd> <cmdline/> </os> <currentMemory>131072</currentMemory> <memory>131072</memory> <vcpu>1</vcpu> <devices> <disk type="file" device="disk"> <source file="/tmp/default-xen-dimage"/> <target dev="xvda"/> </disk> <interface type="network"> <mac address="00:11:22:33:44:aa"/> <source network="default"/> </interface> <input type="mouse" bus="xen"/> <graphics type="vnc" port="-1" listen="127.0.0.1" keymap="en-us"/> </devices> </domain> # virsh define tmp Domain hd_domain defined from tmp # virsh list --all Id Name State ---------------------------------- 0 Domain-0 running - hd_domain shut off - rstest_domain shut off [root@elm3b25 cimtest]# virsh dumpxml hd_domain <domain type='xen'> <name>hd_domain</name> <uuid>f99fd6b6-1434-4bc2-88e0-1ed9c8c6f8e9</uuid> <memory>131072</memory> <currentMemory>131072</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='xenpv'>linux</type> <kernel>/tmp/default-xen-kernel</kernel> <initrd>/tmp/default-xen-initrd</initrd> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <disk type='file' device='disk'> <driver name='file'/> <source file='/tmp/default-xen-dimage'/> <target dev='xvda' bus='xen'/> </disk> <interface type='ethernet'> <mac address='00:11:22:33:44:aa'/> </interface> <console type='pty'> <target port='0'/> </console> <input type='mouse' bus='xen'/> <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1' keymap='en-us'/> </devices> </domain> # virsh start hd_domain Domain hd_domain started [root@elm3b25 cimtest]# virsh dumpxml hd_domain <domain type='xen' id='61'> <name>hd_domain</name> <uuid>f99fd6b6-1434-4bc2-88e0-1ed9c8c6f8e9</uuid> <memory>131072</memory> <currentMemory>131072</currentMemory> <vcpu>1</vcpu> <os> <type>linux</type> <kernel>/tmp/default-xen-kernel</kernel> <initrd>/tmp/default-xen-initrd</initrd> </os> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>restart</on_reboot> <on_crash>destroy</on_crash> <devices> <disk type='file' device='disk'> <driver name='file'/> <source file='/tmp/default-xen-dimage'/> <target dev='xvda' bus='xen'/> </disk> <interface type='bridge'> <mac address='00:11:22:33:44:aa'/> <script path='vif-bridge'/> <target dev='vif61.0'/> </interface> <console type='pty' tty='/dev/pts/4'> <source path='/dev/pts/4'/> <target port='0'/> </console> <input type='mouse' bus='xen'/> <graphics type='vnc' port='5900' autoport='yes' listen='127.0.0.1' keymap='en-us'/> </devices> </domain> -- Kaitlin Rupert IBM Linux Technology Center kaitlin(a)linux.vnet.ibm.com

3 7

[libvirt] [PATCH 1/1] Support for RDP
by Pritesh Kothari 24 Apr '09

24 Apr '09

Hi All, I have added support for RDP. Just forwarding the patch for review. Regards, Pritesh

5 15

[libvirt] PATCH: Fix mem corruption after detaching Xen device
by Daniel P. Berrange 23 Apr '09

23 Apr '09

The XM driver's implementation of the 'detach device' command is causing memory corruption, but passing the wrong size information to memmove() by passing number of elements to move, instead of amount of memory to move. This patch fixes it Daniel diff -rup libvirt-0.6.2.orig/src/xm_internal.c libvirt-0.6.2.new/src/xm_internal.c --- libvirt-0.6.2.orig/src/xm_internal.c 2009-04-03 15:04:28.000000000 +0100 +++ libvirt-0.6.2.new/src/xm_internal.c 2009-04-23 10:53:10.000000000 +0100 @@ -2912,7 +2912,8 @@ xenXMDomainDetachDevice(virDomainPtr dom if (i < (def->ndisks - 1)) memmove(def->disks + i, def->disks + i + 1, - def->ndisks - (i + 1)); + sizeof(*def->disks) * + (def->ndisks - (i + 1))); break; } } @@ -2929,7 +2930,8 @@ xenXMDomainDetachDevice(virDomainPtr dom if (i < (def->nnets - 1)) memmove(def->nets + i, def->nets + i + 1, - def->nnets - (i + 1)); + sizeof(*def->nets) * + (def->nnets - (i + 1))); break; } } -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 1

[libvirt] [PATCH 2/2] Updated & fixed OpenNebula driver, libvirt-0.6.2
by "Abel Míguez Rodríguez" 22 Apr '09

22 Apr '09

[PATCH 2/2] ONE Driver source files Thanks, ------------------------------------------------------------------------------------- src/opennebula/one_conf.h ------------------------------------------------------------------------------------- /* Copyright 2002-2009, Distributed Systems Architecture Group, Universidad * Complutense de Madrid (dsa-research.org) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /*-----------------------------------------------------------------------------------*/ #ifndef ONE_CONF_H #define ONE_CONF_H #include <config.h> #include "internal.h" #include "domain_conf.h" #include "capabilities.h" #include "threads.h" struct one_driver{ virMutex lock; virCapsPtr caps; virDomainObjList domains; int nextid; }; typedef struct one_driver one_driver_t; virCapsPtr oneCapsInit(void); int oneSubmitVM(virConnectPtr conn ,one_driver_t* driver, virDomainObjPtr vm); char* xmlOneTemplate(virConnectPtr conn,virDomainDefPtr def); #define oneError(conn, dom, code, fmt...) \ virReportErrorHelper(conn, VIR_FROM_ONE, code, __FILE__, \ __FUNCTION__, __LINE__, fmt) #endif /* ONE_CONF_H */ --------------------------------------------------------------------------------------------------------- src/opennebula/one_conf.c --------------------------------------------------------------------------------------------------------- /* Copyright 2002-2009, Distributed Systems Architecture Group, Universidad * Complutense de Madrid (dsa-research.org) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /*-----------------------------------------------------------------------------------*/ #include <config.h> #include <sys/utsname.h> #include "virterror_internal.h" #include "one_conf.h" #include "buf.h" #include "memory.h" #include "util.h" #define VIR_FROM_THIS VIR_FROM_ONE /* --------------------------------------------------------------------------------- */ /** * oneCapsInit initialize the driver capabilities * @return a pointer to the driver capabilities NULL in case of error */ virCapsPtr oneCapsInit(void) { struct utsname utsname; virCapsPtr caps; virCapsGuestPtr guest; uname(&utsname); if ((caps = virCapabilitiesNew(utsname.machine,0,0)) == NULL) { goto no_memory; } virCapabilitiesSetMacPrefix(caps,(unsigned char[]){ 0x52, 0x54, 0x00 }); if ((guest = virCapabilitiesAddGuest(caps, "hvm", "i686", 32, NULL, NULL, 0, NULL)) == NULL) { goto no_memory; } if (virCapabilitiesAddGuestDomain(guest, "one", NULL, NULL, 0, NULL) == NULL) { goto no_memory; } if ((guest = virCapabilitiesAddGuest(caps, "hvm", "x86_64", 64, NULL, NULL, 0, NULL)) == NULL) { goto no_memory; } if (virCapabilitiesAddGuestDomain(guest, "one", NULL, NULL, 0, NULL) == NULL) { goto no_memory; } return caps; no_memory: virCapabilitiesFree(caps); return NULL; } /* --------------------------------------------------------------------------------- */ /* --------------------------------------------------------------------------------- */ /* --------------------------------------------------------------------------------- */ /** * oneSubmitVM generates an OpenNebula description file and submits the new VM * @param driver the OpenNebula driver * @param vm the virtual machine pointer * @return the OpenNebula ID for the new VM or -1 in case of error */ int oneSubmitVM(virConnectPtr conn, one_driver_t* driver ATTRIBUTE_UNUSED, virDomainObjPtr vm) { char* templ; int oneid; if((templ=xmlOneTemplate(conn,vm->def))==NULL ) return -1; if( (oneid=c_oneAllocateTemplate(templ))<0 ){ oneError(conn, NULL, VIR_ERR_OPERATION_FAILED, "Error submitting virtual machine to OpenNebula"); VIR_FREE(templ); return -1; } VIR_FREE(templ); return oneid; } /* --------------------------------------------------------------------------------- */ /* --------------------------------------------------------------------------------- */ /* --------------------------------------------------------------------------------- */ /** * xmlOneTemplate Generate an OpenNebula template to deploy a VM from libvirt * internal Domain definition. * @param def Internal libvirt Domain definition * @return OpenNebula VM template. */ char* xmlOneTemplate(virConnectPtr conn,virDomainDefPtr def) { int i; virBuffer buf= VIR_BUFFER_INITIALIZER; virBufferVSprintf(&buf,"#OpenNebula Template automatically generated by libvirt\nNAME = %s\nCPU = %ld\nMEMORY = %ld\n", def->name, def->vcpus, (def->maxmem)/1024); /*Optional Booting OpenNebula Information:*/ if( def->os.kernel ){ virBufferVSprintf(&buf,"OS=[ kernel = \"%s\"",def->os.kernel); if(def->os.initrd) virBufferVSprintf(&buf,",\n initrd = \"%s\"",def->os.initrd); if(def->os.cmdline) virBufferVSprintf(&buf,",\n kernel_cmd = \"%s\"",def->os.cmdline); if(def->os.root) virBufferVSprintf(&buf,",\n root = \"%s\"",def->os.root); virBufferAddLit(&buf," ]\n"); } /* set Disks & NICS */ for(i=0 ; i<def->ndisks ; i++){ // missing source is only allowed at cdrom and floppy if(def->disks[i]->device==VIR_DOMAIN_DISK_DEVICE_DISK){ virBufferVSprintf(&buf, "DISK=[ type = disk,\n" " source = \"%s\",\n", def->disks[i]->src); } else if(def->disks[i]->device==VIR_DOMAIN_DISK_DEVICE_CDROM){ virBufferAddLit(&buf, "DISK=[ type = cdrom,\n"); if(def->disks[i]->src) virBufferVSprintf(&buf, " source = \"%s\",\n",def->disks[i]->src); } else if(def->disks[i]->device==VIR_DOMAIN_DISK_DEVICE_FLOPPY){ virBufferAddLit(&buf, "DISK=[ type = floppy,\n"); if(def->disks[i]->src) virBufferVSprintf(&buf, " source = \"%s\",\n",def->disks[i]->src); } virBufferVSprintf(&buf, " target = \"%s\",\n" " readonly =", def->disks[i]->dst); if(def->disks[i]->readonly) virBufferAddLit(&buf,"\"yes\"]\n"); else virBufferAddLit(&buf,"\"no\"]\n"); } for(i=0 ; i< def->nnets ; i++) { if ( !def->nets[i] ) { continue; } switch(def->nets[i]->type) { case VIR_DOMAIN_NET_TYPE_BRIDGE: virBufferVSprintf(&buf,"NIC=[ bridge =\"%s\",\n",def->nets[i]->data.bridge.brname); if(def->nets[i]->ifname) virBufferVSprintf(&buf," target =\"%s\",\n",def->nets[i]->ifname); virBufferVSprintf(&buf," mac =\"%02x:%02x:%02x:%02x:%02x:%02x\" ]\n", def->nets[i]->mac[0],def->nets[i]->mac[1], def->nets[i]->mac[2],def->nets[i]->mac[3], def->nets[i]->mac[4],def->nets[i]->mac[5]); break; case VIR_DOMAIN_NET_TYPE_NETWORK: virBufferVSprintf(&buf,"NIC=[ network=\"%s\"",def->nets[i]->data.network.name); if(def->nets[i]->ifname) virBufferVSprintf(&buf,",\n target =\"%s\"",def->nets[i]->ifname); virBufferAddLit(&buf," ]\n"); break; default: break; } } if(def->graphics!=NULL){ if(def->graphics->type==VIR_DOMAIN_GRAPHICS_TYPE_VNC){ virBufferAddLit(&buf,"GRAPHICS = [\n type = \"vnc\""); if(def->graphics->data.vnc.listenAddr!=NULL) virBufferVSprintf(&buf,",\n listen = \"%s\"",def->graphics->data.vnc.listenAddr); if(def->graphics->data.vnc.autoport==0) virBufferVSprintf(&buf,",\n port = \"%d\"",def->graphics->data.vnc.port); if(def->graphics->data.vnc.passwd!=NULL) virBufferVSprintf(&buf,",\n passwd = \"%s\"",def->graphics->data.vnc.passwd); virBufferAddLit(&buf," ]\n"); } else //graphics.type==VIR_DOMAIN_GRAPHICS_TYPE_SDL virBufferAddLit(&buf,"GRAPHICS = [\n type = \"sdl\" ]\n"); } if (virBufferError(&buf)) goto no_memory; return virBufferContentAndReset(&buf); no_memory: virReportOOMError(conn); char* tmp = virBufferContentAndReset(&buf); VIR_FREE(tmp); return NULL; }; -------------------------------------------------------------------------------------------------------- src/opennebula/one_driver.h ------------------------------------------------------------------------------------------------------- /* Copyright 2002-2009, Distributed Systems Architecture Group, Universidad * Complutense de Madrid (dsa-research.org) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /*---------------------------------------------------------------------------*/ #ifndef ONE_DRIVER_H #define ONE_DRIVER_H #include <config.h> #include <OneClient.h> int oneRegister(void); #endif /* ONE_DRIVER_H */ -------------------------------------------------------------------------------------------------------- src/opennebula/one_driver.c ------------------------------------------------------------------------------------------------------- /* Copyright 2002-2009, Distributed Systems Architecture Group, Universidad * Complutense de Madrid (dsa-research.org) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ /*---------------------------------------------------------------------------*/ #include <config.h> #include <fcntl.h> #include <sched.h> #include <sys/utsname.h> #include <stdbool.h> #include <string.h> #include <sys/types.h> #include <sys/socket.h> #include <sys/un.h> #include <sys/poll.h> #include <unistd.h> #include <wait.h> #include <sys/time.h> #include "virterror_internal.h" #include "logging.h" #include "datatypes.h" #include "one_conf.h" #include "one_driver.h" #include "memory.h" #include "util.h" #include "bridge.h" #include "veth.h" #define VIR_FROM_THIS VIR_FROM_ONE static int oneStartup(void); static int oneShutdown(void); static int oneActive(void); static void oneDriverLock(one_driver_t* driver) { virMutexLock(&driver->lock); } static void oneDriverUnlock(one_driver_t* driver) { virMutexUnlock(&driver->lock); } static one_driver_t *one_driver =NULL; static virDrvOpenStatus oneOpen(virConnectPtr conn, virConnectAuthPtr auth ATTRIBUTE_UNUSED, int flags ATTRIBUTE_UNUSED) { /* Verify uri was specified */ if (conn->uri == NULL) { conn->uri = xmlParseURI("one:///"); if (!conn->uri) { virReportOOMError(conn); return VIR_DRV_OPEN_ERROR; } } else if (conn->uri->scheme == NULL || STRNEQ(conn->uri->scheme, "one")) { goto declineConnection; } conn->privateData = one_driver; return VIR_DRV_OPEN_SUCCESS; declineConnection: return VIR_DRV_OPEN_DECLINED; } static int oneClose(virConnectPtr conn) { conn->privateData = NULL; return 0; } static virDomainPtr oneDomainLookupByID(virConnectPtr conn, int id) { one_driver_t *driver = (one_driver_t *)conn->privateData; virDomainPtr dom = NULL; virDomainObjPtr vm = NULL; oneDriverLock(driver); vm = virDomainFindByID(&driver->domains, id); oneDriverUnlock(driver); if (!vm) { oneError(conn, NULL, VIR_ERR_NO_DOMAIN, NULL); goto return_point; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) { dom->id = vm->def->id; } return_point: if(vm) { virDomainObjUnlock(vm); } return dom; } static virDomainPtr oneDomainLookupByUUID(virConnectPtr conn, const unsigned char *uuid) { one_driver_t *driver = (one_driver_t *)conn->privateData; virDomainPtr dom = NULL; virDomainObjPtr vm = NULL; oneDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, uuid); oneDriverUnlock(driver); if (!vm) { oneError(conn, NULL, VIR_ERR_NO_DOMAIN, NULL); goto return_point; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) { dom->id = vm->def->id; } return_point: if(vm) { virDomainObjUnlock(vm); } return dom; } static virDomainPtr oneDomainLookupByName(virConnectPtr conn, const char *name) { one_driver_t *driver = (one_driver_t *)conn->privateData; virDomainObjPtr vm = NULL; virDomainPtr dom=NULL; oneDriverLock(driver); vm = virDomainFindByName(&driver->domains, name); oneDriverUnlock(driver); if (!vm) { oneError(conn, NULL, VIR_ERR_NO_DOMAIN, NULL); goto return_point; } dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) { dom->id = vm->def->id; } return_point: if(vm) { virDomainObjUnlock(vm); } return dom; } static int oneListDomains(virConnectPtr conn, int *ids, int nids) { one_driver_t *driver = (one_driver_t *)conn->privateData; int got = 0, i; oneDriverLock(driver); for (i = 0 ; i < driver->domains.count && got < nids ; i++){ virDomainObjLock(driver->domains.objs[i]); if (virDomainIsActive(driver->domains.objs[i])) ids[got++] = driver->domains.objs[i]->def->id; virDomainObjUnlock(driver->domains.objs[i]); } oneDriverUnlock(driver); return got; } static int oneNumDomains(virConnectPtr conn) { one_driver_t *driver = (one_driver_t *)conn->privateData; int n = 0, i; oneDriverLock(driver); for (i = 0 ; i < driver->domains.count ; i++){ virDomainObjLock(driver->domains.objs[i]); if (virDomainIsActive(driver->domains.objs[i])) n++; virDomainObjUnlock(driver->domains.objs[i]); } oneDriverUnlock(driver); return n; } static int oneListDefinedDomains(virConnectPtr conn, char **const names, int nnames) { one_driver_t *driver = (one_driver_t *)conn->privateData; int got = 0, i; oneDriverLock(driver); for (i = 0 ; i < driver->domains.count && got < nnames ; i++) { virDomainObjLock(driver->domains.objs[i]); if (!virDomainIsActive(driver->domains.objs[i])) { if (!(names[got++] = strdup(driver->domains.objs[i]->def->name))) { virReportOOMError(conn); virDomainObjUnlock(driver->domains.objs[i]); goto cleanup; } } virDomainObjUnlock(driver->domains.objs[i]); } oneDriverUnlock(driver); return got; cleanup: for (i = 0 ; i < got ; i++) VIR_FREE(names[i]); oneDriverUnlock(driver); return -1; } static int oneNumDefinedDomains(virConnectPtr conn) { one_driver_t *driver = (one_driver_t *)conn->privateData; int n = 0, i; oneDriverLock(driver); for (i = 0 ; i < driver->domains.count ; i++){ virDomainObjLock(driver->domains.objs[i]); if (!virDomainIsActive(driver->domains.objs[i])) n++; virDomainObjUnlock(driver->domains.objs[i]); } oneDriverUnlock(driver); return n; } static virDomainPtr oneDomainDefine(virConnectPtr conn, const char *xml) { one_driver_t *driver = (one_driver_t *)conn->privateData; virDomainDefPtr def; virDomainObjPtr vm; virDomainPtr dom=NULL; oneDriverLock(driver); if (!(def = virDomainDefParseString(conn, driver->caps, xml, VIR_DOMAIN_XML_INACTIVE))) goto return_point; if (!(vm = virDomainAssignDef(conn, &driver->domains, def))) { virDomainDefFree(def); goto return_point; } vm->def->id = -1; vm->persistent = 1; dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) { dom->id = vm->def->id; } virDomainObjUnlock(vm); return_point: oneDriverUnlock(driver); return dom; } static int oneDomainUndefine(virDomainPtr dom) { one_driver_t *driver = (one_driver_t *)dom->conn->privateData; virDomainObjPtr vm = NULL; int ret=-1; oneDriverLock(driver); vm =virDomainFindByUUID(&driver->domains, dom->uuid); if (!vm) { oneError(dom->conn, dom, VIR_ERR_INVALID_DOMAIN, "no domain with matching uuid"); goto return_point; } if (!vm->persistent) { oneError(dom->conn, dom, VIR_ERR_INTERNAL_ERROR, "cannot undefine transient domain"); goto return_point; } virDomainRemoveInactive(&driver->domains, vm); ret=0; return_point: oneDriverUnlock(driver); return ret; } static int oneDomainGetInfo(virDomainPtr dom, virDomainInfoPtr info) { one_driver_t *driver = (one_driver_t *)dom->conn->privateData; struct timeval tv; virDomainObjPtr vm; oneDriverLock(driver); vm= virDomainFindByUUID(&driver->domains, dom->uuid); oneDriverUnlock(driver); if (!vm) { oneError(dom->conn,dom, VIR_ERR_INVALID_DOMAIN, "%s", _("no domain with matching uuid")); return -1; } if(gettimeofday(&tv,NULL)<0) { oneError(dom->conn,dom, VIR_ERR_INTERNAL_ERROR, "%s",_("getting time of day")); virDomainObjUnlock(vm); return -1; } if (!virDomainIsActive(vm)) { info->cpuTime = 0; } else { char vm_info[257]; c_oneVmInfo(vm->pid,vm_info,256); //State: char* cptr = strstr(vm_info,"STATE"); cptr = index(cptr, ':'); cptr++; int one_state=atoi(cptr); switch(one_state) { case 3: /** running */ if (vm->state!=VIR_DOMAIN_SHUTDOWN) vm->state=VIR_DOMAIN_RUNNING; break; case 5: /** pause */ vm->state=VIR_DOMAIN_PAUSED; break; case 6: /** done */ vm->state=VIR_DOMAIN_SHUTOFF; vm->def->id=-1; break; case 7: /** error */ vm->state=VIR_DOMAIN_CRASHED; break; default: break; }; //Memory: cptr=strstr(vm_info,"MEMORY"); cptr=index(cptr,':'); cptr++; vm->def->memory = atoi(cptr); //run time: cptr=strstr(vm_info,"START TIME"); cptr=index(cptr,':'); cptr++; long starttime = atol(cptr); info->cpuTime = (tv.tv_sec - starttime) *1000ll *1000ll *1000ll; } info->state = vm->state; info->maxMem = vm->def->maxmem; info->memory = vm->def->memory; info->nrVirtCpu = vm->def->vcpus; virDomainObjUnlock(vm); return 0; } static char *oneGetOSType(virDomainPtr dom) { one_driver_t *driver = (one_driver_t *)dom->conn->privateData; virDomainObjPtr vm = NULL; oneDriverLock(driver); vm =virDomainFindByUUID(&driver->domains, dom->uuid); oneDriverUnlock(driver); if (!vm) { oneError(dom->conn,dom, VIR_ERR_INVALID_DOMAIN, "%s", _("no domain with matching uuid")); return NULL; } virDomainObjUnlock(vm); return strdup(vm->def->os.type); } static int oneDomainStart(virDomainPtr dom) { virConnectPtr conn = dom->conn; one_driver_t *driver = (one_driver_t *)(conn->privateData); virDomainObjPtr vm; int ret = -1; int oneid; oneDriverLock(driver); vm = virDomainFindByName(&driver->domains, dom->name); if (!vm) { oneError(conn, dom, VIR_ERR_INVALID_DOMAIN, "no domain named %s", dom->name); goto return_point; } if((oneid = oneSubmitVM(dom->conn,driver,vm)) < 0) { goto return_point; } vm->pid=oneid; vm->def->id=driver->nextid++; vm->state=VIR_DOMAIN_BLOCKED; ret=0; return_point: if(vm) virDomainObjUnlock(vm); oneDriverUnlock(driver); return ret; } static virDomainPtr oneDomainCreateAndStart(virConnectPtr conn, const char *xml, unsigned int flags ATTRIBUTE_UNUSED) { one_driver_t *driver = (one_driver_t *)conn->privateData; virDomainObjPtr vm = NULL; virDomainDefPtr def; virDomainPtr dom = NULL; int oneid; oneDriverLock(driver); if (!(def = virDomainDefParseString(conn, driver->caps, xml, VIR_DOMAIN_XML_INACTIVE))) goto return_point; vm = virDomainFindByName(&driver->domains, def->name); if (vm) { oneError(conn,NULL, VIR_ERR_OPERATION_FAILED, _("Already an OpenNebula VM active with the name: \"%s\" id: %d "), def->name,def->id); goto return_point; } if (!(vm = virDomainAssignDef(conn, &driver->domains, def))) { virDomainDefFree(def); goto return_point; } if ((oneid = oneSubmitVM(conn, driver, vm)) < 0) { virDomainRemoveInactive(&driver->domains, vm); vm=NULL; goto return_point; } vm->def->id=driver->nextid++; vm->persistent=0; vm->pid=oneid; vm->state=VIR_DOMAIN_BLOCKED; dom = virGetDomain(conn, vm->def->name, vm->def->uuid); if (dom) { dom->id = vm->def->id; } return_point: if(vm) virDomainObjUnlock(vm); oneDriverUnlock(driver); return dom; } static int oneDomainShutdown(virDomainPtr dom) { one_driver_t *driver = (one_driver_t*)dom->conn->privateData; virDomainObjPtr vm; int ret=-1; oneDriverLock(driver); if((vm=virDomainFindByID(&driver->domains, dom->id))) { if(!(c_oneShutdown(vm->pid) ) ) { vm->state=VIR_DOMAIN_SHUTDOWN; ret= 0; goto return_point; } oneError(dom->conn, dom, VIR_ERR_OPERATION_FAILED, "Wrong state to perform action"); goto return_point; } oneError(dom->conn,dom, VIR_ERR_INVALID_DOMAIN, _("no domain with id %d"), dom->id); goto return_point; if (!vm->persistent) { virDomainRemoveInactive(&driver->domains, vm); vm = NULL; } return_point: if(vm) virDomainObjUnlock(vm); oneDriverUnlock(driver); return ret; } static int oneDomainDestroy(virDomainPtr dom) { one_driver_t *driver = (one_driver_t*)dom->conn->privateData; virDomainObjPtr vm; int ret=-1; oneDriverLock(driver); vm= virDomainFindByID(&driver->domains, dom->id); if (!vm) { oneError(dom->conn, dom, VIR_ERR_INVALID_DOMAIN, "no domain with id %d", dom->id); goto return_point; } if(c_oneCancel(vm->pid)) { /* VM not running, delete the instance at ONE DB */ if(c_oneFinalize(vm->pid)){ oneError(dom->conn, dom, VIR_ERR_OPERATION_FAILED, "Wrong state to perform action"); goto return_point; } } if(!vm->persistent) { virDomainRemoveInactive(&driver->domains,vm); vm=NULL; } ret=0; return_point: if(vm) virDomainObjUnlock(vm); oneDriverUnlock(driver); return ret; } static int oneDomainSuspend(virDomainPtr dom) { one_driver_t* driver=dom->conn->privateData; virDomainObjPtr vm; int ret=-1; oneDriverLock(driver); if ((vm=virDomainFindByID(&driver->domains,dom->id))){ if (vm->state == VIR_DOMAIN_RUNNING) { if( !(c_oneSuspend(vm->pid)) ) { vm->state=VIR_DOMAIN_PAUSED; ret=0; goto return_point; } oneError(dom->conn, dom, VIR_ERR_OPERATION_FAILED, "Wrong state to perform action"); goto return_point; } oneError(dom->conn,dom,VIR_ERR_OPERATION_FAILED, "domain is not running"); } else { oneError(dom->conn, dom, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id); } return_point: if(vm) virDomainObjUnlock(vm); oneDriverUnlock(driver); return ret; }; static int oneDomainResume(virDomainPtr dom) { one_driver_t* driver=dom->conn->privateData; virDomainObjPtr vm; int ret=-1; oneDriverLock(driver); if ((vm=virDomainFindByID(&driver->domains,dom->id))) { if (vm->state == VIR_DOMAIN_PAUSED) { if( !(c_oneResume(vm->pid)) ) { vm->state=VIR_DOMAIN_RUNNING; ret=0; goto return_point; } oneError(dom->conn, dom, VIR_ERR_OPERATION_FAILED, "Wrong state to perform action"); goto return_point; } oneError(dom->conn,dom,VIR_ERR_OPERATION_FAILED, "domain is not paused "); } else { oneError(dom->conn, dom, VIR_ERR_INVALID_DOMAIN, "no domain with matching id %d", dom->id); } return_point: if(vm) virDomainObjUnlock(vm); oneDriverUnlock(driver); return ret; }; static int oneStartup(void){ if (VIR_ALLOC(one_driver) < 0) { return -1; } if(virMutexInit(&one_driver->lock)<0){ VIR_FREE(one_driver); return -1; } c_oneStart(); oneDriverLock(one_driver); one_driver->nextid=1; if ((one_driver->caps = oneCapsInit()) == NULL) { oneDriverUnlock(one_driver); VIR_FREE(one_driver); return -1; } oneDriverUnlock(one_driver); return 0; } static int oneShutdown(void){ if (one_driver == NULL) return(-1); oneDriverLock(one_driver); virDomainObjListFree(&one_driver->domains); virCapabilitiesFree(one_driver->caps); oneDriverUnlock(one_driver); virMutexDestroy(&one_driver->lock); VIR_FREE(one_driver); one_driver = NULL; c_oneFree(); return 0; } static int oneActive(void){ unsigned int i; int active = 0; if (one_driver == NULL) return(0); oneDriverLock(one_driver); for (i = 0 ; i < one_driver->domains.count ; i++) { virDomainObjLock(one_driver->domains.objs[i]); if (virDomainIsActive(one_driver->domains.objs[i])) active = 1; virDomainObjUnlock(one_driver->domains.objs[i]); } oneDriverUnlock(one_driver); return active; } static int oneVersion(virConnectPtr conn ATTRIBUTE_UNUSED, unsigned long *hvVer) { *hvVer = 1; return 0; } static int oneGetAutostart(virDomainPtr domain ATTRIBUTE_UNUSED, int *autostart) { autostart=0; return 0; } static char* oneGetCapabilities(virConnectPtr conn){ one_driver_t* privconn=conn->privateData; char *xml; oneDriverLock(privconn); if ((xml = virCapabilitiesFormatXML(privconn->caps)) == NULL) virReportOOMError(conn); oneDriverUnlock(privconn); return xml; } /* Function Tables */ static virDriver oneDriver = { VIR_DRV_ONE, /* the number virDrvNo */ "one", /* the name of the driver */ oneOpen, /* open */ oneClose, /* close */ NULL, /* supports_feature */ NULL, /* type */ oneVersion, /* version */ NULL, /* getHostname */ NULL, /* getMaxVcpus */ NULL, /* nodeGetInfo */ oneGetCapabilities, /* getCapabilities */ oneListDomains, /* listDomains */ oneNumDomains, /* numOfDomains */ oneDomainCreateAndStart, /* domainCreateXML */ oneDomainLookupByID, /* domainLookupByID */ oneDomainLookupByUUID, /* domainLookupByUUID */ oneDomainLookupByName, /* domainLookupByName */ oneDomainSuspend, /* domainSuspend */ oneDomainResume, /* domainResume */ oneDomainShutdown, /* domainShutdown */ NULL, /* domainReboot */ oneDomainDestroy, /* domainDestroy */ oneGetOSType, /* domainGetOSType */ NULL, /* domainGetMaxMemory */ NULL, /* domainSetMaxMemory */ NULL, /* domainSetMemory */ oneDomainGetInfo, /* domainGetInfo */ NULL, /* domainSave */ NULL, /* domainRestore */ NULL, /* domainCoreDump */ NULL, /* domainSetVcpus */ NULL, /* domainPinVcpu */ NULL, /* domainGetVcpus */ NULL, /* domainGetMaxVcpus */ NULL, /* domainGetSecurityLabel */ NULL, /* nodeGetSecurityModel */ NULL, /* domainDumpXML */ oneListDefinedDomains, /* listDefinedDomains */ oneNumDefinedDomains, /* numOfDefinedDomains */ oneDomainStart, /* domainCreate */ oneDomainDefine, /* domainDefineXML */ oneDomainUndefine, /* domainUndefine */ NULL, /* domainAttachDevice */ NULL, /* domainDetachDevice */ oneGetAutostart, /* domainGetAutostart */ NULL, /* domainSetAutostart */ NULL, /* domainGetSchedulerType */ NULL, /* domainGetSchedulerParameters */ NULL, /* domainSetSchedulerParameters */ NULL, /* domainMigratePrepare */ NULL, /* domainMigratePerform */ NULL, /* domainMigrateFinish */ NULL, /* domainBlockStats */ NULL, /* domainInterfaceStats */ NULL, /* domainBlockPeek */ NULL, /* domainMemoryPeek */ NULL, /* nodeGetCellsFreeMemory */ NULL, /* getFreeMemory */ NULL, /* domainEventRegister */ NULL, /* domainEventDeregister */ NULL, /* domainMigratePrepare2 */ NULL, /* domainMigrateFinish2 */ NULL, /* nodeDeviceDettach; */ NULL, /* nodeDeviceReAttach; */ NULL, /* nodeDeviceReset; */ }; static virStateDriver oneStateDriver = { .initialize = oneStartup, .cleanup = oneShutdown, .active = oneActive, }; int oneRegister(void) { virRegisterDriver(&oneDriver); virRegisterStateDriver(&oneStateDriver); return 0; } Abel Míguez Rodríguez ---- Distributed System Architecture Group (http://dsa-research.org) GridWay, http://www.gridway.org OpenNEbula, http://www.opennebula.org

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[libvirt] live-migration is not working with libvirt-0.6.2 on RHEL5.3
by Gerrit Slomma 22 Apr '09

22 Apr '09

So i still do not get live migration up and running with libvirt-0.6.2 on RHEL5.3 My setup is as following: Host#1 rr016: RHEL5.3 2.6.18-128.el5.x86_64; 4 GB RAM; C2D T8300 Host#2 rr017: RHEL5.3 2.6.18-128.el5.x86_64; 3 GB RAM; C2D E6550 on both hosts: kvm-85 compiled rpms from sourceforge.org (current release) qemu-0.10.0 (from kvm-85) qemu-img 0.9.1-11 from EPEL libvirt-0.6.2 compiled rpms from libvirt.org (current release) + applied RHEL5-build-patch Network: bridged network-if eth0 on bridge sw0 via /etc/sysconfig/network-scripts/ifcfg-eth0 and /etc/sysconfig/network-scripts/ifcfg-sw0, nothing in /etc/libvirt/qemu/networks besides the (untouched) default.xml. iptables: disabled to avoid side-effects Images: exported from a third host via iscsi and accessible from both involved hosts if i bring up a VM on host#2 that is not defined on host#1 this VM comes up fine and i could ssh into it. [root@rr017 ~]# virsh dominfo rr019v3 Id: 5 Name: rr019v3 UUID: ff1ba599-5801-fca9-ab33-8962c2dfa46c OS Typ: hvm Status: laufend CPU(s): 2 CPU-Zeit: 26,9s Max Speicher: 1572864 kB Verwendeter Speicher: 1572864 kB Automatischer Start: deaktiviert if i try to migrate it without URI specified the migration fails with an "unknown failure" whereas the failure is obvious to me: wrong port [root@rr017 ~]# virsh migrate rr019v3 qemu+tcp://192.168.1.119:16509/system Please enter your authentication name:root Please enter your password: Fehler: Unknown failure [root@rr017 ~]# tail -f /var/log/libvirt/qemu/rr019v3.log info balloon Using KVM without synchronous MMU, ballooning disabled stop migrate "tcp:rr016:49152" migration failed cont [root@rr016 ~]# tail -f /var/log/libvirt/qemu/rr019v3.log LC_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/root USER=root LOGNAME=root /usr/bin/kvm -S -M pc -m 1536 -smp 2 -name rr019v3 -uuid ff1ba599-5801-fca9-ab33-8962c2dfa46c -monitor pty -pidfile /var/run/libvirt/qemu//rr019v3.pid -boot c -drive file=/dev/disk/by-path/ip-192.168.1.1:3260-iscsi-rr010:01-lun-6,if=ide,index=0 -net nic,macaddr=00:16:3e:69:94:05,vlan=0 -net tap,fd=17,script=,vlan=0,ifname=vnet0 -serial none -parallel none -usb -vnc 127.0.0.1:0 -k de -incoming tcp:0.0.0.0:49152 char device redirected to /dev/pts/3 info cpus * CPU #0: pc=0x00000000000ffff0 thread_id=8550 CPU #1: pc=0x00000000000ffff0 thread_id=8551 balloon 1536 trying --live as a parameter the same applies: [root@rr017 ~]# virsh migrate --live rr019v3 qemu+tcp://192.168.1.119:16509/system Please enter your authentication name:root Please enter your password: Fehler: Unknown failure [root@rr017 ~]# tail -f /var/log/libvirt/qemu/rr019v3.log info balloon Using KVM without synchronous MMU, ballooning disabled migrate "tcp:rr016:49153" migration failed [root@rr016 ~]# tail -f /var/log/libvirt/qemu/rr019v3.log C_ALL=C PATH=/sbin:/usr/sbin:/bin:/usr/bin HOME=/root USER=root LOGNAME=root /usr/bin/kvm -S -M pc -m 1536 -smp 2 -name rr019v3 -uuid ff1ba599-5801-fca9-ab33-8962c2dfa46c -monitor pty -pidfile /var/run/libvirt/qemu//rr019v3.pid -boot c -drive file=/dev/disk/by-path/ip-192.168.1.1:3260-iscsi-rr010:01-lun-6,if=ide,index=0 -net nic,macaddr=00:16:3e:69:94:05,vlan=0 -net tap,fd=17,script=,vlan=0,ifname=vnet0 -serial none -parallel none -usb -vnc 127.0.0.1:0 -k de -incoming tcp:0.0.0.0:49153 char device redirected to /dev/pts/3 info cpus * CPU #0: pc=0x00000000000ffff0 thread_id=8641 CPU #1: pc=0x00000000000ffff0 thread_id=8642 balloon 1536 Specifying the URI migration works, and the VM appears on the target-host [root@rr017 ~]# virsh migrate rr019v3 qemu+tcp://192.168.1.119:16509/system tcp:192.168.1.119:16509 Please enter your authentication name:root Please enter your password: [root@rr016 ~]# virsh list Id Name Status ---------------------------------- 3 rr019v3 laufend But the status is laufend - that means "running" in english - whereas i have to suspend and resume the VM to get it up, then it is running on the target-host. Backmigration is not possible and hangs endless, the libvirtd must be restarted on both hosts to get them back up. Specifying --live as a parameter for the migration does have the same effect on the VM as omitting the parameter. When doing the same on the commandline everything works fine, i even start the VM via ssh from the source-host on the target-host and migrate over the net with minimal downtime. Why doesn't this work? Has anybody got a working setup with RHEL5 up and running?

1 0

[libvirt] PATCH: Remove PID file before starting QEMU, and after shutdown
by Daniel P. Berrange 21 Apr '09

21 Apr '09

We spawn QEMU with a -pidfile option to write its PID out to a file. This file is never removed though, so next time the guest starts there is small race condition where we might be unlucky enough to read the old PID out of the file, instead of the new QEMU PID. This patch adds a call to remove the pidfile from disk when a guest is shut down. As an extra preventative measure, we also delete it before starting a guest Daniel diff -r ba0066a358b6 src/qemu_driver.c --- a/src/qemu_driver.c Mon Apr 20 12:10:15 2009 +0100 +++ b/src/qemu_driver.c Mon Apr 20 13:52:47 2009 +0100 @@ -1389,6 +1389,14 @@ static int qemudStartVMDaemon(virConnect if (qemuPrepareHostDevices(conn, vm->def) < 0) goto cleanup; + if ((ret = virFileDeletePid(driver->stateDir, vm->def->name)) != 0) { + virReportSystemError(conn, ret, + _("Cannot remove stale PID file for %s"), + vm->def->name); + goto cleanup; + } + + vm->def->id = driver->nextvmid++; if (qemudBuildCommandLine(conn, driver, vm->def, qemuCmdFlags, &argv, &progenv, @@ -1512,6 +1520,8 @@ cleanup: static void qemudShutdownVMDaemon(virConnectPtr conn ATTRIBUTE_UNUSED, struct qemud_driver *driver, virDomainObjPtr vm) { + int ret; + if (!virDomainIsActive(vm)) return; @@ -1556,6 +1566,12 @@ static void qemudShutdownVMDaemon(virCon VIR_WARN(_("Failed to remove domain status for %s"), vm->def->name); } + if ((ret = virFileDeletePid(driver->stateDir, vm->def->name)) != 0) { + char ebuf[1024]; + VIR_WARN(_("Failed to remove PID file for %s: %s"), + vm->def->name, virStrerror(errno, ebuf, sizeof ebuf)); + } + vm->pid = -1; vm->def->id = -1; vm->state = VIR_DOMAIN_SHUTOFF; -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] PATCH: Make VirtualBox domain IDs start from 1 instead of 0
by Daniel P. Berrange 21 Apr '09

21 Apr '09

The VirtualBox driver currently returns domain IDs starting from 0. The domain ID 0 is reserved for a special scenario. It refers to a guest which is also the host OS. ie its the guest in which libvirt is running. This guest will only exist in virtualization technology where there is a separate hypervisor / host OS, eg Xen or MicroSoft Hyper-V. Thus, it should be avoided for drivers like QEMU or VirtualBox. This patch simply rebases the virtualbox domain IDs to start from 1. Daniel Index: src/vbox/vbox_tmpl.c =================================================================== RCS file: /data/cvs/libvirt/src/vbox/vbox_tmpl.c,v retrieving revision 1.1 diff -u -p -r1.1 vbox_tmpl.c --- src/vbox/vbox_tmpl.c 17 Apr 2009 16:09:07 -0000 1.1 +++ src/vbox/vbox_tmpl.c 21 Apr 2009 10:11:48 -0000 @@ -434,7 +434,7 @@ static int vboxListDomains(virConnectPtr if ((state == MachineState_Running) || (state == MachineState_Paused) ) { ret++; - ids[j++] = i; + ids[j++] = i + 1; } } } @@ -535,6 +535,15 @@ static virDomainPtr vboxDomainLookupByID PRUint32 state; int i; + /* Internal vbox IDs start from 0, the public libvirt ID + * starts from 1, so refuse id==0, and adjust the rest*/ + if (id == 0) { + vboxError(conn, VIR_ERR_NO_DOMAIN, + _("no domain with matching id %d"), id); + return NULL; + } + id = id - 1; + if(data->vboxObj) { rc = data->vboxObj->vtbl->GetMachines(data->vboxObj, &machineCnt, &machines); if (NS_FAILED(rc)) { @@ -568,7 +577,7 @@ static virDomainPtr vboxDomainLookupByID dom = virGetDomain(conn, machineName, iidl); if (dom) - dom->id = id; + dom->id = id + 1; /* Cleanup all the XPCOM allocated stuff here */ g_pVBoxFuncs->pfnComUnallocMem(iid); @@ -645,7 +654,7 @@ static virDomainPtr vboxDomainLookupByUU if (dom) if ((state == MachineState_Running) || (state == MachineState_Paused) ) - dom->id = i; + dom->id = i + 1; } if (iid) { @@ -725,7 +734,7 @@ static virDomainPtr vboxDomainLookupByNa if (dom) if ((state == MachineState_Running) || (state == MachineState_Paused) ) - dom->id = i; + dom->id = i + 1; } if (machineName) { @@ -2311,7 +2320,7 @@ static int vboxDomainCreate(virDomainPtr ret = -1; } else { /* all ok set the domid */ - dom->id = i; + dom->id = i + 1; ret = 0; } } -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

3 3

[libvirt] Supporting dynamic bridge names
by Soren Hansen 21 Apr '09

21 Apr '09

I'm fairly sure we've discussed this before, but I couldn't find it in my archives.. A rather long time ago (0.4.0 timeframe, I think) we switched the default network in Ubuntu to use a bridge whose name was defined as "virbr%d". This was done to be able to actually supply a default, enabled network without the risk of interfering with an existing bridge called "virbr0" (ignoring the possible implications of unconditionally using 192.168.122.0/24 (about which, I might add, I've never had /any/ complaints)). Now, since 0.5.0 (or thereabouts, I think), libvirt doesn't support this, which a) makes it rather difficult to achieve our goal of not clashing with existing bridges named "virbr0", and b) causes some amount of grief for updates. To overcome this, I've changed virNetworkAllocateBridge like so: --- libvirt-0.6.1.orig/src/network_conf.c 2009-03-03 09:23:22.000000000 +0100 +++ libvirt-0.6.1/src/network_conf.c 2009-04-16 20:36:43.660996644 +0200 @@ -875,16 +875,20 @@ } char *virNetworkAllocateBridge(virConnectPtr conn, - const virNetworkObjListPtr nets) + const virNetworkObjListPtr nets, + const char *template) { int id = 0; char *newname; + if (!template) + template = "virbr%d"; + do { char try[50]; - snprintf(try, sizeof(try), "virbr%d", id); + snprintf(try, sizeof(try), template, id); if (!virNetworkBridgeInUse(nets, try, NULL)) { if (!(newname = strdup(try))) { --- libvirt-0.6.1.orig/src/network_conf.h 2009-03-03 09:23:22.000000000 +0100 +++ libvirt-0.6.1/src/network_conf.h 2009-04-16 15:36:46.975452201 +0200 @@ -174,7 +174,8 @@ const char *skipname); char *virNetworkAllocateBridge(virConnectPtr conn, - const virNetworkObjListPtr nets); + const virNetworkObjListPtr nets, + const char *template); int virNetworkSetBridgeName(virConnectPtr conn, const virNetworkObjListPtr nets, And virNetworkSetBridgeName like so: --- libvirt-0.6.1.orig/src/network_conf.c 2009-03-03 09:23:22.000000000 +0100 +++ libvirt-0.6.1/src/network_conf.c 2009-04-16 20:36:43.660996644 +0200 @@ -909,7 +913,7 @@ int ret = -1; - if (def->bridge) { + if (def->bridge && !strstr(def->bridge, "%d")) { if (virNetworkBridgeInUse(nets, def->bridge, def->name)) { networkReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, _("bridge name '%s' already in use."), @@ -918,7 +922,7 @@ } } else { /* Allocate a bridge name */ - if (!(def->bridge = virNetworkAllocateBridge(conn, nets))) + if (!(def->bridge = virNetworkAllocateBridge(conn, nets, def->bridge))) goto error; } And finally virNetworkLoadConfig like so: --- libvirt-0.6.1.orig/src/network_conf.c 2009-03-03 09:23:22.000000000 +0100 +++ libvirt-0.6.1/src/network_conf.c 2009-04-16 20:36:43.660996644 +0200 @@ -747,7 +747,7 @@ /* Generate a bridge if none is found, but don't check for collisions * if a bridge is hardcoded, so the network is at least defined */ - if (!def->bridge && !(def->bridge = virNetworkAllocateBridge(conn, nets))) + if (!(def->bridge = virNetworkAllocateBridge(conn, nets, def->bridge))) goto error; if (!(net = virNetworkAssignDef(conn, nets, def))) This is far from perfect, though. a) As used to be the case for the VNC port, "virsh net-dumpxml" will give you /current/ bridge name, so e.g. "virsh net-edit" will cause you to hardcode the bridge name if you're not careful to replace the current name with one that says '%d' somewhere. This can be fixed by e.g. either adding a "template" or "current" attribute on the bridge element in the network XML (depending on whether you want the "name" attribute to be set to the current value or the template value). b) Even if you /do/ remember to put '%d' in place of the assigned number during editing, the bridge number will be increased, because virNetworkBridgeInUse thinks the bridge name is in use. This should be easy to fix, though. I'm perfectly willing to work on this, but I'd like to get you guys' gut feeling on this first. -- Soren Hansen | Lead Virtualisation Engineer | Ubuntu Server Team Canonical Ltd. | http://www.ubuntu.com/

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[libvirt] Dummy tag in xml desc?
by Jean-Michel Guillaume 21 Apr '09

21 Apr '09

Hello Everybody! I'd like to find a way to pass information between a machine & a virtual machine managed by libvirt (like we can with VirtualBox or VMware thanks to guest tools for instance ). I thought that I would have been able to write a comment section or something like that within the xml description of the right domain, but every new comments or xml tags are erased once I save them... Maybe somebody's got an idea to help me :D... JMi

2 1

[Libvirt] Python version
by Christian Weyermann 21 Apr '09

21 Apr '09

Hello everybody, we are doing a project for university where we want to use libvirt. We decided to use the Python bindings. The question is, which python versions are supported by libvirt 0.6.2? We are especially interested in Python 3.0. Thanks and best Regards, Chris

2 1

[libvirt] [RFC] Storage volume clone API
by Cole Robinson 21 Apr '09

21 Apr '09

Hi all, Attached is a stab at an API for cloning a storage volume. This patch implements the command for FS volumes, along with a virsh command 'vol-clone'. This builds on the previously posted 'drop pool lock during volume creation' work. The new API call looks like: /** * virStorageVolClone: * @vol: pointer to storage vol to clone * @xmldesc: description of volume to create * @flags: flags for creation (unused, pass 0) * * Clone a storage volume within the parent pool. * Information for the new volume (name, perms) * are passed via a typical volume XML description * Not all pools support cloning of volumes * * return the storage volume, or NULL on error */ virStorageVolPtr virStorageVolClone(virStorageVolPtr vol, const char *xmldesc, unsigned int flags) The user passes information about the new volume via <volume> XML. Currently we only use the passed name and permissions values, but backingStore info could also be relevant, and 'format' if we allow cloning between image formats. Current limitations: - Parsing the 'clone' xml will complain if the 'capacity' element hasn't been specified, even though it is meaningless for the new volume. Not too sure what the right thing to do here is. - A clone of a raw sparse file will turn out fully allocated. Could probably borrow code from 'cp' to try and get this right. - Doesn't handle backing stores. I think we would need to call out to 'qemu-img convert' to have any chance of getting this right. And if we do that, we could also allow cloning from one image format to another. A lot of the patch is just plumbing, which I will break out into separate patches on the next post. For now, most of the interesting bits are at near the bottom. Feedback appreciated. Thanks, Cole

3 4

[libvirt] Question about the specification of "virsh vcpupin" and "virsh vcpuinfo" in libvirt-0.6.1.
by Takahashi Tomohiro 21 Apr '09

21 Apr '09

Hi, I have questions. I would like to know the specification of "virsh vcpupin" and "virsh vcpuinfo" in libvirt-0.6.1. "virsh vcpupin" and "virsh vcpuinfo" can not be executed to inactive domains. I think it is the specification. Is it correct ? I would like to know whether the libvirt-community have a support plan for pinning inactive domains or not. Because "xm vcpu-pin" and "vcpu-list" can be excuted to inactive domains in Xen3.3. Thanks, Tomohiro Takahashi

3 4

[libvirt] Dummy tag in xml desc?
by Jean-Michel Guillaume 21 Apr '09

21 Apr '09

Hello Everybody! I'd like to find a way to pass information between a machine & a virtual machine managed by libvirt (like we can with VirtualBox or VMware thanks to guest tools for instance ). I thought that I would have been able to write a comment section or something like that within the xml description of the right domain, but every new comments or xml tags are erased once I save them... Maybe somebody's got an idea to help me :D... JMi -- Guillaume Jean-Michel E-Mail : jean-michel.guillaume(a)activeeon.com Phone : + 33 (0)4 97 15 53 84 ACTIVEEON SAS SAS au capital de 75.000 € - RCS de Grasse n° 500 807 284 http://www.activeeon.com 2004, route des Lucioles – B.P.93

1 0

[libvirt] [PATCH 2/4] VirtualBox support
by Pritesh Kothari 21 Apr '09

21 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patches are organized as below: Patch 0/4: contains sample xml file Patch 1/4: contains diff of files already in libvirt. Patch 2/4: contains new files needed for VirtualBox support. Patch 3/4: contains support for host only and internal network. Patch 4/4: contains support for rdp in libvirt as mentioned by danpb (also had sent it separately earlier today) Regards, Pritesh

3 8

[libvirt] Release of libvirt-0.6.2
by Daniel Veillard 21 Apr '09

21 Apr '09

Trying to keep up with last week posted schedule, the new release was pushed to the usual place: ftp://libvirt.org/libvirt/ This is mostly a bug fix release, though it also includes a few new features and some improvements: * New features: - support SASL auth for VNC server (Daniel Berrange) - memory ballooning in QEMU (Daniel Berrange) - SCSI HBA storage pool support (Dave Allan) - PCI passthrough in Xen driver (Daniel Berrange) * Portability: - be more flexible in QEmu binaries paths (Daniel Berrange) - Mingw portability fixes (Daniel Berrange) * Documentation: - add security attributes in RNG schemas - cleanup of architecture docs - missing disk bus values in RNG schemas * Bug fixes: - tap vs vbd type on block detach (Cole Robinson and Takahashi Tomohiro) - bad free on storage volume error (Daniel Berrange) - maplenght computations in remote driver (Daniel Berrange) - event dispatching in the daemon (Daniel Berrange) - virDomainSetVcpus deadlock (Daniel Berrange) - save deadlock in test driver (Cole Robinson) - fix timing of security driver init (Cole Robinson) - forbid readonly connections from dumping the XML safe info (Cole Robinson) - file descriptor leak on remote access - fix labelling of shared/readonly devices (Dan Walsh) - virsh missing auth on shell commands (Matthias Bolte) - avoid zombie on exec pipe errors (Ryota Ozaki) - memory leak in virNodeDeviceGetParent (Daniel Berrange) - URI check in migration (Daniel Berrange) - various memory bug fixes (Daniel Berrange) - python bindings generator fix (Daniel Berrange) - NUMA memory fixes (Daniel Berrange) - various svirt fixes (Daniel Berrange) - fix sparse volume allocation reporting (Cole Robinson) - test driver domain restore return value (Cole Robinson) - do not lose file format info on volume refresh (Cole Robinson) * Improvements: - get CPU usage info for LXC (Ryota Ozaki) - fix domain RNG to add ac97 and tests (Pritesh Kothari) - OpenVZ support for non-template filesystem root (Florian Vichot) - improve arch capabilities generation (Daniel Berrange) - modularization of spec file (Ryota Ozaki) - better error reports in SEXPR generation (Daniel Berrange) - support for vifname parameter in VIF config (Daniel Berrange) - localtime handling for new xen (Daniel Berrange) - error reporting/ verification of security labels (Dan Walsh) - add --console arg for create and start virsh commands (Daniel Berrange) - refresh volume alloc/capacity when dumping XML (Cole Robinson) * Cleanups: - FILE * leaks removal - unused parameters flagging (Maximilian Wilhelm) - switch to pre-C99 struct initialization for drivers (Chris Lalancette) - symlinks resolving cleanup (Daniel Berrange) Thanks to everybody who helped with reports, ideas or patches ! Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

2 4

[libvirt] F10: how to save snapshot back to image?
by Gerry Reno 21 Apr '09

21 Apr '09

In Fedora 10 I've managed to get libvirt to call the emulator with custom arguments so I can invoke -snapshot. I just replaced the emulator in /usr/bin with my own script which adds the argument and then calls the original emulator. This works fine. And the snapshot works fine. I can make lots of changes and when I shutdown and restart then all the changes are forgotten. Now after I'm satisfied with some changes I want to save the snapshot back to the image file. I've tried "Ctrl-Alt-s", but this does not work. I tried finding the QEMU console, but Serial Console is grayed out in the menu. I don't know if that would help anyway since this was a raw image and not qcow2 so I don't think 'savevm' and 'loadvm' would work with raw. Can someone tell me how to save these snapshots back to the image file? Thanks. Regards, Gerry

3 3

[libvirt] PATCH: Allow LXC to use private /dev/pts instance
by Daniel P. Berrange 20 Apr '09

20 Apr '09

One of the current flaws in the LXC driver is that when doing the better- chroot-than-chroot mode setup, /dev/pts leaks the parent OS TTYs into the container. As of 2.6.29 it is possible to create new instances of /dev/pts by passing the 'newinstance' flag to mount. In this way /dev/pts inside the container will be totally independant of the parent OS. This is a kind of fun / tricky thing to get right, because the monitor process (libvirt_lxc) actually needs 2 ttys, one in the host's /dev/pts (which virsh console connects to), and the other in the container's /dev/pts (which acts as its stdin/out/err). This means that libvirt_lxc has to mount the new devpts instance on the containers root filesystem before starting the container itself. To avoid this then appearing in the host OS, we make libvirt_lxc call unshare(CLONE_NEWNS). This also has the nice advantage of adding a guarentee that this new devpts instance is cleaned up with libvirt_lxc exits. Now in the container startup sequence, instead of mounting a devpts instance, it just moves the instance that libvirt_lxc previously setup into its desired location. I have arranged this so that if the host OS kernel lacks support for the 'newinstance' flag with devpts, it'll just use a regular shared instance. If this happens, then /var/log/libvirt/lxc/$NAME.log should warn you 16:55:00.454: warning : kernel does not support private devpts, using shared devpts Also the previous patch to pivot_root() setup added a chroot() call. For some wierd reason, with this all the host OS's mounts are still visible in the container's /proc/mounts, even though they are not actually accessible (since we pivot'd onto a new root) This change seemed to fix that problem with no ill-effects. - if (chroot(oldroot) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to chroot into tmpfs")); - goto err; - } - - if (chdir("/new") < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to chdir into /new on tmpfs")); + if (chdir(newroot) < 0) { + virReportSystemError(NULL, errno, + _("failed to chroot into %s"), newroot); goto err; } There was also a call added to umount the .oldroot location, but this was being done too early, because later methods still needed to access various bits under /.oldroot - eg to mount other (non-root) filesystems from the host OS in the container. So I'm removing this chunk: if (chdir("/") < 0) goto err; - if (umount2(".oldroot", MNT_DETACH) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to lazily unmount old root")); - goto err; - } - This showed up a different problem though. Our call later on which would unmount /.oldroot was failing because there were some open file descriptors on /var/ still. This was because we didn't setup stdin/out until after we'd dealt with all the mounts. So my patch also makes sure that the first thing we do is close all open file descriptors and move stdin/out/err immdiately onto the TTY allocated for this container. That ensures all the mounts are able to be released. I've tested this patch on 2.6.27 (lacking 'newinstance') and on 2.6.29 (with 'newinstance' for devpts). It seemed to work correctly in both cases, but would appreciate someone else confirming.... domain_conf.c | 15 ++++ domain_conf.h | 2 libvirt_private.syms | 1 lxc_container.c | 175 +++++++++++++++++++++++++++++++-------------------- lxc_container.h | 1 lxc_controller.c | 87 +++++++++++++++++++++++-- util.c | 22 ++++-- util.h | 4 + 8 files changed, 230 insertions(+), 77 deletions(-) Daniel Index: src/domain_conf.c =================================================================== RCS file: /data/cvs/libvirt/src/domain_conf.c,v retrieving revision 1.75 diff -u -p -r1.75 domain_conf.c --- src/domain_conf.c 3 Apr 2009 14:10:17 -0000 1.75 +++ src/domain_conf.c 15 Apr 2009 15:44:52 -0000 @@ -3855,6 +3857,21 @@ const char *virDomainDefDefaultEmulator( return emulator; } +virDomainFSDefPtr virDomainGetRootFilesystem(virDomainDefPtr def) +{ + int i; + + for (i = 0 ; i < def->nfss ; i++) { + if (def->fss[i]->type != VIR_DOMAIN_FS_TYPE_MOUNT) + continue; + + if (STREQ(def->fss[i]->dst, "/")) + return def->fss[i]; + } + + return NULL; +} + void virDomainObjLock(virDomainObjPtr obj) { Index: src/domain_conf.h =================================================================== RCS file: /data/cvs/libvirt/src/domain_conf.h,v retrieving revision 1.40 diff -u -p -r1.40 domain_conf.h --- src/domain_conf.h 3 Mar 2009 16:53:13 -0000 1.40 +++ src/domain_conf.h 15 Apr 2009 15:44:52 -0000 @@ -635,6 +635,8 @@ const char *virDomainDefDefaultEmulator( virDomainDefPtr def, virCapsPtr caps); +virDomainFSDefPtr virDomainGetRootFilesystem(virDomainDefPtr def); + void virDomainObjLock(virDomainObjPtr obj); void virDomainObjUnlock(virDomainObjPtr obj); Index: src/libvirt_private.syms =================================================================== RCS file: /data/cvs/libvirt/src/libvirt_private.syms,v retrieving revision 1.28 diff -u -p -r1.28 libvirt_private.syms --- src/libvirt_private.syms 3 Apr 2009 10:55:51 -0000 1.28 +++ src/libvirt_private.syms 15 Apr 2009 15:44:52 -0000 @@ -78,6 +78,7 @@ virDomainDiskQSort; virDomainFindByID; virDomainFindByName; virDomainFindByUUID; +virDomainGetRootFilesystem; virDomainGraphicsTypeFromString; virDomainGraphicsDefFree; virDomainInputDefFree; Index: src/lxc_container.c =================================================================== RCS file: /data/cvs/libvirt/src/lxc_container.c,v retrieving revision 1.23 diff -u -p -r1.23 lxc_container.c --- src/lxc_container.c 14 Apr 2009 17:51:12 -0000 1.23 +++ src/lxc_container.c 15 Apr 2009 15:44:52 -0000 @@ -306,13 +306,13 @@ static int lxcContainerPivotRoot(virDoma /* Create a tmpfs root since old and new roots must be * on separate filesystems */ - if (mount("", oldroot, "tmpfs", 0, NULL) < 0) { + if (mount("tmprootfs", oldroot, "tmpfs", 0, NULL) < 0) { virReportSystemError(NULL, errno, _("failed to mount empty tmpfs at %s"), oldroot); goto err; } - + /* Create a directory called 'new' in tmpfs */ if (virAsprintf(&newroot, "%s/new", oldroot) < 0) { virReportOOMError(NULL); @@ -336,15 +336,9 @@ static int lxcContainerPivotRoot(virDoma /* Now we chroot into the tmpfs, then pivot into the * root->src bind-mounted onto '/new' */ - if (chroot(oldroot) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to chroot into tmpfs")); - goto err; - } - - if (chdir("/new") < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to chdir into /new on tmpfs")); + if (chdir(newroot) < 0) { + virReportSystemError(NULL, errno, + _("failed to chroot into %s"), newroot); goto err; } @@ -360,12 +354,6 @@ static int lxcContainerPivotRoot(virDoma if (chdir("/") < 0) goto err; - if (umount2(".oldroot", MNT_DETACH) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to lazily unmount old root")); - goto err; - } - VIR_FREE(oldroot); VIR_FREE(newroot); @@ -377,50 +365,77 @@ err: return -1; } -static int lxcContainerPopulateDevices(void) + +static int lxcContainerMountBasicFS(virDomainFSDefPtr root) { - int i; - int rc; const struct { - int maj; - int min; - mode_t mode; - const char *path; - } devs[] = { - { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_NULL, 0666, "/dev/null" }, - { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_ZERO, 0666, "/dev/zero" }, - { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_FULL, 0666, "/dev/full" }, - { LXC_DEV_MAJ_TTY, LXC_DEV_MIN_CONSOLE, 0600, "/dev/console" }, - { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_RANDOM, 0666, "/dev/random" }, - { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_URANDOM, 0666, "/dev/urandom" }, + const char *src; + const char *dst; + const char *type; + } mnts[] = { + { "/dev", "/dev", "tmpfs" }, + { "/proc", "/proc", "proc" }, + { "/sys", "/sys", "sysfs" }, +#if WITH_SELINUX + { "none", "/selinux", "selinuxfs" }, +#endif }; + int i, rc; + char *devpts; - if ((rc = virFileMakePath("/dev")) < 0) { - virReportSystemError(NULL, rc, "%s", - _("cannot create /dev/")); + if (virAsprintf(&devpts, "/.oldroot%s/dev/pts", root->src) < 0) { + virReportOOMError(NULL); return -1; } - if (mount("none", "/dev", "tmpfs", 0, NULL) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to mount /dev tmpfs")); - return -1; + + for (i = 0 ; i < ARRAY_CARDINALITY(mnts) ; i++) { + if (virFileMakePath(mnts[i].dst) < 0) { + virReportSystemError(NULL, errno, + _("failed to mkdir %s"), + mnts[i].src); + return -1; + } + if (mount(mnts[i].src, mnts[i].dst, mnts[i].type, 0, NULL) < 0) { + virReportSystemError(NULL, errno, + _("failed to mount %s on %s"), + mnts[i].type, mnts[i].type); + return -1; + } } - /* Move old devpts into container, since we have to - connect to the master ptmx which was opened in - the parent. - XXX This sucks, we need to figure out how to get our - own private devpts for isolation - */ + if ((rc = virFileMakePath("/dev/pts") < 0)) { virReportSystemError(NULL, rc, "%s", _("cannot create /dev/pts")); return -1; } - if (mount("devpts", "/dev/pts", "devpts", 0, NULL) < 0) { + + VIR_DEBUG("Trying to move %s to %s", devpts, "/dev/pts"); + if ((rc = mount(devpts, "/dev/pts", NULL, MS_MOVE, NULL)) < 0) { virReportSystemError(NULL, errno, "%s", _("failed to mount /dev/pts in container")); return -1; } + VIR_FREE(devpts); + + return 0; +} + +static int lxcContainerPopulateDevices(void) +{ + int i; + const struct { + int maj; + int min; + mode_t mode; + const char *path; + } devs[] = { + { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_NULL, 0666, "/dev/null" }, + { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_ZERO, 0666, "/dev/zero" }, + { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_FULL, 0666, "/dev/full" }, + { LXC_DEV_MAJ_TTY, LXC_DEV_MIN_CONSOLE, 0600, "/dev/console" }, + { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_RANDOM, 0666, "/dev/random" }, + { LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_URANDOM, 0666, "/dev/urandom" }, + }; /* Populate /dev/ with a few important bits */ for (i = 0 ; i < ARRAY_CARDINALITY(devs) ; i++) { @@ -434,6 +449,23 @@ static int lxcContainerPopulateDevices(v } } + if (access("/dev/pts/ptmx", W_OK) == 0) { + if (symlink("/dev/pts/ptmx", "/dev/ptmx") < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to create symlink /dev/ptmx to /dev/pts/ptmx")); + return -1; + } + } else { + dev_t dev = makedev(LXC_DEV_MAJ_TTY, LXC_DEV_MIN_PTMX); + if (mknod("/dev/ptmx", 0, dev) < 0 || + chmod("/dev/ptmx", 0666)) { + virReportSystemError(NULL, errno, "%s", + _("failed to make device /dev/ptmx")); + return -1; + } + } + + return 0; } @@ -493,6 +525,7 @@ static int lxcContainerUnmountOldFS(void return -1; } while (getmntent_r(procmnt, &mntent, mntbuf, sizeof(mntbuf)) != NULL) { + VIR_DEBUG("Got %s", mntent.mnt_dir); if (!STRPREFIX(mntent.mnt_dir, "/.oldroot")) continue; @@ -513,6 +546,7 @@ static int lxcContainerUnmountOldFS(void lxcContainerChildMountSort); for (i = 0 ; i < nmounts ; i++) { + VIR_DEBUG("Umount %s", mounts[i]); if (umount(mounts[i]) < 0) { virReportSystemError(NULL, errno, _("failed to unmount '%s'"), @@ -534,22 +568,23 @@ static int lxcContainerUnmountOldFS(void static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef, virDomainFSDefPtr root) { + /* Gives us a private root, leaving all parent OS mounts on /.oldroot */ if (lxcContainerPivotRoot(root) < 0) return -1; - if (virFileMakePath("/proc") < 0 || - mount("none", "/proc", "proc", 0, NULL) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to mount /proc")); + /* Mounts the core /proc, /sys, /dev, /dev/pts filesystems */ + if (lxcContainerMountBasicFS(root) < 0) return -1; - } + /* Populates device nodes in /dev/ */ if (lxcContainerPopulateDevices() < 0) return -1; + /* Sets up any non-root mounts from guest config */ if (lxcContainerMountNewFS(vmDef) < 0) return -1; + /* Gets rid of all remaining mounts from host OS, including /.oldroot itself */ if (lxcContainerUnmountOldFS() < 0) return -1; @@ -595,18 +630,9 @@ static int lxcContainerSetupExtraMounts( return 0; } -static int lxcContainerSetupMounts(virDomainDefPtr vmDef) +static int lxcContainerSetupMounts(virDomainDefPtr vmDef, + virDomainFSDefPtr root) { - int i; - virDomainFSDefPtr root = NULL; - - for (i = 0 ; i < vmDef->nfss ; i++) { - if (vmDef->fss[i]->type != VIR_DOMAIN_FS_TYPE_MOUNT) - continue; - if (STREQ(vmDef->fss[i]->dst, "/")) - root = vmDef->fss[i]; - } - if (root) return lxcContainerSetupPivotRoot(vmDef, root); else @@ -630,6 +656,8 @@ static int lxcContainerChild( void *data lxc_child_argv_t *argv = data; virDomainDefPtr vmDef = argv->config; int ttyfd; + char *ttyPath; + virDomainFSDefPtr root; if (NULL == vmDef) { lxcError(NULL, NULL, VIR_ERR_INTERNAL_ERROR, @@ -637,16 +665,28 @@ static int lxcContainerChild( void *data return -1; } - if (lxcContainerSetupMounts(vmDef) < 0) - return -1; + root = virDomainGetRootFilesystem(vmDef); - ttyfd = open(argv->ttyPath, O_RDWR|O_NOCTTY); + if (root) { + if (virAsprintf(&ttyPath, "%s%s", root->src, argv->ttyPath) < 0) { + virReportOOMError(NULL); + return -1; + } + } else { + if (!(ttyPath = strdup(argv->ttyPath))) { + virReportOOMError(NULL); + return -1; + } + } + + ttyfd = open(ttyPath, O_RDWR|O_NOCTTY); if (ttyfd < 0) { virReportSystemError(NULL, errno, - _("failed to open %s"), - argv->ttyPath); + _("failed to open tty %s"), + ttyPath); return -1; } + VIR_FREE(ttyPath); if (lxcContainerSetStdio(argv->monitor, ttyfd) < 0) { close(ttyfd); @@ -654,6 +694,9 @@ static int lxcContainerChild( void *data } close(ttyfd); + if (lxcContainerSetupMounts(vmDef, root) < 0) + return -1; + /* Wait for interface devices to show up */ if (lxcContainerWaitForContinue(argv->monitor) < 0) return -1; Index: src/lxc_container.h =================================================================== RCS file: /data/cvs/libvirt/src/lxc_container.h,v retrieving revision 1.9 diff -u -p -r1.9 lxc_container.h --- src/lxc_container.h 21 Oct 2008 16:46:47 -0000 1.9 +++ src/lxc_container.h 15 Apr 2009 15:44:52 -0000 @@ -39,6 +39,7 @@ enum { #define LXC_DEV_MAJ_TTY 5 #define LXC_DEV_MIN_CONSOLE 1 +#define LXC_DEV_MIN_PTMX 2 #define LXC_DEV_MAJ_PTY 136 Index: src/lxc_controller.c =================================================================== RCS file: /data/cvs/libvirt/src/lxc_controller.c,v retrieving revision 1.15 diff -u -p -r1.15 lxc_controller.c --- src/lxc_controller.c 3 Feb 2009 13:09:00 -0000 1.15 +++ src/lxc_controller.c 15 Apr 2009 15:44:52 -0000 @@ -33,6 +33,7 @@ #include <fcntl.h> #include <signal.h> #include <getopt.h> +#include <sys/mount.h> #include "virterror_internal.h" #include "logging.h" @@ -440,6 +441,9 @@ lxcControllerRun(virDomainDefPtr def, int containerPty; char *containerPtyPath; pid_t container = -1; + virDomainFSDefPtr root; + char *devpts = NULL; + char *devptmx = NULL; if (socketpair(PF_UNIX, SOCK_STREAM, 0, control) < 0) { virReportSystemError(NULL, errno, "%s", @@ -447,14 +451,83 @@ lxcControllerRun(virDomainDefPtr def, goto cleanup; } - if (virFileOpenTty(&containerPty, - &containerPtyPath, - 0) < 0) { - virReportSystemError(NULL, errno, "%s", - _("failed to allocate tty")); - goto cleanup; + root = virDomainGetRootFilesystem(def); + + /* + * If doing a chroot style setup, we need to prepare + * a private /dev/pts for the child now, which they + * will later move into position. + * + * This is complex because 'virsh console' needs to + * use /dev/pts from the host OS, and the guest OS + * needs to use /dev/pts from the guest. + * + * This means that we (libvirt_lxc) need to see and + * use both /dev/pts instances. We're running in the + * host OS context though and don't want to expose + * the guest OS /dev/pts there. + * + * Thus we call unshare(CLONE_NS) so that we can see + * the guest's new /dev/pts, without it becoming + * visible to the host OS. + */ + if (root) { + VIR_DEBUG0("Setting up private /dev/pts"); + if (unshare(CLONE_NEWNS) < 0) { + virReportSystemError(NULL, errno, "%s", + _("cannot unshare mount namespace")); + goto cleanup; + } + + if (virAsprintf(&devpts, "%s/dev/pts", root->src) < 0 || + virAsprintf(&devptmx, "%s/dev/pts/ptmx", root->src) < 0) { + virReportOOMError(NULL); + goto cleanup; + } + + if (virFileMakePath(devpts) < 0) { + virReportSystemError(NULL, errno, + _("failed to make path %s"), + devpts); + goto cleanup; + } + + VIR_DEBUG("Mouting 'devpts' on %s", devpts); + if (mount("devpts", devpts, "devpts", 0, "newinstance,ptmxmode=0666") < 0) { + virReportSystemError(NULL, errno, + _("failed to mount devpts on %s"), + devpts); + goto cleanup; + } + + if (access(devptmx, R_OK) < 0) { + VIR_WARN0("kernel does not support private devpts, using shared devpts"); + VIR_FREE(devptmx); + } } + if (devptmx) { + VIR_DEBUG("Opening tty on private %s", devptmx); + if (virFileOpenTtyAt(devptmx, + &containerPty, + &containerPtyPath, + 0) < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to allocate tty")); + goto cleanup; + } + } else { + VIR_DEBUG0("Opening tty on shared /dev/ptmx"); + if (virFileOpenTty(&containerPty, + &containerPtyPath, + 0) < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to allocate tty")); + goto cleanup; + } + } + + if (lxcSetContainerResources(def) < 0) goto cleanup; @@ -476,6 +549,8 @@ lxcControllerRun(virDomainDefPtr def, rc = lxcControllerMain(monitor, client, appPty, containerPty); cleanup: + VIR_FREE(devptmx); + VIR_FREE(devpts); if (control[0] != -1) close(control[0]); if (control[1] != -1) Index: src/util.c =================================================================== RCS file: /data/cvs/libvirt/src/util.c,v retrieving revision 1.99 diff -u -p -r1.99 util.c --- src/util.c 2 Apr 2009 18:42:33 -0000 1.99 +++ src/util.c 15 Apr 2009 15:44:52 -0000 @@ -1050,14 +1050,25 @@ int virFileBuildPath(const char *dir, } -#ifdef __linux__ int virFileOpenTty(int *ttymaster, char **ttyName, int rawmode) { + return virFileOpenTtyAt("/dev/ptmx", + ttymaster, + ttyName, + rawmode); +} + +#ifdef __linux__ +int virFileOpenTtyAt(const char *ptmx, + int *ttymaster, + char **ttyName, + int rawmode) +{ int rc = -1; - if ((*ttymaster = posix_openpt(O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0) + if ((*ttymaster = open(ptmx, O_RDWR|O_NOCTTY|O_NONBLOCK)) < 0) goto cleanup; if (unlockpt(*ttymaster) < 0) @@ -1100,9 +1111,10 @@ cleanup: } #else -int virFileOpenTty(int *ttymaster ATTRIBUTE_UNUSED, - char **ttyName ATTRIBUTE_UNUSED, - int rawmode ATTRIBUTE_UNUSED) +int virFileOpenTtyAt(const char *ptmx ATTRIBUTE_UNUSED, + int *ttymaster ATTRIBUTE_UNUSED, + char **ttyName ATTRIBUTE_UNUSED, + int rawmode ATTRIBUTE_UNUSED) { return -1; } Index: src/util.h =================================================================== RCS file: /data/cvs/libvirt/src/util.h,v retrieving revision 1.46 diff -u -p -r1.46 util.h --- src/util.h 1 Apr 2009 10:26:22 -0000 1.46 +++ src/util.h 15 Apr 2009 15:44:52 -0000 @@ -103,6 +103,10 @@ int virFileBuildPath(const char *dir, int virFileOpenTty(int *ttymaster, char **ttyName, int rawmode); +int virFileOpenTtyAt(const char *ptmx, + int *ttymaster, + char **ttyName, + int rawmode); char* virFilePid(const char *dir, const char *name); -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 5

[libvirt] PATCH: Add a tool virt-xml-validate
by Daniel P. Berrange 20 Apr '09

20 Apr '09

While we install our RNG schemas into the filesystem, and users could use xmllint to validate them, it is a little tedious to use this way. This patch adds a nice simple command virt-xml-validate XML-FILE [SCHEMA-NAME] You can use it on any XML file format that libvirt knows about # virt-xml-validate ~/rhel5xen.xml /home/berrange/rhel5xen.xml validates #$ echo $? 0 I normally figures out the SCHEMA-NAME from the top level element name, but you can override it if desired # virt-xml-validate ~/bug.xml virt-xml-validate: cannot determine schema type for /home/berrange/bug.xml # virt-xml-validate ~/bug.xml domain /home/berrange/bug.txt:1: parser error : Start tag expected, '<' not found From bugzilla(a)redhat.com Fri Feb 27 01:12:11 2009 ^ I've included a man page in the command. This patch also fixes numerous bugs in the virsh man page source The 'src/' directory is getting over large, so I decided we should have a separate 'tools' directory for command line programs included in the main libvirt source. We could consider moving virsh here perhaps. .hgignore | 12 ++ Makefile.am | 2 b/tools/.cvsignore | 4 b/tools/.gitignore | 4 b/tools/Makefile.am | 14 ++ b/tools/virt-xml-validate.in | 151 ++++++++++++++++++++++++++ configure.in | 1 docs/Makefile.am | 2 docs/virsh.pod | 80 ++++++++++++-- libvirt.spec.in | 4 virsh.1 | 241 ++++++++++++++++++++++++++----------------- 11 files changed, 408 insertions(+), 107 deletions(-) Daniel diff -r f861822d43db .hgignore --- a/.hgignore Thu Apr 16 10:34:11 2009 +0100 +++ b/.hgignore Thu Apr 16 12:44:17 2009 +0100 @@ -46,12 +46,19 @@ docs/examples/info1 docs/examples/python/Makefile docs/examples/python/Makefile.in docs/examples/suspend +docs/schemas/Makefile +docs/schemas/Makefile.in examples/domain-events/events-c/*.exe examples/domain-events/events-c/.deps examples/domain-events/events-c/.libs examples/domain-events/events-c/Makefile examples/domain-events/events-c/Makefile.in examples/domain-events/events-c/event-test +examples/hellolibvirt/.deps +examples/hellolibvirt/.libs +examples/hellolibvirt/Makefile +examples/hellolibvirt/Makefile.in +examples/hellolibvirt/hellolibvirt gnulib/lib/*.la gnulib/lib/*.lo gnulib/lib/.deps @@ -260,6 +267,7 @@ tests/qemuxml2argvtest tests/qemuxml2xmltest tests/qparamtest tests/reconnect +tests/seclabeltest tests/sexpr2xmldata/Makefile tests/sexpr2xmldata/Makefile.in tests/sexpr2xmltest @@ -274,4 +282,8 @@ tests/xmconfigtest tests/xml2sexprdata/Makefile tests/xml2sexprdata/Makefile.in tests/xml2sexprtest +tools/Makefile +tools/Makefile.in +tools/virt-xml-validate +tools/virt-xml-validate.1 update.log diff -r f861822d43db Makefile.am --- a/Makefile.am Thu Apr 16 10:34:11 2009 +0100 +++ b/Makefile.am Thu Apr 16 12:44:17 2009 +0100 @@ -3,7 +3,7 @@ LCOV = lcov GENHTML = genhtml -SUBDIRS = gnulib/lib include src qemud proxy docs gnulib/tests \ +SUBDIRS = gnulib/lib include src qemud tools proxy docs gnulib/tests \ python tests po examples/domain-events/events-c examples/hellolibvirt ACLOCAL_AMFLAGS = -I m4 -I gnulib/m4 diff -r f861822d43db configure.in --- a/configure.in Thu Apr 16 10:34:11 2009 +0100 +++ b/configure.in Thu Apr 16 12:44:17 2009 +0100 @@ -1342,6 +1342,7 @@ AC_OUTPUT(Makefile src/Makefile include/ include/libvirt/Makefile include/libvirt/libvirt.h \ python/Makefile python/tests/Makefile \ qemud/Makefile \ + tools/Makefile \ tests/Makefile proxy/Makefile \ tests/xml2sexprdata/Makefile \ tests/sexpr2xmldata/Makefile \ diff -r f861822d43db docs/Makefile.am --- a/docs/Makefile.am Thu Apr 16 10:34:11 2009 +0100 +++ b/docs/Makefile.am Thu Apr 16 12:44:17 2009 +0100 @@ -66,7 +66,7 @@ EXTRA_DIST= \ all: web $(top_builddir)/NEWS $(man_MANS) virsh.1: virsh.pod - pod2man -c "Virtualization Support" $(srcdir)/virsh.pod > $@-t + pod2man -c "Virtualization Support" -r "$(PACKAGE)-$(VERSION)" $(srcdir)/virsh.pod > $@-t mv $@-t $@ cp $@ $(top_builddir) diff -r f861822d43db docs/virsh.pod --- a/docs/virsh.pod Thu Apr 16 10:34:11 2009 +0100 +++ b/docs/virsh.pod Thu Apr 16 12:44:17 2009 +0100 @@ -150,13 +150,13 @@ B<virsh> list Name is the name of the domain. ID the domain numeric id. State is the run state (see below). -=over 4 - B<STATES> The State field lists 6 states for a domain, and which ones the current domain is in. +=over 4 + =item B<running> The domain is currently running on a CPU @@ -198,12 +198,16 @@ crashed. Prints the available amount of memory on the machine or within a NUMA cell if I<cellno> is provided. +=back + =head1 DOMAIN COMMANDS The following commands manipulate domains directly, as stated previously most commands take domain-id as the first parameter. The I<domain-id> can be specified as an short integer, a name or a full UUID. +=over 4 + =item B<autostart> optional I<--disable> I<domain-id> Configure a domain to be automatically started at boot. @@ -401,7 +405,9 @@ and I<cpulist> is a comma separated list Output the IP address and port number for the VNC display. If the information is not available the processes will provide an exit code of 1. -=head1 DEVICES COMMANDS +=back + +=head1 DEVICE COMMANDS The following commands manipulate devices associated to domains. The domain-id can be specified as an short integer, a name or a full UUID. @@ -409,6 +415,8 @@ To better understand the values allowed reading the documentation at L<http://libvirt.org/format.html> on the format of the device sections to get the most accurate set of accepted values. +=over 4 + =item B<attach-device> I<domain-id> I<FILE> Attach a device to the domain, using a device definition in an XML file. @@ -449,7 +457,9 @@ I<type> can be either I<network> to indi It is recommended to use the I<mac> option to distinguish between the interfaces if more than one are present on the domain. -=head1 VIRTUAL NETWORKS COMMANDS +=back + +=head1 VIRTUAL NETWORK COMMANDS The following commands manipulate networks. Libvirt has the capability to define virtual networks which can then be used by domains and linked to @@ -458,6 +468,8 @@ see the documentation at L<http://libvir of the command for virtual networks are similar to the one used for domains, but the way to name a virtual network is either by its name or UUID. +=over 4 + =item B<net-autostart> I<network> optional I<--disable> Configure a virtual network to be automatically started at boot. @@ -517,18 +529,55 @@ Undefine the configuration for an inacti Convert a network name to network UUID. +=back + =head1 ENVIRONMENT +The following environment variables can be set to alter the behaviour +of C<virsh> + +=over 4 + =item VIRSH_DEFAULT_CONNECT_URI The hypervisor to connect to by default. Set this to a URI, in the same format as accepted by the B<connect> option. -=head1 SEE ALSO +=item LIBVIRT_DEBUG=LEVEL -L<virt-install(1)>, L<xm(1)>, L<virt-top(1)>, L<virt-mem(1)>, L<virt-df(1)>, L<http://www.libvirt.org/> +Turn on verbose debugging of all libvirt API calls. Valid levels are -=head1 AUTHOR +=over 4 + +=item * LIBVIRT_DEBUG=1 + +Messages at level DEBUG or above + +=item * LIBVIRT_DEBUG=2 + +Messages at level INFO or above + +=item * LIBVIRT_DEBUG=3 + +Messages at level WARNING or above + +=item * LIBVIRT_DEBUG=4 + +Messages at level ERROR or above + +=back + +For further information about debugging options consult C<http://libvirt.org/logging.html> + +=back + +=head1 BUGS + +Report any bugs discovered to the libvirt community via the mailing +list C<http://libvirt.org/contact.html> or bug tracker C<http://libvirt.org/bugs.html>. +Alternatively report bugs to your software distributor / vendor. + +=head1 AUTHORS Andrew Puch <apuch @ redhat.com> Daniel Veillard <veillard @ redhat.com> @@ -537,12 +586,19 @@ L<virt-install(1)>, L<xm(1)>, L<virt-top Sean Dague <sean at dague dot net> Daniel Stekloff <dsteklof at us dot ibm dot com> +=head1 COPYRIGHT -=head1 BUGS +Copyright (C) 2005, 2007-2009 Red Hat, Inc. -Bugs can be filed in Red Hat bugzilla under the Virtualization Tools/libvirt -L<https://bugzilla.redhat.com/> +=head1 LICENSE -L<https://bugzilla.redhat.com/buglist.cgi?product=Virtualization+Tools&compon…> +virsh is distributed under the terms of the GNU LGPL v2+. +This is free software; see the source for copying conditions. There +is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR +PURPOSE -=end +=head1 SEE ALSO + +L<virt-install(1)>, L<virt-xml-validate(1)>, L<virt-top(1)>, L<virt-mem(1)>, L<virt-df(1)>, L<http://www.libvirt.org/> + +=cut diff -r f861822d43db libvirt.spec.in --- a/libvirt.spec.in Thu Apr 16 10:34:11 2009 +0100 +++ b/libvirt.spec.in Thu Apr 16 12:44:17 2009 +0100 @@ -372,8 +372,10 @@ fi %defattr(-, root, root) %doc AUTHORS ChangeLog NEWS README COPYING.LIB TODO -%doc %{_mandir}/man1/virsh.1* +%{_mandir}/man1/virsh.1* +%{_mandir}/man1/virt-xml-validate.1* %{_bindir}/virsh +%{_bindir}/virt-xml-validate %{_libdir}/lib*.so.* %dir %attr(0700, root, root) %{_sysconfdir}/libvirt/ diff -r f861822d43db tools/.cvsignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tools/.cvsignore Thu Apr 16 12:44:17 2009 +0100 @@ -0,0 +1,4 @@ +virt-xml-validate +virt-xml-validate.1 +Makefile +Makefile.in diff -r f861822d43db tools/.gitignore --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tools/.gitignore Thu Apr 16 12:44:17 2009 +0100 @@ -0,0 +1,4 @@ +virt-xml-validate +virt-xml-validate.1 +Makefile +Makefile.in diff -r f861822d43db tools/Makefile.am --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tools/Makefile.am Thu Apr 16 12:44:17 2009 +0100 @@ -0,0 +1,14 @@ + +bin_SCRIPTS = \ + virt-xml-validate + +virt-xml-validate: virt-xml-validate.in Makefile + sed -e 's,@SCHEMADIR@,$(pkgdatadir)/schemas,' < $< > $@ || (rm $@ && exit 1) + chmod +x $@ + +man1_MANS = virt-xml-validate.1 + +CLEANFILES = $(bin_SCRIPTS) $(man1_MANS) + +%.1: % + pod2man -c "Virtualization Support" -r "$(PACKAGE)-$(VERSION)" $< $@ diff -r f861822d43db tools/virt-xml-validate.in --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tools/virt-xml-validate.in Thu Apr 16 12:44:17 2009 +0100 @@ -0,0 +1,151 @@ +#!/bin/sh +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + +set -e + +XMLFILE=$1 +TYPE=$2 + +if [ -z "$XMLFILE" ]; then + echo "syntax: $0 XMLFILE [TYPE]" + exit 1 +fi + +if [ ! -f "$XMLFILE" ]; then + echo "$0: document $XMLFILE does not exist" + exit 2 +fi + +if [ -z "$TYPE" ]; then + ROOT=`xmllint --format $XMLFILE 2>/dev/null| head -2 | tail -1` + case $ROOT in + *domain*) + TYPE="domain" + ;; + *network*) + TYPE="network" + ;; + *pool*) + TYPE="storagepool" + ;; + *volume*) + TYPE="storagevol" + ;; + *capabilities*) + TYPE="capability" + ;; + *device*) + TYPE="nodedev" + ;; + *) + echo "$0: cannot determine schema type for $XMLFILE" + exit 3 + esac +fi + +SCHEMA="@SCHEMADIR@/${TYPE}.rng" + +if [ ! -f "$SCHEMA" ]; then + echo "$0: schema $SCHEMA does not exist" + exit 4 +fi + +xmllint --noout --relaxng $SCHEMA $XMLFILE + +exit 0 + +: <<=cut +=pod + +=head1 NAME + + virt-xml-validate - validate libvirt XML files against a schema + +=head1 SYNOPSIS + + virt-xml-validate XML-FILE [SCHEMA-NAME] + +=head1 DESCRIPTION + +Validates a libvirt XML for compliance with the published schema. +The first compulsory argument is the path to the XML file to be +validated. The optional second argument is the name of the schema +to validate against. If omitted, the schema name will be inferred +from the name of the root element in the XML document. + +Valid schema names currently include + +=over 4 + +=item C<domain> + +The schema for the XML format used by guest domains configuration + +=item C<network> + +The schema for the XML format used by virtual network configuration + +=item C<storagepool> + +The schema for the XML format used by storage pool configuration + +=item C<storagevol> + +The schema for the XML format used by storage volume descriptions + +=item C<nodedev> + +The schema for the XML format used by node device descriptions + +=item C<capability> + +The schema for the XML format used to declare driver capabilities + +=back + +=head1 EXIT STATUS + +Upon successful validation, an exit status of 0 will be set. Upon +failure a non-zero status will be set. + +=head1 AUTHOR + +Daniel P.Berrange + +=head1 BUGS + +Report any bugs discovered to the libvirt community via the +mailing list C<http://libvirt.org/contact.html> or bug tracker C<http://libvirt.org/bugs.html>. +Alternatively report bugs to your software distributor / vendor. + +=head1 COPYRIGHT + +Copyright 2009 by Red Hat, Inc +Copyright 2009 by Daniel P. Berrange + +=head1 LICENSE + +virt-xml-validate is distributed under the terms of the GNU GPL v2+. +This is free software; see the source for copying conditions. There +is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR +PURPOSE + +=head1 SEE ALSO + +C<virsh(1)>, online XML format descriptions C<http://libvirt.org/format.html> + +=cut diff -r f861822d43db virsh.1 --- a/virsh.1 Thu Apr 16 10:34:11 2009 +0100 +++ b/virsh.1 Thu Apr 16 12:44:17 2009 +0100 @@ -1,4 +1,4 @@ -.\" Automatically generated by Pod::Man v1.37, Pod::Parser v1.32 +.\" Automatically generated by Pod::Man 2.16 (Pod::Simple 3.07) .\" .\" Standard preamble: .\" ======================================================================== @@ -25,11 +25,11 @@ .. .\" Set up some character translations and predefined strings. \*(-- will .\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left -.\" double quote, and \*(R" will give a right double quote. | will give a -.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used to -.\" do unbreakable dashes and therefore won't be available. \*(C` and \*(C' -.\" expand to `' in nroff, nothing in troff, for use with C<>. -.tr \(*W-|\(bv\*(Tr +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. Capital omega is used to do unbreakable dashes and +.\" therefore won't be available. \*(C` and \*(C' expand to `' in nroff, +.\" nothing in troff, for use with C<>. +.tr \(*W- .ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' .ie n \{\ . ds -- \(*W- @@ -48,22 +48,25 @@ . ds R" '' 'br\} .\" +.\" Escape single quotes in literal strings from groff's Unicode transform. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" .\" If the F register is turned on, we'll generate index entries on stderr for .\" titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and index .\" entries marked with X<> in POD. Of course, you'll have to process the .\" output yourself in some meaningful fashion. -.if \nF \{\ +.ie \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . nr % 0 . rr F .\} -.\" -.\" For nroff, turn off justification. Always turn off hyphenation; it makes -.\" way too many mistakes in technical documents. -.hy 0 -.if n .na +.el \{\ +. de IX +.. +.\} .\" .\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). .\" Fear. Run. Save yourself. No user-serviceable parts. @@ -129,7 +132,11 @@ .\" ======================================================================== .\" .IX Title "VIRSH 1" -.TH VIRSH 1 "2008-04-15" "perl v5.8.8" "Virtualization Support" +.TH VIRSH 1 "2009-04-16" "libvirt-0.6.2" "Virtualization Support" +.\" For nroff, turn off justification. Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh .SH "NAME" virsh \- management user interface .SH "SYNOPSIS" @@ -144,7 +151,7 @@ domains. It can also be used to list cur The basic structure of most virsh usage is: .PP .Vb 1 -\& virsh <command> <domain-id> [OPTIONS] +\& virsh <command> <domain\-id> [OPTIONS] .Ve .PP Where \fIcommand\fR is one of the commands listed below, \fIdomain-id\fR @@ -222,7 +229,7 @@ this is used to connect to the local Xen allow to connect locally as root to the daemon supervising QEmu and \s-1KVM\s0 domains .IP "qemu:///session" 4 .IX Item "qemu:///session" -allow to connect locally as a normal user to the his own set of QEmu and \s-1KVM\s0 domains +allow to connect locally as a normal user to his own set of QEmu and \s-1KVM\s0 domains .RE .RS 4 .Sp @@ -261,54 +268,53 @@ An example format for the list is as fol \&\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\-\- .Sp .Vb 2 -\& 0 Domain-0 running +\& 0 Domain\-0 running \& 2 fedora paused .Ve .Sp Name is the name of the domain. \s-1ID\s0 the domain numeric id. - State is the run state (see below). +State is the run state (see below). +.Sp +\&\fB\s-1STATES\s0\fR +.Sp +The State field lists 6 states for a domain, and which ones the +current domain is in. +.RS 4 +.IP "\fBrunning\fR" 4 +.IX Item "running" +The domain is currently running on a \s-1CPU\s0 +.IP "\fBidle\fR" 4 +.IX Item "idle" +The domain is idle, and not running or runnable. This can be caused +because the domain is waiting on \s-1IO\s0 (a traditional wait state) or has +gone to sleep because there was nothing else for it to do. +.IP "\fBpaused\fR" 4 +.IX Item "paused" +The domain has been paused, usually occurring through the administrator +running \fBvirsh suspend\fR. When in a paused state the domain will still +consume allocated resources like memory, but will not be eligible for +scheduling by the hypervisor. +.IP "\fBshutdown\fR" 4 +.IX Item "shutdown" +The domain is in the process of shutting down, i.e. the guest operating system +has been notified and should be in the process of stopping its operations +gracefully. +.IP "\fBcrashed\fR" 4 +.IX Item "crashed" +The domain has crashed, which is always a violent ending. Usually +this state can only occur if the domain has been configured not to +restart on crash. +.IP "\fBdying\fR" 4 +.IX Item "dying" +The domain is in process of dying, but hasn't completely shutdown or +crashed. +.RE +.RS 4 +.RE .IP "\fBfreecell\fR optional \fIcellno\fR" 4 .IX Item "freecell optional cellno" Prints the available amount of memory on the machine or within a \&\s-1NUMA\s0 cell if \fIcellno\fR is provided. -.RS 4 -.Sp -.RS 4 -\&\fB\s-1STATES\s0\fR -.Sp -The State field lists 6 states for a Xen Domain, and which ones the -current Domain is in. -.RE -.IP "\fBr \- running\fR" 4 -.IX Item "r - running" -The domain is currently running on a \s-1CPU\s0 -.IP "\fBb \- blocked\fR" 4 -.IX Item "b - blocked" -The domain is blocked, and not running or runnable. This can be caused -because the domain is waiting on \s-1IO\s0 (a traditional wait state) or has -gone to sleep because there was nothing else for it to do. -.IP "\fBp \- paused\fR" 4 -.IX Item "p - paused" -The domain has been paused, usually occurring through the administrator -running \fBxm pause\fR. When in a paused state the domain will still -consume allocated resources like memory, but will not be eligible for -scheduling by the Xen hypervisor. -.IP "\fBs \- shutdown\fR" 4 -.IX Item "s - shutdown" -The domain is in the process of shutting down, i.e. the guest operating system -has been notified and should be in the process of stopping its operations -gracefully. -.IP "\fBc \- crashed\fR" 4 -.IX Item "c - crashed" -The domain has crashed, which is always a violent ending. Usually -this state can only occur if the domain has been configured not to -restart on crash. See xmdomain.cfg for more info. -.IP "\fBd \- dying\fR" 4 -.IX Item "d - dying" -The domain is in process of dying, but hasn't completely shutdown or -crashed. -.RE -.RS 4 .SH "DOMAIN COMMANDS" .IX Header "DOMAIN COMMANDS" The following commands manipulate domains directly, as stated @@ -324,7 +330,7 @@ The option \fI\-\-disable\fR disable aut Connect the virtual serial console for the guest. .IP "\fBcreate\fR \fI\s-1FILE\s0\fR" 4 .IX Item "create FILE" -Create a domain from an \s-1XML\s0 <file> an easy way to create one if you have a pre-existing xen guest created via \fBxm\fR create <\s-1XMLFILE\s0>. +Create a domain from an \s-1XML\s0 <file>. An easy way to create the \s-1XML\s0 <file> is to use the \fBdumpxml\fR command to obtain the definition of a pre-existing guest. .Sp \&\fBExample\fR .Sp @@ -335,7 +341,7 @@ Define a domain from an \s-1XML\s0 <file but not started. .IP "\fBdestroy\fR \fIdomain-id\fR" 4 .IX Item "destroy domain-id" -Immediately terminate the domain domain\-id. This doesn't give the domain +Immediately terminate the domain domain-id. This doesn't give the domain \&\s-1OS\s0 any chance to react, and it the equivalent of ripping the power cord out on a physical machine. In most cases you will want to use the \fBshutdown\fR command instead. @@ -369,6 +375,18 @@ Dumps the core of a domain to a file for .IP "\fBdumpxml\fR \fIdomain-id\fR" 4 .IX Item "dumpxml domain-id" Output the domain information as an \s-1XML\s0 dump to stdout, this format can be used by the \fBcreate\fR command. +.IP "\fBedit\fR \fIdomain-id\fR" 4 +.IX Item "edit domain-id" +Edit the \s-1XML\s0 configuration file for a domain. +.Sp +This is equivalent to: + virsh dumpxml domain > domain.xml + edit domain.xml + virsh define domain.xml +except that it does some error checking. +.Sp +The editor used can be supplied by the \f(CW$EDITOR\fR environment +variable, or if that is not defined defaults to \f(CW\*(C`vi\*(C'\fR. .IP "\fBmigrate\fR optional \fI\-\-live\fR \fIdomain-id\fR \fIdesturi\fR \fImigrateuri\fR" 4 .IX Item "migrate optional --live domain-id desturi migrateuri" Migrate domain to another host. Add \-\-live for live migration. The \fIdesturi\fR @@ -381,9 +399,8 @@ command run from the console. The comma executed the reboot action, which may be significantly before the domain actually reboots. .Sp -For xen vm the behavior of what happens to a domain when it reboots is set by the -\&\fIon_reboot\fR parameter of the xmdomain.cfg file when the domain was -created. +The exact behavior of a domain when it reboots is set by the +\&\fIon_reboot\fR parameter in the domain's \s-1XML\s0 definition. .IP "\fBrestore\fR \fIstate-file\fR" 4 .IX Item "restore state-file" Restores a domain from an \fBvirsh save\fR state file. See \fIsave\fR for more info. @@ -397,12 +414,16 @@ other domains to use. \fBvirsh restore\ This is roughly equivalent to doing a hibernate on a running computer, with all the same limitations. Open network connections may be severed upon restore, as \s-1TCP\s0 timeouts may have expired. +.IP "\fBschedinfo\fR optional \fI\-\-set\fR \fBparameter=value\fR \fIdomain-id\fR" 4 +.IX Item "schedinfo optional --set parameter=value domain-id" +.PD 0 .IP "\fBschedinfo\fR optional \fI\-\-weight\fR \fBnumber\fR optional \fI\-\-cap\fR \fBnumber\fR \fIdomain-id\fR" 4 .IX Item "schedinfo optional --weight number optional --cap number domain-id" -Allows to show (and set) the domain scheduler parameters. This is currently -only defined for \s-1XEN_CREDIT\s0 scheduler, and the optional weight and cap -arguments allows to set the associated parameters in that scheduler if -provided. +.PD +Allows to show (and set) the domain scheduler parameters. +.Sp +\&\fBNote\fR: The weight and cap parameters are defined only for the +\&\s-1XEN_CREDIT\s0 scheduler and are now \fI\s-1DEPRECATED\s0\fR. .IP "\fBsetmem\fR \fIdomain-id\fR \fBkilobytes\fR" 4 .IX Item "setmem domain-id kilobytes" Change the current memory allocation in the guest domain. This should take @@ -431,9 +452,8 @@ to perform graceful shutdown, so there i succeed, and may take a variable length of time depending on what services must be shutdown in the domain. .Sp -For a xen guest vm the behavior of what happens to a domain when it reboots is set by the -\&\fIon_shutdown\fR parameter of the xmdomain.cfg file when the domain was -created. +The exact behavior of a domain when it shuts down is set by the +\&\fIon_shutdown\fR parameter in the domain's \s-1XML\s0 definition. .IP "\fBstart\fR \fIdomain-name\fR" 4 .IX Item "start domain-name" Start a (previously defined) inactive domain. @@ -466,10 +486,8 @@ and \fIcpulist\fR is a comma separated l .IX Item "vncdisplay domain-id" Output the \s-1IP\s0 address and port number for the \s-1VNC\s0 display. If the information is not available the processes will provide an exit code of 1. -.RE -.RS 4 -.SH "DEVICES COMMANDS" -.IX Header "DEVICES COMMANDS" +.SH "DEVICE COMMANDS" +.IX Header "DEVICE COMMANDS" The following commands manipulate devices associated to domains. The domain-id can be specified as an short integer, a name or a full \s-1UUID\s0. To better understand the values allowed as options for the command @@ -509,10 +527,8 @@ Detach a network interface from a domain \&\fItype\fR can be either \fInetwork\fR to indicate a physical network device or \fIbridge\fR to indicate a bridge to a device. It is recommended to use the \fImac\fR option to distinguish between the interfaces if more than one are present on the domain. -.RE -.RS 4 -.SH "VIRTUAL NETWORKS COMMANDS" -.IX Header "VIRTUAL NETWORKS COMMANDS" +.SH "VIRTUAL NETWORK COMMANDS" +.IX Header "VIRTUAL NETWORK COMMANDS" The following commands manipulate networks. Libvirt has the capability to define virtual networks which can then be used by domains and linked to actual network devices. For more detailed information about this feature @@ -538,6 +554,18 @@ effect immediately. .IP "\fBnet-dumpxml\fR \fInetwork\fR" 4 .IX Item "net-dumpxml network" Output the virtual network information as an \s-1XML\s0 dump to stdout. +.IP "\fBnet-edit\fR \fInetwork\fR" 4 +.IX Item "net-edit network" +Edit the \s-1XML\s0 configuration file for a network. +.Sp +This is equivalent to: + virsh net-dumpxml network > network.xml + edit network.xml + virsh define network.xml +except that it does some error checking. +.Sp +The editor used can be supplied by the \f(CW$EDITOR\fR environment +variable, or if that is not defined defaults to \f(CW\*(C`vi\*(C'\fR. .IP "\fBnet-list\fR optional \fI\-\-inactive\fR or \fI\-\-all\fR" 4 .IX Item "net-list optional --inactive or --all" Returns the list of active networks, if \fI\-\-all\fR is specified this will also @@ -555,34 +583,63 @@ Undefine the configuration for an inacti .IP "\fBnet-uuid\fR \fInetwork-name\fR" 4 .IX Item "net-uuid network-name" Convert a network name to network \s-1UUID\s0. -.RE -.RS 4 .SH "ENVIRONMENT" .IX Header "ENVIRONMENT" +The following environment variables can be set to alter the behaviour +of \f(CW\*(C`virsh\*(C'\fR .IP "\s-1VIRSH_DEFAULT_CONNECT_URI\s0" 4 .IX Item "VIRSH_DEFAULT_CONNECT_URI" The hypervisor to connect to by default. Set this to a \s-1URI\s0, in the same format as accepted by the \fBconnect\fR option. +.IP "LIBVIRT_DEBUG=LEVEL" 4 +.IX Item "LIBVIRT_DEBUG=LEVEL" +Turn on verbose debugging of all libvirt \s-1API\s0 calls. Valid levels are +.RS 4 +.IP "\(bu" 4 +LIBVIRT_DEBUG=1 +.Sp +Messages at level \s-1DEBUG\s0 or above +.IP "\(bu" 4 +LIBVIRT_DEBUG=2 +.Sp +Messages at level \s-1INFO\s0 or above +.IP "\(bu" 4 +LIBVIRT_DEBUG=3 +.Sp +Messages at level \s-1WARNING\s0 or above +.IP "\(bu" 4 +LIBVIRT_DEBUG=4 +.Sp +Messages at level \s-1ERROR\s0 or above .RE .RS 4 -.SH "SEE ALSO" -.IX Header "SEE ALSO" -\&\fIxm\fR\|(1), \fIxmdomain.cfg\fR\|(5), \fIxentop\fR\|(1) , <http://www.libvirt.org/> -.SH "AUTHOR" -.IX Header "AUTHOR" +.Sp +For further information about debugging options consult \f(CW\*(C`http://libvirt.org/logging.html\*(C'\fR +.RE +.SH "BUGS" +.IX Header "BUGS" +Report any bugs discovered to the libvirt community via the mailing +list \f(CW\*(C`http://libvirt.org/contact.html\*(C'\fR or bug tracker \f(CW\*(C`http://libvirt.org/bugs.html\*(C'\fR. +Alternatively report bugs to your software distributor / vendor. +.SH "AUTHORS" +.IX Header "AUTHORS" .Vb 2 \& Andrew Puch <apuch @ redhat.com> \& Daniel Veillard <veillard @ redhat.com> -.Ve -.Sp -.Vb 3 -\& Based on the xm man paged by +\& +\& Based on the xm man page by: \& Sean Dague <sean at dague dot net> \& Daniel Stekloff <dsteklof at us dot ibm dot com> .Ve -.SH "BUGS" -.IX Header "BUGS" -Bugs can be view on the RedHat buzilla page under the libvirt -<https://bugzilla.redhat.com/> -.Sp -<https://bugzilla.redhat.com/bugzilla/buglist.cgi?product=Fedora+Core&compon…> +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +Copyright (C) 2005, 2007\-2009 Red Hat, Inc. +.SH "LICENSE" +.IX Header "LICENSE" +virsh is distributed under the terms of the \s-1GNU\s0 \s-1LGPL\s0 v2+. +This is free software; see the source for copying conditions. There +is \s-1NO\s0 warranty; not even for \s-1MERCHANTABILITY\s0 or \s-1FITNESS\s0 \s-1FOR\s0 A \s-1PARTICULAR\s0 +\&\s-1PURPOSE\s0 +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fIvirt\-install\fR\|(1), \fIvirt\-xml\-validate\fR\|(1), \fIvirt\-top\fR\|(1), \fIvirt\-mem\fR\|(1), \fIvirt\-df\fR\|(1), <http://www.libvirt.org/> -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 5

[libvirt] PATCH: Use virDomainDefPtr to build QEMU args instead of virDomainObjPtr
by Daniel P. Berrange 20 Apr '09

20 Apr '09

This is a fairly simple NFC patch which changes the QEMU driver to use the virDomainDefPtr object when building command line arguments instead of the virDomainObjPtr. The command line building only needs the config, and none of the state, so virDomainDefPtr was more applicable. This was a pre-requisite for another patch I wrote, but have since thrown away. I think this one is worth applying anyway as a general cleanup. Daniel diff -r bd965abde333 src/qemu_conf.c --- a/src/qemu_conf.c Tue Apr 14 13:00:20 2009 +0100 +++ b/src/qemu_conf.c Thu Apr 16 10:34:10 2009 +0100 @@ -756,7 +756,7 @@ static int qemudBuildCommandLineChrDevSt */ int qemudBuildCommandLine(virConnectPtr conn, struct qemud_driver *driver, - virDomainObjPtr vm, + virDomainDefPtr def, unsigned int qemuCmdFlags, const char ***retargv, const char ***retenv, @@ -782,7 +782,7 @@ int qemudBuildCommandLine(virConnectPtr uname_normalize(&ut); - virUUIDFormat(vm->def->uuid, uuid); + virUUIDFormat(def->uuid, uuid); /* Migration is very annoying due to wildly varying syntax & capabilities * over time of KVM / QEMU codebases @@ -811,9 +811,9 @@ int qemudBuildCommandLine(virConnectPtr } } - emulator = vm->def->emulator; + emulator = def->emulator; if (!emulator) - emulator = virDomainDefDefaultEmulator(conn, vm->def, driver->caps); + emulator = virDomainDefDefaultEmulator(conn, def, driver->caps); if (!emulator) return -1; @@ -824,8 +824,8 @@ int qemudBuildCommandLine(virConnectPtr * 3. The qemu binary has the -no-kqemu flag */ if ((qemuCmdFlags & QEMUD_CMD_FLAG_KQEMU) && - STREQ(ut.machine, vm->def->os.arch) && - vm->def->virtType == VIR_DOMAIN_VIRT_QEMU) + STREQ(ut.machine, def->os.arch) && + def->virtType == VIR_DOMAIN_VIRT_QEMU) disableKQEMU = 1; /* Need to explicitly disable KVM if @@ -834,8 +834,8 @@ int qemudBuildCommandLine(virConnectPtr * 3. The qemu binary has the -no-kvm flag */ if ((qemuCmdFlags & QEMUD_CMD_FLAG_KVM) && - STREQ(ut.machine, vm->def->os.arch) && - vm->def->virtType == VIR_DOMAIN_VIRT_QEMU) + STREQ(ut.machine, def->os.arch) && + def->virtType == VIR_DOMAIN_VIRT_QEMU) disableKVM = 1; /* @@ -850,7 +850,7 @@ int qemudBuildCommandLine(virConnectPtr * 1. guest OS is i686 * 2. emulator is qemu-system-x86_64 */ - if (STREQ(vm->def->os.arch, "i686") && + if (STREQ(def->os.arch, "i686") && ((STREQ(ut.machine, "x86_64") && strstr(emulator, "kvm")) || strstr(emulator, "x86_64"))) @@ -931,10 +931,10 @@ int qemudBuildCommandLine(virConnectPtr * is set post-startup using the balloon driver. If balloon driver * is not supported, then they're out of luck anyway */ - snprintf(memory, sizeof(memory), "%lu", vm->def->maxmem/1024); - snprintf(vcpus, sizeof(vcpus), "%lu", vm->def->vcpus); - snprintf(domid, sizeof(domid), "%d", vm->def->id); - pidfile = virFilePid(driver->stateDir, vm->def->name); + snprintf(memory, sizeof(memory), "%lu", def->maxmem/1024); + snprintf(vcpus, sizeof(vcpus), "%lu", def->vcpus); + snprintf(domid, sizeof(domid), "%d", def->id); + pidfile = virFilePid(driver->stateDir, def->name); if (!pidfile) goto error; @@ -955,9 +955,9 @@ int qemudBuildCommandLine(virConnectPtr * a machine in the capabilities data for QEMU. So this * check is just here as a safety in case the unexpected * happens */ - if (vm->def->os.machine) { + if (def->os.machine) { ADD_ARG_LIT("-M"); - ADD_ARG_LIT(vm->def->os.machine); + ADD_ARG_LIT(def->os.machine); } if (cpu) { ADD_ARG_LIT("-cpu"); @@ -975,7 +975,7 @@ int qemudBuildCommandLine(virConnectPtr if (qemuCmdFlags & QEMUD_CMD_FLAG_NAME) { ADD_ARG_LIT("-name"); - ADD_ARG_LIT(vm->def->name); + ADD_ARG_LIT(def->name); } if (qemuCmdFlags & QEMUD_CMD_FLAG_UUID) { ADD_ARG_LIT("-uuid"); @@ -993,7 +993,7 @@ int qemudBuildCommandLine(virConnectPtr * if you ask for nographic. So we have to make sure we override * these defaults ourselves... */ - if (!vm->def->graphics) + if (!def->graphics) ADD_ARG_LIT("-nographic"); ADD_ARG_LIT("-monitor"); @@ -1002,19 +1002,19 @@ int qemudBuildCommandLine(virConnectPtr ADD_ARG_LIT("-pidfile"); ADD_ARG(pidfile); - if (vm->def->localtime) + if (def->localtime) ADD_ARG_LIT("-localtime"); if ((qemuCmdFlags & QEMUD_CMD_FLAG_NO_REBOOT) && - vm->def->onReboot != VIR_DOMAIN_LIFECYCLE_RESTART) + def->onReboot != VIR_DOMAIN_LIFECYCLE_RESTART) ADD_ARG_LIT("-no-reboot"); - if (!(vm->def->features & (1 << VIR_DOMAIN_FEATURE_ACPI))) + if (!(def->features & (1 << VIR_DOMAIN_FEATURE_ACPI))) ADD_ARG_LIT("-no-acpi"); - if (!vm->def->os.bootloader) { - for (i = 0 ; i < vm->def->os.nBootDevs ; i++) { - switch (vm->def->os.bootDevs[i]) { + if (!def->os.bootloader) { + for (i = 0 ; i < def->os.nBootDevs ; i++) { + switch (def->os.bootDevs[i]) { case VIR_DOMAIN_BOOT_CDROM: boot[i] = 'd'; break; @@ -1032,29 +1032,29 @@ int qemudBuildCommandLine(virConnectPtr break; } } - boot[vm->def->os.nBootDevs] = '\0'; + boot[def->os.nBootDevs] = '\0'; ADD_ARG_LIT("-boot"); ADD_ARG_LIT(boot); - if (vm->def->os.kernel) { + if (def->os.kernel) { ADD_ARG_LIT("-kernel"); - ADD_ARG_LIT(vm->def->os.kernel); + ADD_ARG_LIT(def->os.kernel); } - if (vm->def->os.initrd) { + if (def->os.initrd) { ADD_ARG_LIT("-initrd"); - ADD_ARG_LIT(vm->def->os.initrd); + ADD_ARG_LIT(def->os.initrd); } - if (vm->def->os.cmdline) { + if (def->os.cmdline) { ADD_ARG_LIT("-append"); - ADD_ARG_LIT(vm->def->os.cmdline); + ADD_ARG_LIT(def->os.cmdline); } } else { ADD_ARG_LIT("-bootloader"); - ADD_ARG_LIT(vm->def->os.bootloader); + ADD_ARG_LIT(def->os.bootloader); } - for (i = 0 ; i < vm->def->ndisks ; i++) { - virDomainDiskDefPtr disk = vm->def->disks[i]; + for (i = 0 ; i < def->ndisks ; i++) { + virDomainDiskDefPtr disk = def->disks[i]; if (disk->driverName != NULL && !STREQ(disk->driverName, "qemu")) { @@ -1071,8 +1071,8 @@ int qemudBuildCommandLine(virConnectPtr /* If QEMU supports boot=on for -drive param... */ if (qemuCmdFlags & QEMUD_CMD_FLAG_DRIVE_BOOT) { - for (i = 0 ; i < vm->def->os.nBootDevs ; i++) { - switch (vm->def->os.bootDevs[i]) { + for (i = 0 ; i < def->os.nBootDevs ; i++) { + switch (def->os.bootDevs[i]) { case VIR_DOMAIN_BOOT_CDROM: bootCD = 1; break; @@ -1086,11 +1086,11 @@ int qemudBuildCommandLine(virConnectPtr } } - for (i = 0 ; i < vm->def->ndisks ; i++) { + for (i = 0 ; i < def->ndisks ; i++) { virBuffer opt = VIR_BUFFER_INITIALIZER; char *optstr; int bootable = 0; - virDomainDiskDefPtr disk = vm->def->disks[i]; + virDomainDiskDefPtr disk = def->disks[i]; int idx = virDiskNameToIndex(disk->dst); const char *bus = virDomainDiskQEMUBusTypeToString(disk->bus); @@ -1159,10 +1159,10 @@ int qemudBuildCommandLine(virConnectPtr ADD_ARG(optstr); } } else { - for (i = 0 ; i < vm->def->ndisks ; i++) { + for (i = 0 ; i < def->ndisks ; i++) { char dev[NAME_MAX]; char file[PATH_MAX]; - virDomainDiskDefPtr disk = vm->def->disks[i]; + virDomainDiskDefPtr disk = def->disks[i]; if (disk->bus == VIR_DOMAIN_DISK_BUS_USB) { if (disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) { @@ -1200,14 +1200,14 @@ int qemudBuildCommandLine(virConnectPtr } } - if (!vm->def->nnets) { + if (!def->nnets) { ADD_ARG_LIT("-net"); ADD_ARG_LIT("none"); } else { int vlan = 0; - for (i = 0 ; i < vm->def->nnets ; i++) { + for (i = 0 ; i < def->nnets ; i++) { char nic[100]; - virDomainNetDefPtr net = vm->def->nets[i]; + virDomainNetDefPtr net = def->nets[i]; if (snprintf(nic, sizeof(nic), "nic,macaddr=%02x:%02x:%02x:%02x:%02x:%02x,vlan=%d%s%s", @@ -1306,13 +1306,13 @@ int qemudBuildCommandLine(virConnectPtr } } - if (!vm->def->nserials) { + if (!def->nserials) { ADD_ARG_LIT("-serial"); ADD_ARG_LIT("none"); } else { - for (i = 0 ; i < vm->def->nserials ; i++) { + for (i = 0 ; i < def->nserials ; i++) { char buf[4096]; - virDomainChrDefPtr serial = vm->def->serials[i]; + virDomainChrDefPtr serial = def->serials[i]; if (qemudBuildCommandLineChrDevStr(serial, buf, sizeof(buf)) < 0) goto error; @@ -1322,13 +1322,13 @@ int qemudBuildCommandLine(virConnectPtr } } - if (!vm->def->nparallels) { + if (!def->nparallels) { ADD_ARG_LIT("-parallel"); ADD_ARG_LIT("none"); } else { - for (i = 0 ; i < vm->def->nparallels ; i++) { + for (i = 0 ; i < def->nparallels ; i++) { char buf[4096]; - virDomainChrDefPtr parallel = vm->def->parallels[i]; + virDomainChrDefPtr parallel = def->parallels[i]; if (qemudBuildCommandLineChrDevStr(parallel, buf, sizeof(buf)) < 0) goto error; @@ -1339,8 +1339,8 @@ int qemudBuildCommandLine(virConnectPtr } ADD_ARG_LIT("-usb"); - for (i = 0 ; i < vm->def->ninputs ; i++) { - virDomainInputDefPtr input = vm->def->inputs[i]; + for (i = 0 ; i < def->ninputs ; i++) { + virDomainInputDefPtr input = def->inputs[i]; if (input->bus == VIR_DOMAIN_INPUT_BUS_USB) { ADD_ARG_LIT("-usbdevice"); @@ -1348,21 +1348,21 @@ int qemudBuildCommandLine(virConnectPtr } } - if (vm->def->graphics && - vm->def->graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC) { + if (def->graphics && + def->graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC) { virBuffer opt = VIR_BUFFER_INITIALIZER; char *optstr; if (qemuCmdFlags & QEMUD_CMD_FLAG_VNC_COLON) { - if (vm->def->graphics->data.vnc.listenAddr) - virBufferAdd(&opt, vm->def->graphics->data.vnc.listenAddr, -1); + if (def->graphics->data.vnc.listenAddr) + virBufferAdd(&opt, def->graphics->data.vnc.listenAddr, -1); else if (driver->vncListen) virBufferAdd(&opt, driver->vncListen, -1); virBufferVSprintf(&opt, ":%d", - vm->def->graphics->data.vnc.port - 5900); + def->graphics->data.vnc.port - 5900); - if (vm->def->graphics->data.vnc.passwd || + if (def->graphics->data.vnc.passwd || driver->vncPassword) virBufferAddLit(&opt, ",password"); @@ -1387,7 +1387,7 @@ int qemudBuildCommandLine(virConnectPtr } } else { virBufferVSprintf(&opt, "%d", - vm->def->graphics->data.vnc.port - 5900); + def->graphics->data.vnc.port - 5900); } if (virBufferError(&opt)) goto no_memory; @@ -1396,22 +1396,22 @@ int qemudBuildCommandLine(virConnectPtr ADD_ARG_LIT("-vnc"); ADD_ARG(optstr); - if (vm->def->graphics->data.vnc.keymap) { + if (def->graphics->data.vnc.keymap) { ADD_ARG_LIT("-k"); - ADD_ARG_LIT(vm->def->graphics->data.vnc.keymap); + ADD_ARG_LIT(def->graphics->data.vnc.keymap); } - } else if (vm->def->graphics && - vm->def->graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) { + } else if (def->graphics && + def->graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_SDL) { char *xauth = NULL; char *display = NULL; - if (vm->def->graphics->data.sdl.xauth && + if (def->graphics->data.sdl.xauth && virAsprintf(&xauth, "XAUTHORITY=%s", - vm->def->graphics->data.sdl.xauth) < 0) + def->graphics->data.sdl.xauth) < 0) goto no_memory; - if (vm->def->graphics->data.sdl.display && + if (def->graphics->data.sdl.display && virAsprintf(&display, "DISPLAY=%s", - vm->def->graphics->data.sdl.display) < 0) { + def->graphics->data.sdl.display) < 0) { VIR_FREE(xauth); goto no_memory; } @@ -1420,19 +1420,19 @@ int qemudBuildCommandLine(virConnectPtr ADD_ENV(xauth); if (display) ADD_ENV(display); - if (vm->def->graphics->data.sdl.fullscreen) + if (def->graphics->data.sdl.fullscreen) ADD_ARG_LIT("-full-screen"); } /* Add sound hardware */ - if (vm->def->nsounds) { + if (def->nsounds) { int size = 100; char *modstr; if (VIR_ALLOC_N(modstr, size+1) < 0) goto no_memory; - for (i = 0 ; i < vm->def->nsounds && size > 0 ; i++) { - virDomainSoundDefPtr sound = vm->def->sounds[i]; + for (i = 0 ; i < def->nsounds && size > 0 ; i++) { + virDomainSoundDefPtr sound = def->sounds[i]; const char *model = virDomainSoundModelTypeToString(sound->model); if (!model) { VIR_FREE(modstr); @@ -1442,7 +1442,7 @@ int qemudBuildCommandLine(virConnectPtr } strncat(modstr, model, size); size -= strlen(model); - if (i < (vm->def->nsounds - 1)) + if (i < (def->nsounds - 1)) strncat(modstr, ",", size--); } ADD_ARG_LIT("-soundhw"); @@ -1450,11 +1450,11 @@ int qemudBuildCommandLine(virConnectPtr } /* Add host passthrough hardware */ - for (i = 0 ; i < vm->def->nhostdevs ; i++) { + for (i = 0 ; i < def->nhostdevs ; i++) { int ret; char* usbdev; char* pcidev; - virDomainHostdevDefPtr hostdev = vm->def->hostdevs[i]; + virDomainHostdevDefPtr hostdev = def->hostdevs[i]; /* USB */ if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS && diff -r bd965abde333 src/qemu_conf.h --- a/src/qemu_conf.h Tue Apr 14 13:00:20 2009 +0100 +++ b/src/qemu_conf.h Thu Apr 16 10:34:10 2009 +0100 @@ -124,7 +124,7 @@ int qemudExtractVersionInfo int qemudBuildCommandLine (virConnectPtr conn, struct qemud_driver *driver, - virDomainObjPtr dom, + virDomainDefPtr def, unsigned int qemuCmdFlags, const char ***retargv, const char ***retenv, diff -r bd965abde333 src/qemu_driver.c --- a/src/qemu_driver.c Tue Apr 14 13:00:20 2009 +0100 +++ b/src/qemu_driver.c Thu Apr 16 10:34:10 2009 +0100 @@ -1390,7 +1390,7 @@ static int qemudStartVMDaemon(virConnect goto cleanup; vm->def->id = driver->nextvmid++; - if (qemudBuildCommandLine(conn, driver, vm, + if (qemudBuildCommandLine(conn, driver, vm->def, qemuCmdFlags, &argv, &progenv, &tapfds, &ntapfds, migrateFrom) < 0) goto cleanup; diff -r bd965abde333 tests/qemuxml2argvtest.c --- a/tests/qemuxml2argvtest.c Tue Apr 14 13:00:20 2009 +0100 +++ b/tests/qemuxml2argvtest.c Thu Apr 16 10:34:10 2009 +0100 @@ -34,7 +34,6 @@ static int testCompareXMLToArgvFiles(con const char **tmp = NULL; int ret = -1, len, flags; virDomainDefPtr vmdef = NULL; - virDomainObj vm; if (virtTestLoadFile(cmd, &expectargv, MAX_FILE) < 0) goto fail; @@ -43,20 +42,17 @@ static int testCompareXMLToArgvFiles(con VIR_DOMAIN_XML_INACTIVE))) goto fail; - memset(&vm, 0, sizeof vm); - vm.def = vmdef; if (extraFlags & QEMUD_CMD_FLAG_DOMID) - vm.def->id = 6; + vmdef->id = 6; else - vm.def->id = -1; - vm.pid = -1; + vmdef->id = -1; flags = QEMUD_CMD_FLAG_VNC_COLON | QEMUD_CMD_FLAG_NO_REBOOT | extraFlags; if (qemudBuildCommandLine(NULL, &driver, - &vm, flags, &argv, &qenv, + vmdef, flags, &argv, &qenv, NULL, NULL, migrateFrom) < 0) goto fail; -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] PATCH: Change virDomainAssignDef to lookup on UUID
by Daniel P. Berrange 20 Apr '09

20 Apr '09

The virDomainAssignDef method currently uses the 'name' field to lookup domains. The UUID is the best internal identifier, so this changes over to use that instead. Daniel diff -r 4b9560b57861 src/domain_conf.c --- a/src/domain_conf.c Fri Apr 17 11:50:54 2009 +0100 +++ b/src/domain_conf.c Fri Apr 17 12:05:11 2009 +0100 @@ -498,7 +498,7 @@ virDomainObjPtr virDomainAssignDef(virCo { virDomainObjPtr domain; - if ((domain = virDomainFindByName(doms, def->name))) { + if ((domain = virDomainFindByUUID(doms, def->uuid))) { if (!virDomainIsActive(domain)) { virDomainDefFree(domain->def); domain->def = def; -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] PATCH: Fix remote driver create/destroy methods to update ID field
by Daniel P. Berrange 20 Apr '09

20 Apr '09

If you have an existing virDomainPtr object, and start it using the virDomainCreate(virDomainPtr dom) method, then internal cached 'id' field in the virDomainPtr object is never updated. Even more annoyingly the remote protocol for the 'create' method doesn't even bother to return the ID of the newly started guest. Thre is a similar problem with the virDomainDestroy method, not resetting the cached 'id' back to -1. We can't guarentee that the 'id' field is up2date wrt to changes made by another libvirt client, but we can at least make sure its accurate wrt to changes this client is making. For the destroy method the fix is trivial. For the create method, after a successful creation, we do a lookup based on UUID to fetch the real live ID, since the create method didn't return it for us. This fixes a significant number of problems identified by the TCK on the QEMU driver usage. Regards, Daniel diff -r 9ff786a7908d src/remote_internal.c --- a/src/remote_internal.c Fri Apr 17 12:05:11 2009 +0100 +++ b/src/remote_internal.c Fri Apr 17 12:06:21 2009 +0100 @@ -1939,6 +1939,7 @@ remoteDomainDestroy (virDomainPtr domain goto done; rv = 0; + domain->id = -1; done: remoteDriverUnlock(priv); @@ -2735,6 +2736,8 @@ remoteDomainCreate (virDomainPtr domain) { int rv = -1; remote_domain_create_args args; + remote_domain_lookup_by_uuid_args args2; + remote_domain_lookup_by_uuid_ret ret2; struct private_data *priv = domain->conn->privateData; remoteDriverLock(priv); @@ -2746,6 +2749,16 @@ remoteDomainCreate (virDomainPtr domain) (xdrproc_t) xdr_void, (char *) NULL) == -1) goto done; + memcpy (args2.uuid, domain->uuid, VIR_UUID_BUFLEN); + memset (&ret2, 0, sizeof ret2); + if (call (domain->conn, priv, 0, REMOTE_PROC_DOMAIN_LOOKUP_BY_UUID, + (xdrproc_t) xdr_remote_domain_lookup_by_uuid_args, (char *) &args2, + (xdrproc_t) xdr_remote_domain_lookup_by_uuid_ret, (char *) &ret2) == -1) + goto done; + + domain->id = ret2.dom.id; + xdr_free ((xdrproc_t) &xdr_remote_domain_lookup_by_uuid_ret, (char *) &ret2); + rv = 0; done: -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] PATCH: Improve error reporting for operations on inactive domains
by Daniel P. Berrange 20 Apr '09

20 Apr '09

If you try todo an operation on an inactive QEMU guest which is not applicable, eg ask to pause an inactive guest, then you currently get a useless message # virsh suspend demo error: Failed to suspend domain demo error: invalid domain pointer in no domain with matching id -1 There are two issues here - The QEMU driver is mistakenly doing a lookup-by-id when locating the guest in question. It should in fact do lookup-by-uuid for all APIs since that's the best unique identifier. - It was using VIR_ERR_INVALID_DOMAIN code instead of VIR_ERR_NO_DOMAIN code, hence the 'invalid domain pointer' bogus message. This patch changes all QEMU APIs to lookup based on UUID, and use the correct VIR_ERR_NO_DOMAIN code when reporting failures. You now get to see the real useful error message later in the API where it validates whether the guest is running or not # virsh suspend demo error: Failed to suspend domain demo error: operation failed: domain is not running One thing I'm wondering, is whether we should introduce an explicit error code for operations that are not applicable. eg, instead of giving VIR_ERR_OPERATION_FAILED, we could give back a code like VIR_ERR_OPERATION_INVALID. This would let callers distinguish real failure of the operation, vs the fact that it simply isn't applicable for inactive guests. Daniel diff -r 5b88ef324d90 src/qemu_driver.c --- a/src/qemu_driver.c Fri Apr 17 12:06:21 2009 +0100 +++ b/src/qemu_driver.c Fri Apr 17 12:32:54 2009 +0100 @@ -1984,7 +1984,8 @@ static virDomainPtr qemudDomainLookupByI qemuDriverUnlock(driver); if (!vm) { - qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, NULL); + qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching id %d"), id); goto cleanup; } @@ -2008,7 +2009,10 @@ static virDomainPtr qemudDomainLookupByU qemuDriverUnlock(driver); if (!vm) { - qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, NULL); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(uuid, uuidstr); + qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuid); goto cleanup; } @@ -2032,7 +2036,8 @@ static virDomainPtr qemudDomainLookupByN qemuDriverUnlock(driver); if (!vm) { - qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, NULL); + qemudReportError(conn, NULL, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching name '%s'"), name); goto cleanup; } @@ -2182,11 +2187,14 @@ static int qemudDomainSuspend(virDomainP virDomainEventPtr event = NULL; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - qemuDriverUnlock(driver); - - if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + qemuDriverUnlock(driver); + + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } if (!virDomainIsActive(vm)) { @@ -2232,12 +2240,14 @@ static int qemudDomainResume(virDomainPt virDomainEventPtr event = NULL; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - qemuDriverUnlock(driver); - - if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + qemuDriverUnlock(driver); + + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } if (!virDomainIsActive(vm)) { @@ -2281,12 +2291,14 @@ static int qemudDomainShutdown(virDomain int ret = -1; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - qemuDriverUnlock(driver); - - if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + qemuDriverUnlock(driver); + + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2312,10 +2324,12 @@ static int qemudDomainDestroy(virDomainP virDomainEventPtr event = NULL; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2349,8 +2363,10 @@ static char *qemudDomainGetOSType(virDom vm = virDomainFindByUUID(&driver->domains, dom->uuid); qemuDriverUnlock(driver); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2375,9 +2391,8 @@ static unsigned long qemudDomainGetMaxMe if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; - - virUUIDFormat(dom->uuid, uuidstr); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2401,9 +2416,8 @@ static int qemudDomainSetMaxMemory(virDo if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; - - virUUIDFormat(dom->uuid, uuidstr); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2525,9 +2539,8 @@ static int qemudDomainSetMemory(virDomai qemuDriverUnlock(driver); if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; - - virUUIDFormat(dom->uuid, uuidstr); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2566,8 +2579,10 @@ static int qemudDomainGetInfo(virDomainP vm = virDomainFindByUUID(&driver->domains, dom->uuid); qemuDriverUnlock(driver); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2713,11 +2728,13 @@ static int qemudDomainSave(virDomainPtr header.version = QEMUD_SAVE_VERSION; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - - if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -2850,9 +2867,8 @@ static int qemudDomainSetVcpus(virDomain if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; - - virUUIDFormat(dom->uuid, uuidstr); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -3045,9 +3061,8 @@ static int qemudDomainGetMaxVcpus(virDom if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; - - virUUIDFormat(dom->uuid, uuidstr); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -3080,9 +3095,8 @@ static int qemudDomainGetSecurityLabel(v if (!vm) { char uuidstr[VIR_UUID_STRING_BUFLEN]; - - virUUIDFormat(dom->uuid, uuidstr); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -3294,8 +3308,10 @@ static char *qemudDomainDumpXML(virDomai qemuDriverUnlock(driver); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -3496,8 +3512,10 @@ static int qemudDomainStart(virDomainPtr qemuDriverUnlock(driver); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -3586,8 +3604,10 @@ static int qemudDomainUndefine(virDomain vm = virDomainFindByUUID(&driver->domains, dom->uuid); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -3979,9 +3999,11 @@ static int qemudDomainAttachDevice(virDo qemuDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); if (!vm) { - qemuDriverUnlock(driver); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + qemuDriverUnlock(driver); + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4129,9 +4151,11 @@ static int qemudDomainDetachDevice(virDo qemuDriverLock(driver); vm = virDomainFindByUUID(&driver->domains, dom->uuid); if (!vm) { - qemuDriverUnlock(driver); - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + qemuDriverUnlock(driver); + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4182,8 +4206,10 @@ static int qemudDomainGetAutostart(virDo qemuDriverUnlock(driver); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4208,8 +4234,10 @@ static int qemudDomainSetAutostart(virDo qemuDriverUnlock(driver); if (!vm) { - qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4283,11 +4311,13 @@ qemudDomainBlockStats (virDomainPtr dom, virDomainDiskDefPtr disk = NULL; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - qemuDriverUnlock(driver); - if (!vm) { - qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + qemuDriverUnlock(driver); + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } if (!virDomainIsActive (vm)) { @@ -4418,12 +4448,14 @@ qemudDomainInterfaceStats (virDomainPtr int ret = -1; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - qemuDriverUnlock(driver); - - if (!vm) { - qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + qemuDriverUnlock(driver); + + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4486,8 +4518,10 @@ qemudDomainBlockPeek (virDomainPtr dom, qemuDriverUnlock(driver); if (!vm) { - qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - "%s", _("no domain with matching uuid")); + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4554,12 +4588,14 @@ qemudDomainMemoryPeek (virDomainPtr dom, int fd = -1, ret = -1; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - qemuDriverUnlock(driver); - - if (!vm) { - qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + qemuDriverUnlock(driver); + + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -4887,10 +4923,12 @@ qemudDomainMigratePerform (virDomainPtr int paused = 0; qemuDriverLock(driver); - vm = virDomainFindByID(&driver->domains, dom->id); - if (!vm) { - qemudReportError (dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching id %d"), dom->id); + vm = virDomainFindByUUID(&driver->domains, dom->uuid); + if (!vm) { + char uuidstr[VIR_UUID_STRING_BUFLEN]; + virUUIDFormat(dom->uuid, uuidstr); + qemudReportError(dom->conn, dom, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching uuid '%s'"), uuidstr); goto cleanup; } @@ -5018,8 +5056,8 @@ qemudDomainMigrateFinish2 (virConnectPtr qemuDriverLock(driver); vm = virDomainFindByName(&driver->domains, dname); if (!vm) { - qemudReportError (dconn, NULL, NULL, VIR_ERR_INVALID_DOMAIN, - _("no domain with matching name %s"), dname); + qemudReportError (dconn, NULL, NULL, VIR_ERR_NO_DOMAIN, + _("no domain with matching name '%s'"), dname); goto cleanup; } -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] [PATCH 1/1] lxc: only do CLONE_NEWUSER when kernel supports it
by Serge E. Hallyn 20 Apr '09

20 Apr '09

I was trying to get the lxc driver to work on ubuntu jaunty. This patch gets me further than I was getting before. Like I say below, it's probably not the right way though. -serge >From 2513f8a7e0654e84570fe0ef2204dabe276b9e4e Mon Sep 17 00:00:00 2001 From: root <root(a)jaunty.(none)> Date: Fri, 17 Apr 2009 16:41:01 -0500 Subject: [PATCH 1/1] lxc: only do CLONE_NEWUSER when kernel supports it The ubuntu jaunty kernel is not compiled with USER_NS. Since libvirt-lxc always does clone(CLONE_NEWUSER) it gets -EINVAL and mysteriously claims to be unable to contact hypervisor. This patch isn't the right thing to do, but I'm not sure what is. User namespaces do (since recently) isolate the in-kernel keyring. So the right thing might be to add a flag to the xml definition file to specify whether to use a user namespace. This patch doesn't do that, rather it always does CLONE_NEWUSER if the kernel supports it, and never if not. Signed-off-by: Serge Hallyn <serue(a)us.ibm.com> --- src/lxc_container.c | 15 +++++++++++++-- src/lxc_container.h | 1 + 2 files changed, 14 insertions(+), 2 deletions(-) diff --git a/src/lxc_container.c b/src/lxc_container.c index 67c66bd..8069af7 100644 --- a/src/lxc_container.c +++ b/src/lxc_container.c @@ -666,6 +666,11 @@ static int lxcContainerChild( void *data ) return lxcContainerExecInit(vmDef); } +int userns_supported(void) +{ + return lxcContainerAvailable(LXC_CONTAINER_FEATURE_USER) == 0; +} + /** * lxcContainerStart: * @driver: pointer to driver structure @@ -694,7 +699,10 @@ int lxcContainerStart(virDomainDefPtr def, } stacktop = stack + stacksize; - flags = CLONE_NEWPID|CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWUSER|CLONE_NEWIPC|SIGCHLD; + flags = CLONE_NEWPID|CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWIPC|SIGCHLD; + + if (userns_supported()) + flags |= CLONE_NEWUSER; if (def->nets != NULL) flags |= CLONE_NEWNET; @@ -719,13 +727,16 @@ static int lxcContainerDummyChild(void *argv ATTRIBUTE_UNUSED) int lxcContainerAvailable(int features) { - int flags = CLONE_NEWPID|CLONE_NEWNS|CLONE_NEWUTS|CLONE_NEWUSER| + int flags = CLONE_NEWPID|CLONE_NEWNS|CLONE_NEWUTS| CLONE_NEWIPC|SIGCHLD; int cpid; char *childStack; char *stack; int childStatus; + if (features & LXC_CONTAINER_FEATURE_USER) + flags |= CLONE_NEWUSER; + if (features & LXC_CONTAINER_FEATURE_NET) flags |= CLONE_NEWNET; diff --git a/src/lxc_container.h b/src/lxc_container.h index 5d037b0..b99e83e 100644 --- a/src/lxc_container.h +++ b/src/lxc_container.h @@ -28,6 +28,7 @@ enum { LXC_CONTAINER_FEATURE_NET = (1 << 0), + LXC_CONTAINER_FEATURE_USER = (1 << 1), }; #define LXC_DEV_MAJ_MEMORY 1 -- 1.6.0.4

3 2

[libvirt] [PATCH] Fix typo in manpage
by Mark McLoughlin 20 Apr '09

20 Apr '09

Hey, Just committed this simple patch. Cheers, Mark. Subject: [PATCH] Fix typo in manpage It's "service libvirtd start", not "service start libvirtd". Reported-by: Robert P. J. Day <rpjday(a)crashcourse.ca> Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> --- docs/virsh.pod | 2 +- virsh.1 | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/docs/virsh.pod b/docs/virsh.pod index 2438984..6434d78 100644 --- a/docs/virsh.pod +++ b/docs/virsh.pod @@ -34,7 +34,7 @@ the program. All B<virsh> operations rely upon the libvirt library. For any virsh commands to run xend/qemu, or what ever virtual library that libvirt supports. For this reason you should start xend/qemu as a service when your system first boots using xen/qemu. This can usually be done using the command -B<service start libvirtd> . +B<service libvirtd start> . Most B<virsh> commands require root privileges to run due to the communications channels used to talk to the hypervisor. Running as diff --git a/virsh.1 b/virsh.1 index 2197c20..45ea614 100644 --- a/virsh.1 +++ b/virsh.1 @@ -171,7 +171,7 @@ the program. .IX Header "NOTES" All \fBvirsh\fR operations rely upon the libvirt library. For any virsh commands to run xend/qemu, or what ever virtual library that libvirt supports. For this reason you should start xend/qemu as a service when your system first boots using xen/qemu. This can usually be done using the command -\&\fBservice start libvirtd\fR . +\&\fBservice libvirtd start\fR . .PP Most \fBvirsh\fR commands require root privileges to run due to the communications channels used to talk to the hypervisor. Running as -- 1.6.0.6

1 0

[libvirt] [PATCH] src/bridge.c compile error
by Anton Protopopov 20 Apr '09

20 Apr '09

Hi. The absense of SIOCBRADDBR causes compile error: > bridge.c:143: error: conflicting types for 'brAddBridge' > bridge.h:50: error: previous declaration of 'brAddBridge' was here See attached patch for fix. By the way, what functionality do one loose if his system isn't supporting SIOCBRADDBR?

2 1

[libvirt] KVM migration with uri = NULL
by Zvi Dubitzky 20 Apr '09

20 Apr '09

What is the meaning of using virDomainMigrate () with NULL uri. Looking at the code of qemudDomainMigratePrepare2 ()/ qemu_driver.c, I understand that it tries to perform a migration to another VM on the same node . Is that correct ? Anyhow the code gets stuck while doing this with KVM-84 driver which does ok a live migration between 2 different nodes via QEMU monitor thanks Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL

3 2

[libvirt] [PATCH 0/3] Drop pool lock during volume allocation
by Cole Robinson 17 Apr '09

17 Apr '09

The following three patches rearrange storage volume creation so that we can drop the pool lock during the long allocation process. This also has the nice side effect of allowing storage allocation progress reporting, if the API user polls the volume in a separate thread. This is currently only implemented for FS volumes: all other volume creation will maintain existing behavior. Thanks, Cole

3 12

[libvirt] KVM live migration with libvirt
by Zvi Dubitzky 17 Apr '09

17 Apr '09

while trying a live migration for KVM with libvirt I call virDomainMigrate () with the following parameters virDomainMigrate (localDomain, (virConnectPtr)dconn, VIR_MIGRATE_LIVE, "vm_mig_dubi", "tcp:9.148.4.95:4444", 0 ); The connection with the target VM was established ok Still I get the following error: libvir: QEMU error : invalid argument in only tcp URIs are supported for KVM migrations looking at the code of qemu_driver.c /qemudDomainMigratePrepare2() is see the following code (for version2 case): if (!STREQLEN (uri_in, "tcp:", 6)) { qemudReportError (dconn, NULL, NULL, VIR_ERR_INVALID_ARG, "%s", _("only tcp URIs are supported for KVM migrations")); goto cleanup; } why is the strncmp using length 6 and not 4 . I think this is the reason for the failure . If I put a NULL af ter the "tcp:" then I do not fail here (strncmp stop at the first NULL) but I fail one step later pasrsing the port because the NULL terminates the string Do we need a fix here ? thanks Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL

2 1

[libvirt] [PATCH 1/4] VirtualBox support
by Pritesh Kothari 17 Apr '09

17 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patches are organized as below: Patch 0/4: contains sample xml file Patch 1/4: contains diff of files already in libvirt. Patch 2/4: contains new files needed for VirtualBox support. Patch 3/4: contains support for host only and internal network. Patch 4/4: contains support for rdp in libvirt as mentioned by danpb (also had sent it separately earlier) Regards, Pritesh

2 1

[libvirt] virGetNodeinfo .cpus
by Zvi Dubitzky 17 Apr '09

17 Apr '09

virNodeGetInfo() returns .cpus as 2 but the /proc/cpuinfo of the node shows 2 processors with 2 cores each ('cpu cores') . Or maybe the 'core id' is what counts in the /proc/cpuinfo and that one gets vaue 0 , 1 only i.e totally 2 can you clarify ? Here is the output of /proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 2210 HE stepping : 2 cpu MHz : 1800.034 cache size : 1024 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 3600.06 clflush size : 64 power management: ts fid vid ttp tm stc processor : 1 vendor_id : AuthenticAMD cpu family : 15 model : 65 model name : Dual-Core AMD Opteron(tm) Processor 2210 HE stepping : 2 cpu MHz : 1800.034 cache size : 1024 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy bogomips : 3600.23 clflush size : 64 power management: ts fid vid ttp tm stc Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL

3 3

[libvirt] virNodeGetFreeMemory() returns bytes with Xen driver
by Tyrel Datwyler 17 Apr '09

17 Apr '09

The libvirt API states that the return value of virNodeGetFreeMemory() is in kilobytes. When making this call against a Xen hypervisor and comparing the returned value with what is listed by "xm info" it appears that libvirt is returning the free memory in bytes and not kilobytes. Can anybody confirm this behavior? This code snippet: conn = virConnectOpen("xen:///localhost/"); hostmem = virNodeGetFreeMemory(conn); fprintf(stdout, "Host free memory = %llu\n", hostmem); produces the following output: Host free memory = 3236012032 The following comes from running "xm info" on the Xen host: free_memory : 3086 The libvirt value is convertable into the "xm" returned value if bytes is assumed. Regards, Tyrel Datwyler Linux Software Engineer eServer Systems Management IBM Systems and Technology Group Email: tyreld(a)us.ibm.com External: (503) 578-3489, T/L: 775-3489

2 1

[libvirt] Secure migration performance numbers
by Chris Lalancette 17 Apr '09

17 Apr '09

All, I've finally gotten the third implementation of secure migration basically working, and have some performance numbers to share. Just to refresh everyone's memory, I'm looking both at host CPU usage and total time to migrate a guest, using 4 different implementations: 1) Qemu->qemu migration. This is today's, unencrypted, migration 2) GnuTLS->GnutTLS migration. This implementation opens a side-band gnutls channel, and then dumps the data over that side channel. 3) RPC migration. This version of the RPC migration uses the standard RPC mechanisms to dump all of the migration over the wire. 4) "Fire and forget" RPC migration. This version of the RPC migration uses the in-place RPC mechanism, but doesn't wait for an explicit acknowlegement from the other side. In all cases, I took a RHEL-5 KVM guest running on an F-11 host, booted up the guest with 3GB of memory, ran a program that touched all of memory in the guest until it started to swap, and then live-migrated the guest. This isn't *quite* worst case (worst case would be a program that allocates all of memory and continually changes it as fast as possible), but it's a good baseline. For case 1, the migrations took an average of 29 seconds to complete. During the migration, idle CPU percentage on the host varied between 33 and 97 percent. This is our baseline. For case 2, the migrations took an average of 44 seconds to complete. During the migration, idle CPU percentage on the host was pretty uniformly 0 (all processor time was approximately evenly split between user and system). For case 3, the migrations took an average of 42 seconds to complete. During the migration, idle CPU percentage on the host varied between 12 and 48 percent. For case 4, the migrations took an average of 112 seconds to complete. During the migration, idle CPU percentage on the host varied between 18 and 50 percent. One thing of note; I'm least confident in the implementation of case 4. It still has a race condition that hits sometimes (which effectively kills the test), and it's the most invasive in terms of the areas of code it touches. The patch is really ugly at the moment, but if people want their eyes to bleed, I can post it. Based on the above, it actually looks like case 3 might be the best to pursue. While it may be possible to get better results out of case 4, I have some concerns with the approach, particularly around error reporting. The "fire and forget" nature of the implementation, combined with the departure from the normal RPC mechanism, makes it less attractive in my opinion. Thoughts? -- Chris Lalancette

1 0

[libvirt] PATCH: Domain XML import/export from/to native formats
by Daniel P. Berrange 17 Apr '09

17 Apr '09

This is an initial patch providing an API to import and export the Domain XML from/to native hypervisor formats. This implementation provides - Import from Xen XM config file format - Export to Xen XM config file format - Import from Xen SEXPR format - Export to Xen SEXPR format - Export to QEMU argv list Still todo is the more complex, - Import from QEMU argv list which is actually the most interesting & useful one, since that helps people currently using QEMU migrate over to using libvirt. The two new public APIs are /** * virConnectImportDomainXML: * @conn: a connection object * @format: configuration format importing from * @config: the configuration data to import * @flags: currently unused, pass 0 * * Reads native configuration data describing a domain, and * generates libvirt domain XML. The format of the native * data is hypervisor dependant. * * Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. * the caller must free() the returned value. */ char * virConnectImportDomainXML(virConnectPtr conn, const char *format, const char *config, unsigned int flags); /** * virConnectExportDomainXML: * @conn: a connection object * @format: configuration format exporting to * @xml: the domain configuration to export * @flags: currently unused, pass 0 * * Reads a domain XML configuration document, and generates * generates a native configuration file describing the domain. * The format of the native data is hypervisor dependant. * * Returns a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error. * the caller must free() the returned value. */ char * virConnectExportDomainXML(virConnectPtr conn, const char *format, const char *xml, unsigned int flags); This is integrated via virsh eg import a Xen SEXPR config to libvirt domain XML # virsh import-domxml xen-sxpr demo.sxpr <domain type='xen' id='78'> <name>rhel5pv</name> <uuid>8f07fe28-753f-2729-d76d-bdbd892f949a</uuid> <memory>2560000</memory> <currentMemory>307200</currentMemory> ...snip rest... <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/> </devices> </domain> eg, export libvirt domain XML to Xen SEXPR format # virsh export-domxml xen-sxpr demo.xml (vm (name 'Xen')(memory 256)(maxmem 256)(vcpus 1) (uuid '971784f4-523b-1a8c-99eb-7e66a539c3ac') ...snip... (script 'vif-bridge')))) eg import a Xen XM config file # virsh import-domxml xen-xm demo.cfg <domain type='xen'> <name>rhel5pv</name> <uuid>8f07fe28-753f-2729-d76d-bdbd892f949a</uuid> <memory>2560000</memory> <currentMemory>307200</currentMemory> <vcpu>4</vcpu> <bootloader>/usr/bin/pygrub</bootloader> ....snip... </domain> eg export to Xen XM config file # virsh export-domxml xen-xm demo.xml name = "Xen" uuid = "971784f4-523b-1a8c-99eb-7e66a539c3ac" maxmem = 256 memory = 256 vcpus = 1 kernel = "/var/lib/xen/vmlinuz" ...snip... vif = [ "mac=00:16:3e:53:45:a9,bridge=virbr0" ] eg export to QEMU ARGV format # virsh -c qemu:///session export-domxml qemu-argv ~/rhel5xen.xml LC_ALL=C LD_LIBRARY_PATH=/home/berrange/usr/lib PATH=/usr/bin:/bin HOME=/home/berrange USER=berrange LOGNAME=berrange /usr/bin/qemu-kvm -S -M pc -m 1967 -smp 4 -name rhel5xen -uuid be8b4f9a-492a-db25-7aed-f831dcec9127 -monitor pty -pidfile /home/berrange/.libvirt/qemu/run/rhel5xen.pid -boot c -drive file=/dev/HostVG/rhel5xen,if=ide,index=0,boot=on -net nic,macaddr=00:16:3e:09:f2:eb,vlan=0 -net tap,vlan=0 -net nic,macaddr=00:16:3e:09:f3:eb,vlan=1 -net tap,vlan=1 -net nic,macaddr=00:16:3e:09:f4:eb,vlan=2 -net tap,vlan=2 -net nic,macaddr=00:16:3e:09:f5:eb,vlan=3 -net tap,vlan=3 -serial file:/tmp/rhel5xen.log -parallel none -usb -vnc 0.0.0.0:0 -k en-us The import thing to note here is that the import/export process is done via the real libvirt drivers, but the destination / source configs are not loaded into the hypervisor / mangement app at all. It is purely a put a string in, get a string out process. What you do with the generated config is up to you. Also note that you can't export a Xen config using the QEMU driver, and vica-verca. The openvz, test, uml drivers don't implement these new APIs, though openvz & uml could be made to. The Remote driver & daemon is implemented here, and python bindings are provided too. docs/devhelp/libvirt-libvirt.html | 12 ++ docs/html/libvirt-libvirt.html | 8 + docs/libvirt-api.xml | 20 ++++ docs/libvirt-refs.xml | 158 +++++++++++++++++++++++++------------ include/libvirt/libvirt.h | 10 ++ include/libvirt/libvirt.h.in | 10 ++ qemud/remote.c | 34 +++++++ qemud/remote_dispatch_args.h | 2 qemud/remote_dispatch_prototypes.h | 14 +++ qemud/remote_dispatch_ret.h | 2 qemud/remote_dispatch_table.h | 14 ++- qemud/remote_protocol.c | 44 ++++++++++ qemud/remote_protocol.h | 34 +++++++ qemud/remote_protocol.x | 27 ++++++ src/driver.h | 12 ++ src/libvirt.c | 99 +++++++++++++++++++++++ src/libvirt_public.syms | 6 + src/lxc_driver.c | 2 src/openvz_driver.c | 2 src/qemu_conf.c | 25 ++--- src/qemu_conf.h | 3 src/qemu_driver.c | 127 +++++++++++++++++++++++++++++ src/remote_internal.c | 64 ++++++++++++++ src/test.c | 2 src/uml_driver.c | 2 src/virsh.c | 94 ++++++++++++++++++++++ src/xen_unified.c | 93 +++++++++++++++++++++ src/xen_unified.h | 3 28 files changed, 853 insertions(+), 70 deletions(-) Daniel diff -r ba47cd6949a4 docs/devhelp/libvirt-libvirt.html --- a/docs/devhelp/libvirt-libvirt.html Thu Apr 16 12:44:17 2009 +0100 +++ b/docs/devhelp/libvirt-libvirt.html Fri Apr 17 10:22:22 2009 +0100 @@ -126,6 +126,7 @@ int <a href="#virNodeDeviceDettach">virN int <a href="#virDomainGetSecurityLabel">virDomainGetSecurityLabel</a> (<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/> <a href="libvirt-libvirt.html#virSecurityLabelPtr">virSecurityLabelPtr</a> seclabel); int <a href="#virConnectDomainEventDeregister">virConnectDomainEventDeregister</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> <a href="libvirt-libvirt.html#virConnectDomainEventCallback">virConnectDomainEventCallback</a> cb); int <a href="#virDomainGetSchedulerParameters">virDomainGetSchedulerParameters</a> (<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/> <a href="libvirt-libvirt.html#virSchedParameterPtr">virSchedParameterPtr</a> params, <br/> int * nparams); +char * <a href="#virConnectImportDomainXML">virConnectImportDomainXML</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * format, <br/> const char * config, <br/> unsigned int flags); <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> <a href="#virDomainLookupByUUIDString">virDomainLookupByUUIDString</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * uuidstr); int <a href="#virConnectNumOfDefinedNetworks">virConnectNumOfDefinedNetworks</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn); int <a href="#virConnectNumOfDomains">virConnectNumOfDomains</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn); @@ -218,7 +219,7 @@ int <a href="#virDomainResume">virDomain int <a href="#virNodeListDevices">virNodeListDevices</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * cap, <br/> char ** const names, <br/> int maxnames, <br/> unsigned int flags); int <a href="#virNetworkRef">virNetworkRef</a> (<a href="libvirt-libvirt.html#virNetworkPtr">virNetworkPtr</a> network); int <a href="#virStoragePoolRefresh">virStoragePoolRefresh</a> (<a href="libvirt-libvirt.html#virStoragePoolPtr">virStoragePoolPtr</a> pool, <br/> unsigned int flags); -int <a href="#virConnectNumOfDefinedDomains">virConnectNumOfDefinedDomains</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn); +char * <a href="#virConnectExportDomainXML">virConnectExportDomainXML</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * format, <br/> const char * xml, <br/> unsigned int flags); <a href="libvirt-libvirt.html#virStorageVolPtr">virStorageVolPtr</a> <a href="#virStorageVolLookupByKey">virStorageVolLookupByKey</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * key); int <a href="#virDomainUndefine">virDomainUndefine</a> (<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain); int <a href="#virDomainReboot">virDomainReboot</a> (<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/> unsigned int flags); @@ -260,6 +261,7 @@ int <a href="#virConnectNumOfDefinedStor const char * <a href="#virNodeDeviceGetParent">virNodeDeviceGetParent</a> (<a href="libvirt-libvirt.html#virNodeDevicePtr">virNodeDevicePtr</a> dev); <a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> <a href="#virConnectOpen">virConnectOpen</a> (const char * name); <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> <a href="#virDomainCreateXML">virDomainCreateXML</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * xmlDesc, <br/> unsigned int flags); +int <a href="#virConnectNumOfDefinedDomains">virConnectNumOfDefinedDomains</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn); int <a href="#virNodeDeviceRef">virNodeDeviceRef</a> (<a href="libvirt-libvirt.html#virNodeDevicePtr">virNodeDevicePtr</a> dev); int <a href="#virDomainSetVcpus">virDomainSetVcpus</a> (<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain, <br/> unsigned int nvcpus); int <a href="#virDomainRef">virDomainRef</a> (<a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> domain); @@ -792,6 +794,10 @@ The content of this structure is not mad </pre><p>Adds a Domain Event Callback. Registering for a domain callback will enable delivery of the events The <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> object handle passed into the callback upon delivery of an event is only valid for the duration of execution of the callback. If the callback wishes to keep the domain object after the callback</p> <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the connection</td></tr><tr><td><span class="term"><i><tt>cb</tt></i>:</span></td><td>callback to the function handling domain events</td></tr><tr><td><span class="term"><i><tt>opaque</tt></i>:</span></td><td>opaque data to pass on to the callback</td></tr><tr><td><span class="term"><i><tt>freecb</tt></i>:</span></td><td>optional function to deallocate opaque when not used anymore</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>it shall take a reference to it, by calling virDomainRef. The reference can be released once the object is no longer required by calling virDomainFree. Returns 0 on success, -1 on failure</td></tr></tbody></table></div></div> <hr/> + <div class="refsect2" lang="en"><h3><a name="virConnectExportDomainXML"/>virConnectExportDomainXML ()</h3><pre class="programlisting">char * virConnectExportDomainXML (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * format, <br/> const char * xml, <br/> unsigned int flags)<br/> +</pre><p>Reads a domain XML configuration document, and generates generates a native configuration file describing the domain. The format of the native data is hypervisor dependant.</p> +<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>a connection object</td></tr><tr><td><span class="term"><i><tt>format</tt></i>:</span></td><td>configuration format exporting to</td></tr><tr><td><span class="term"><i><tt>xml</tt></i>:</span></td><td>the domain configuration to export</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>currently unused, pass 0</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div></div> + <hr/> <div class="refsect2" lang="en"><h3><a name="virConnectFindStoragePoolSources"/>virConnectFindStoragePoolSources ()</h3><pre class="programlisting">char * virConnectFindStoragePoolSources (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * type, <br/> const char * srcSpec, <br/> unsigned int flags)<br/> </pre><p>Talks to a storage backend and attempts to auto-discover the set of available storage pool sources. e.g. For iSCSI this would be a set of iSCSI targets. For NFS this would be a list of exported paths. The srcSpec (optional for some storage pool types, e.g. local ones) is an instance of the storage pool's source element specifying where to look for the pools. srcSpec is not required for some types (e.g., those querying local storage resources only)</p> <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to hypervisor connection</td></tr><tr><td><span class="term"><i><tt>type</tt></i>:</span></td><td>type of storage pool sources to discover</td></tr><tr><td><span class="term"><i><tt>srcSpec</tt></i>:</span></td><td>XML document specifying discovery source</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>flags for discovery (unused, pass 0)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>an xml document consisting of a SourceList element containing a source document appropriate to the given pool type for each discovered source.</td></tr></tbody></table></div></div> @@ -820,6 +826,10 @@ The content of this structure is not mad </pre><p>Get the version level of the Hypervisor running. This may work only with hypervisor call, i.e. with privileged access to the hypervisor, not with a Read-Only connection.</p> <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>hvVer</tt></i>:</span></td><td>return value for the version of the running hypervisor (OUT)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 otherwise. if the version can't be extracted by lack of capacities returns 0 and @hvVer is 0, otherwise @hvVer value is major * 1,000,000 + minor * 1,000 + release</td></tr></tbody></table></div></div> <hr/> + <div class="refsect2" lang="en"><h3><a name="virConnectImportDomainXML"/>virConnectImportDomainXML ()</h3><pre class="programlisting">char * virConnectImportDomainXML (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> const char * format, <br/> const char * config, <br/> unsigned int flags)<br/> +</pre><p>Reads native configuration data describing a domain, and generates libvirt domain XML. The format of the native data is hypervisor dependant.</p> +<div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>a connection object</td></tr><tr><td><span class="term"><i><tt>format</tt></i>:</span></td><td>configuration format importing from</td></tr><tr><td><span class="term"><i><tt>config</tt></i>:</span></td><td>the configuration data to import</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>currently unused, pass 0</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div></div> + <hr/> <div class="refsect2" lang="en"><h3><a name="virConnectListDefinedDomains"/>virConnectListDefinedDomains ()</h3><pre class="programlisting">int virConnectListDefinedDomains (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br/> char ** const names, <br/> int maxnames)<br/> </pre><p>list the defined but inactive domains, stores the pointers to the names in @names</p> <div class="variablelist"><table border="0"><col align="left"/><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>pointer to an array to store the names</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of the array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of names provided in the array or -1 in case of error</td></tr></tbody></table></div></div> diff -r ba47cd6949a4 docs/html/libvirt-libvirt.html --- a/docs/html/libvirt-libvirt.html Thu Apr 16 12:44:17 2009 +0100 +++ b/docs/html/libvirt-libvirt.html Fri Apr 17 10:22:22 2009 +0100 @@ -84,6 +84,7 @@ int <a href="#virConnectDomainEventCallb int <a href="#virConnectDomainEventDeregister">virConnectDomainEventDeregister</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> <a href="libvirt-libvirt.html#virConnectDomainEventCallback">virConnectDomainEventCallback</a> cb) int <a href="#virConnectDomainEventRegister">virConnectDomainEventRegister</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> <a href="libvirt-libvirt.html#virConnectDomainEventCallback">virConnectDomainEventCallback</a> cb, <br /> void * opaque, <br /> <a href="libvirt-libvirt.html#virFreeCallback">virFreeCallback</a> freecb) +char * <a href="#virConnectExportDomainXML">virConnectExportDomainXML</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * format, <br /> const char * xml, <br /> unsigned int flags) char * <a href="#virConnectFindStoragePoolSources">virConnectFindStoragePoolSources</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * type, <br /> const char * srcSpec, <br /> unsigned int flags) char * <a href="#virConnectGetCapabilities">virConnectGetCapabilities</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn) char * <a href="#virConnectGetHostname">virConnectGetHostname</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn) @@ -91,6 +92,7 @@ int <a href="#virConnectGetMaxVcpus">vir const char * <a href="#virConnectGetType">virConnectGetType</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn) char * <a href="#virConnectGetURI">virConnectGetURI</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn) int <a href="#virConnectGetVersion">virConnectGetVersion</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> unsigned long * hvVer) +char * <a href="#virConnectImportDomainXML">virConnectImportDomainXML</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * format, <br /> const char * config, <br /> unsigned int flags) int <a href="#virConnectListDefinedDomains">virConnectListDefinedDomains</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames) int <a href="#virConnectListDefinedNetworks">virConnectListDefinedNetworks</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames) int <a href="#virConnectListDefinedStoragePools">virConnectListDefinedStoragePools</a> (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames) @@ -359,14 +361,16 @@ int <a href="#virStorageVolRef">virStora </pre><p>This function closes the connection to the Hypervisor. This should not be called if further interaction with the Hypervisor are needed especially if there is running domain which need further monitoring by the application.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 in case of success or -1 in case of error.</td></tr></tbody></table></div><h3><a name="virConnectDomainEventCallback" id="virConnectDomainEventCallback"><code>virConnectDomainEventCallback</code></a></h3><pre class="programlisting">typedef int (*virConnectDomainEventCallback) (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> dom, <br /> int event, <br /> int detail, <br /> void * opaque) </pre><p>A callback function to be registered, and called when a domain event occurs</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td><a href="libvirt-libvirt.html#virConnect">virConnect</a> connection</td></tr><tr><td><span class="term"><i><tt>dom</tt></i>:</span></td><td>The domain on which the event occured</td></tr><tr><td><span class="term"><i><tt>event</tt></i>:</span></td><td>The specfic <a href="libvirt-libvirt.html#virDomainEventType">virDomainEventType</a> which occured</td></tr><tr><td><span class="term"><i><tt>detail</tt></i>:</span></td><td>event specific detail information</td></tr><tr><td><span class="term"><i><tt>opaque</tt></i>:</span></td><td>opaque user data</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td></td></tr></tbody></table></div><br /><h3><a name="virConnectDomainEventDeregister" id="virConnectDomainEventDeregister"><code>virConnectDomainEventDeregister</code></a></h3><pre class="programlisting">int virConnectDomainEventDeregister (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> <a href="libvirt-libvirt.html#virConnectDomainEventCallback">virConnectDomainEventCallback</a> cb)<br /> </pre><p>Removes a Domain Event Callback. De-registering for a domain callback will disable delivery of this event type</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the connection</td></tr><tr><td><span class="term"><i><tt>cb</tt></i>:</span></td><td>callback to the function handling domain events</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success, -1 on failure</td></tr></tbody></table></div><h3><a name="virConnectDomainEventRegister" id="virConnectDomainEventRegister"><code>virConnectDomainEventRegister</code></a></h3><pre class="programlisting">int virConnectDomainEventRegister (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> <a href="libvirt-libvirt.html#virConnectDomainEventCallback">virConnectDomainEventCallback</a> cb, <br /> void * opaque, <br /> <a href="libvirt-libvirt.html#virFreeCallback">virFreeCallback</a> freecb)<br /> -</pre><p>Adds a Domain Event Callback. Registering for a domain callback will enable delivery of the events The <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> object handle passed into the callback upon delivery of an event is only valid for the duration of execution of the callback. If the callback wishes to keep the domain object after the callback</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the connection</td></tr><tr><td><span class="term"><i><tt>cb</tt></i>:</span></td><td>callback to the function handling domain events</td></tr><tr><td><span class="term"><i><tt>opaque</tt></i>:</span></td><td>opaque data to pass on to the callback</td></tr><tr><td><span class="term"><i><tt>freecb</tt></i>:</span></td><td>optional function to deallocate opaque when not used anymore</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>it shall take a reference to it, by calling virDomainRef. The reference can be released once the object is no longer required by calling virDomainFree. Returns 0 on success, -1 on failure</td></tr></tbody></table></div><h3><a name="virConnectFindStoragePoolSources" id="virConnectFindStoragePoolSources"><code>virConnectFindStoragePoolSources</code></a></h3><pre class="programlisting">char * virConnectFindStoragePoolSources (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * type, <br /> const char * srcSpec, <br /> unsigned int flags)<br /> +</pre><p>Adds a Domain Event Callback. Registering for a domain callback will enable delivery of the events The <a href="libvirt-libvirt.html#virDomainPtr">virDomainPtr</a> object handle passed into the callback upon delivery of an event is only valid for the duration of execution of the callback. If the callback wishes to keep the domain object after the callback</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the connection</td></tr><tr><td><span class="term"><i><tt>cb</tt></i>:</span></td><td>callback to the function handling domain events</td></tr><tr><td><span class="term"><i><tt>opaque</tt></i>:</span></td><td>opaque data to pass on to the callback</td></tr><tr><td><span class="term"><i><tt>freecb</tt></i>:</span></td><td>optional function to deallocate opaque when not used anymore</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>it shall take a reference to it, by calling virDomainRef. The reference can be released once the object is no longer required by calling virDomainFree. Returns 0 on success, -1 on failure</td></tr></tbody></table></div><h3><a name="virConnectExportDomainXML" id="virConnectExportDomainXML"><code>virConnectExportDomainXML</code></a></h3><pre class="programlisting">char * virConnectExportDomainXML (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * format, <br /> const char * xml, <br /> unsigned int flags)<br /> +</pre><p>Reads a domain XML configuration document, and generates generates a native configuration file describing the domain. The format of the native data is hypervisor dependant.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>a connection object</td></tr><tr><td><span class="term"><i><tt>format</tt></i>:</span></td><td>configuration format exporting to</td></tr><tr><td><span class="term"><i><tt>xml</tt></i>:</span></td><td>the domain configuration to export</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>currently unused, pass 0</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div><h3><a name="virConnectFindStoragePoolSources" id="virConnectFindStoragePoolSources"><code>virConnectFindStoragePoolSources</code></a></h3><pre class="programlisting">char * virConnectFindStoragePoolSources (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * type, <br /> const char * srcSpec, <br /> unsigned int flags)<br /> </pre><p>Talks to a storage backend and attempts to auto-discover the set of available storage pool sources. e.g. For iSCSI this would be a set of iSCSI targets. For NFS this would be a list of exported paths. The srcSpec (optional for some storage pool types, e.g. local ones) is an instance of the storage pool's source element specifying where to look for the pools. srcSpec is not required for some types (e.g., those querying local storage resources only)</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to hypervisor connection</td></tr><tr><td><span class="term"><i><tt>type</tt></i>:</span></td><td>type of storage pool sources to discover</td></tr><tr><td><span class="term"><i><tt>srcSpec</tt></i>:</span></td><td>XML document specifying discovery source</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>flags for discovery (unused, pass 0)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>an xml document consisting of a SourceList element containing a source document appropriate to the given pool type for each discovered source.</td></tr></tbody></table></div><h3><a name="virConnectGetCapabilities" id="virConnectGetCapabilities"><code>virConnectGetCapabilities</code></a></h3><pre class="programlisting">char * virConnectGetCapabilities (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br /> </pre><p>Provides capabilities of the hypervisor / driver.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error, or an XML string defining the capabilities. The client must free the returned string after use.</td></tr></tbody></table></div><h3><a name="virConnectGetHostname" id="virConnectGetHostname"><code>virConnectGetHostname</code></a></h3><pre class="programlisting">char * virConnectGetHostname (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br /> </pre><p>This returns the system hostname on which the hypervisor is running (the result of the gethostname(2) system call). If we are connected to a remote system, then this returns the hostname of the remote system.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to a hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the hostname which must be freed by the caller, or NULL if there was an error.</td></tr></tbody></table></div><h3><a name="virConnectGetMaxVcpus" id="virConnectGetMaxVcpus"><code>virConnectGetMaxVcpus</code></a></h3><pre class="programlisting">int virConnectGetMaxVcpus (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * type)<br /> </pre><p>Provides the maximum number of virtual CPUs supported for a guest VM of a specific type. The 'type' parameter here corresponds to the 'type' attribute in the <domain> element of the XML.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>type</tt></i>:</span></td><td>value of the 'type' attribute in the <domain> element</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the maximum of virtual CPU or -1 in case of error.</td></tr></tbody></table></div><h3><a name="virConnectGetType" id="virConnectGetType"><code>virConnectGetType</code></a></h3><pre class="programlisting">const char * virConnectGetType (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br /> </pre><p>Get the name of the Hypervisor software used.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>NULL in case of error, a static zero terminated string otherwise. See also: http://www.redhat.com/archives/libvir-list/2007-February/msg00096.html</td></tr></tbody></table></div><h3><a name="virConnectGetURI" id="virConnectGetURI"><code>virConnectGetURI</code></a></h3><pre class="programlisting">char * virConnectGetURI (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn)<br /> </pre><p>This returns the URI (name) of the hypervisor connection. Normally this is the same as or similar to the string passed to the virConnectOpen/virConnectOpenReadOnly call, but the driver may make the URI canonical. If name == NULL was passed to virConnectOpen, then the driver will return a non-NULL URI which can be used to connect to the same hypervisor later.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to a hypervisor connection</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the URI string which must be freed by the caller, or NULL if there was an error.</td></tr></tbody></table></div><h3><a name="virConnectGetVersion" id="virConnectGetVersion"><code>virConnectGetVersion</code></a></h3><pre class="programlisting">int virConnectGetVersion (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> unsigned long * hvVer)<br /> -</pre><p>Get the version level of the Hypervisor running. This may work only with hypervisor call, i.e. with privileged access to the hypervisor, not with a Read-Only connection.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>hvVer</tt></i>:</span></td><td>return value for the version of the running hypervisor (OUT)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 otherwise. if the version can't be extracted by lack of capacities returns 0 and @hvVer is 0, otherwise @hvVer value is major * 1,000,000 + minor * 1,000 + release</td></tr></tbody></table></div><h3><a name="virConnectListDefinedDomains" id="virConnectListDefinedDomains"><code>virConnectListDefinedDomains</code></a></h3><pre class="programlisting">int virConnectListDefinedDomains (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames)<br /> +</pre><p>Get the version level of the Hypervisor running. This may work only with hypervisor call, i.e. with privileged access to the hypervisor, not with a Read-Only connection.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>hvVer</tt></i>:</span></td><td>return value for the version of the running hypervisor (OUT)</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>-1 in case of error, 0 otherwise. if the version can't be extracted by lack of capacities returns 0 and @hvVer is 0, otherwise @hvVer value is major * 1,000,000 + minor * 1,000 + release</td></tr></tbody></table></div><h3><a name="virConnectImportDomainXML" id="virConnectImportDomainXML"><code>virConnectImportDomainXML</code></a></h3><pre class="programlisting">char * virConnectImportDomainXML (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> const char * format, <br /> const char * config, <br /> unsigned int flags)<br /> +</pre><p>Reads native configuration data describing a domain, and generates libvirt domain XML. The format of the native data is hypervisor dependant.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>a connection object</td></tr><tr><td><span class="term"><i><tt>format</tt></i>:</span></td><td>configuration format importing from</td></tr><tr><td><span class="term"><i><tt>config</tt></i>:</span></td><td>the configuration data to import</td></tr><tr><td><span class="term"><i><tt>flags</tt></i>:</span></td><td>currently unused, pass 0</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.</td></tr></tbody></table></div><h3><a name="virConnectListDefinedDomains" id="virConnectListDefinedDomains"><code>virConnectListDefinedDomains</code></a></h3><pre class="programlisting">int virConnectListDefinedDomains (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames)<br /> </pre><p>list the defined but inactive domains, stores the pointers to the names in @names</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>pointer to an array to store the names</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of the array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of names provided in the array or -1 in case of error</td></tr></tbody></table></div><h3><a name="virConnectListDefinedNetworks" id="virConnectListDefinedNetworks"><code>virConnectListDefinedNetworks</code></a></h3><pre class="programlisting">int virConnectListDefinedNetworks (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames)<br /> </pre><p>list the inactive networks, stores the pointers to the names in @names</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to the hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>pointer to an array to store the names</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of the array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>the number of names provided in the array or -1 in case of error</td></tr></tbody></table></div><h3><a name="virConnectListDefinedStoragePools" id="virConnectListDefinedStoragePools"><code>virConnectListDefinedStoragePools</code></a></h3><pre class="programlisting">int virConnectListDefinedStoragePools (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> char ** const names, <br /> int maxnames)<br /> </pre><p>Provides the list of names of inactive storage pools upto maxnames. If there are more than maxnames, the remaining names will be silently ignored.</p><div class="variablelist"><table border="0"><col align="left" /><tbody><tr><td><span class="term"><i><tt>conn</tt></i>:</span></td><td>pointer to hypervisor connection</td></tr><tr><td><span class="term"><i><tt>names</tt></i>:</span></td><td>array of char * to fill with pool names (allocated by caller)</td></tr><tr><td><span class="term"><i><tt>maxnames</tt></i>:</span></td><td>size of the names array</td></tr><tr><td><span class="term"><i><tt>Returns</tt></i>:</span></td><td>0 on success, -1 on error</td></tr></tbody></table></div><h3><a name="virConnectListDomains" id="virConnectListDomains"><code>virConnectListDomains</code></a></h3><pre class="programlisting">int virConnectListDomains (<a href="libvirt-libvirt.html#virConnectPtr">virConnectPtr</a> conn, <br /> int * ids, <br /> int maxids)<br /> diff -r ba47cd6949a4 docs/libvirt-api.xml --- a/docs/libvirt-api.xml Thu Apr 16 12:44:17 2009 +0100 +++ b/docs/libvirt-api.xml Fri Apr 17 10:22:22 2009 +0100 @@ -176,6 +176,7 @@ <exports symbol='virDomainGetSecurityLabel' type='function'/> <exports symbol='virConnectDomainEventDeregister' type='function'/> <exports symbol='virDomainGetSchedulerParameters' type='function'/> + <exports symbol='virConnectImportDomainXML' type='function'/> <exports symbol='virDomainLookupByUUIDString' type='function'/> <exports symbol='virConnectNumOfDefinedNetworks' type='function'/> <exports symbol='virConnectNumOfDomains' type='function'/> @@ -268,7 +269,7 @@ <exports symbol='virNodeListDevices' type='function'/> <exports symbol='virNetworkRef' type='function'/> <exports symbol='virStoragePoolRefresh' type='function'/> - <exports symbol='virConnectNumOfDefinedDomains' type='function'/> + <exports symbol='virConnectExportDomainXML' type='function'/> <exports symbol='virStorageVolLookupByKey' type='function'/> <exports symbol='virDomainUndefine' type='function'/> <exports symbol='virDomainReboot' type='function'/> @@ -310,6 +311,7 @@ <exports symbol='virNodeDeviceGetParent' type='function'/> <exports symbol='virConnectOpen' type='function'/> <exports symbol='virDomainCreateXML' type='function'/> + <exports symbol='virConnectNumOfDefinedDomains' type='function'/> <exports symbol='virNodeDeviceRef' type='function'/> <exports symbol='virDomainSetVcpus' type='function'/> <exports symbol='virDomainRef' type='function'/> @@ -864,6 +866,14 @@ see note above'/> <arg name='opaque' type='void *' info='opaque data to pass on to the callback'/> <arg name='freecb' type='virFreeCallback' info='optional function to deallocate opaque when not used anymore'/> </function> + <function name='virConnectExportDomainXML' file='libvirt' module='libvirt'> + <info>Reads a domain XML configuration document, and generates generates a native configuration file describing the domain. The format of the native data is hypervisor dependant.</info> + <return type='char *' info='a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error. the caller must free() the returned value.'/> + <arg name='conn' type='virConnectPtr' info='a connection object'/> + <arg name='format' type='const char *' info='configuration format exporting to'/> + <arg name='xml' type='const char *' info='the domain configuration to export'/> + <arg name='flags' type='unsigned int' info='currently unused, pass 0'/> + </function> <function name='virConnectFindStoragePoolSources' file='libvirt' module='libvirt'> <info>Talks to a storage backend and attempts to auto-discover the set of available storage pool sources. e.g. For iSCSI this would be a set of iSCSI targets. For NFS this would be a list of exported paths. The srcSpec (optional for some storage pool types, e.g. local ones) is an instance of the storage pool's source element specifying where to look for the pools. srcSpec is not required for some types (e.g., those querying local storage resources only)</info> <return type='char *' info='an xml document consisting of a SourceList element containing a source document appropriate to the given pool type for each discovered source.'/> @@ -904,6 +914,14 @@ see note above'/> <arg name='conn' type='virConnectPtr' info='pointer to the hypervisor connection'/> <arg name='hvVer' type='unsigned long *' info='return value for the version of the running hypervisor (OUT)'/> </function> + <function name='virConnectImportDomainXML' file='libvirt' module='libvirt'> + <info>Reads native configuration data describing a domain, and generates libvirt domain XML. The format of the native data is hypervisor dependant.</info> + <return type='char *' info='a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. the caller must free() the returned value.'/> + <arg name='conn' type='virConnectPtr' info='a connection object'/> + <arg name='format' type='const char *' info='configuration format importing from'/> + <arg name='config' type='const char *' info='the configuration data to import'/> + <arg name='flags' type='unsigned int' info='currently unused, pass 0'/> + </function> <function name='virConnectListDefinedDomains' file='libvirt' module='libvirt'> <info>list the defined but inactive domains, stores the pointers to the names in @names</info> <return type='int' info='the number of names provided in the array or -1 in case of error'/> diff -r ba47cd6949a4 docs/libvirt-refs.xml --- a/docs/libvirt-refs.xml Thu Apr 16 12:44:17 2009 +0100 +++ b/docs/libvirt-refs.xml Fri Apr 17 10:22:22 2009 +0100 @@ -197,6 +197,7 @@ <reference name='virConnectDomainEventCallback' href='html/libvirt-libvirt.html#virConnectDomainEventCallback'/> <reference name='virConnectDomainEventDeregister' href='html/libvirt-libvirt.html#virConnectDomainEventDeregister'/> <reference name='virConnectDomainEventRegister' href='html/libvirt-libvirt.html#virConnectDomainEventRegister'/> + <reference name='virConnectExportDomainXML' href='html/libvirt-libvirt.html#virConnectExportDomainXML'/> <reference name='virConnectFindStoragePoolSources' href='html/libvirt-libvirt.html#virConnectFindStoragePoolSources'/> <reference name='virConnectFlags' href='html/libvirt-libvirt.html#virConnectFlags'/> <reference name='virConnectGetCapabilities' href='html/libvirt-libvirt.html#virConnectGetCapabilities'/> @@ -205,6 +206,7 @@ <reference name='virConnectGetType' href='html/libvirt-libvirt.html#virConnectGetType'/> <reference name='virConnectGetURI' href='html/libvirt-libvirt.html#virConnectGetURI'/> <reference name='virConnectGetVersion' href='html/libvirt-libvirt.html#virConnectGetVersion'/> + <reference name='virConnectImportDomainXML' href='html/libvirt-libvirt.html#virConnectImportDomainXML'/> <reference name='virConnectListDefinedDomains' href='html/libvirt-libvirt.html#virConnectListDefinedDomains'/> <reference name='virConnectListDefinedNetworks' href='html/libvirt-libvirt.html#virConnectListDefinedNetworks'/> <reference name='virConnectListDefinedStoragePools' href='html/libvirt-libvirt.html#virConnectListDefinedStoragePools'/> @@ -622,6 +624,7 @@ <ref name='virConnectDomainEventCallback'/> <ref name='virConnectDomainEventDeregister'/> <ref name='virConnectDomainEventRegister'/> + <ref name='virConnectExportDomainXML'/> <ref name='virConnectFindStoragePoolSources'/> <ref name='virConnectFlags'/> <ref name='virConnectGetCapabilities'/> @@ -630,6 +633,7 @@ <ref name='virConnectGetType'/> <ref name='virConnectGetURI'/> <ref name='virConnectGetVersion'/> + <ref name='virConnectImportDomainXML'/> <ref name='virConnectListDefinedDomains'/> <ref name='virConnectListDefinedNetworks'/> <ref name='virConnectListDefinedStoragePools'/> @@ -942,7 +946,9 @@ </type> <type name='unsigned int'> <ref name='virConnectAuthCallbackPtr'/> + <ref name='virConnectExportDomainXML'/> <ref name='virConnectFindStoragePoolSources'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainCreateLinux'/> <ref name='virDomainCreateXML'/> @@ -999,6 +1005,7 @@ <ref name='virConnectDomainEventCallback'/> <ref name='virConnectDomainEventDeregister'/> <ref name='virConnectDomainEventRegister'/> + <ref name='virConnectExportDomainXML'/> <ref name='virConnectFindStoragePoolSources'/> <ref name='virConnectGetCapabilities'/> <ref name='virConnectGetHostname'/> @@ -1006,6 +1013,7 @@ <ref name='virConnectGetType'/> <ref name='virConnectGetURI'/> <ref name='virConnectGetVersion'/> + <ref name='virConnectImportDomainXML'/> <ref name='virConnectListDefinedDomains'/> <ref name='virConnectListDefinedNetworks'/> <ref name='virConnectListDefinedStoragePools'/> @@ -1349,6 +1357,7 @@ <ref name='virConnectDomainEventCallback'/> <ref name='virConnectDomainEventDeregister'/> <ref name='virConnectDomainEventRegister'/> + <ref name='virConnectExportDomainXML'/> <ref name='virConnectFindStoragePoolSources'/> <ref name='virConnectFlags'/> <ref name='virConnectGetCapabilities'/> @@ -1357,6 +1366,7 @@ <ref name='virConnectGetType'/> <ref name='virConnectGetURI'/> <ref name='virConnectGetVersion'/> + <ref name='virConnectImportDomainXML'/> <ref name='virConnectListDefinedDomains'/> <ref name='virConnectListDefinedNetworks'/> <ref name='virConnectListDefinedStoragePools'/> @@ -2162,6 +2172,10 @@ <word name='Read-Only'> <ref name='virConnectGetVersion'/> </word> + <word name='Reads'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> + </word> <word name='Reboot'> <ref name='virDomainReboot'/> </word> @@ -2294,6 +2308,8 @@ <ref name='VIR_USE_CPU'/> </word> <word name='UTF-8'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainDefineXML'/> <ref name='virDomainGetXMLDesc'/> <ref name='virNetworkDefineXML'/> @@ -2381,26 +2397,6 @@ </word> </letter> <letter name='X'> - <word name='XML'> - <ref name='virConnectFindStoragePoolSources'/> - <ref name='virConnectGetCapabilities'/> - <ref name='virConnectGetMaxVcpus'/> - <ref name='virDomainAttachDevice'/> - <ref name='virDomainCreateLinux'/> - <ref name='virDomainCreateXML'/> - <ref name='virDomainDefineXML'/> - <ref name='virDomainDetachDevice'/> - <ref name='virDomainGetXMLDesc'/> - <ref name='virNetworkCreateXML'/> - <ref name='virNetworkDefineXML'/> - <ref name='virNetworkGetXMLDesc'/> - <ref name='virNodeDeviceGetXMLDesc'/> - <ref name='virStoragePoolCreateXML'/> - <ref name='virStoragePoolDefineXML'/> - <ref name='virStoragePoolGetXMLDesc'/> - <ref name='virStorageVolCreateXML'/> - <ref name='virStorageVolGetXMLDesc'/> - </word> <word name='Xen'> <ref name='_virDomainBlockStats'/> <ref name='virDomainCoreDump'/> @@ -2902,8 +2898,10 @@ </word> <word name='caller'> <ref name='cpumap'/> - <ref name='virConnectGetHostname'/> - <ref name='virConnectGetURI'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectGetHostname'/> + <ref name='virConnectGetURI'/> + <ref name='virConnectImportDomainXML'/> <ref name='virConnectListDefinedStoragePools'/> <ref name='virConnectListStoragePools'/> <ref name='virConnectRef'/> @@ -3074,9 +3072,12 @@ <ref name='virResetLastError'/> </word> <word name='config'> + <ref name='virConnectExportDomainXML'/> <ref name='virStoragePoolDestroy'/> </word> <word name='configuration'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> <ref name='virStorageVolGetPath'/> </word> <word name='configured'> @@ -3224,6 +3225,8 @@ <ref name='virStorageVolGetInfo'/> </word> <word name='currently'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainCoreDump'/> <ref name='virNodeDeviceReAttach'/> <ref name='virNodeDeviceReset'/> @@ -3237,16 +3240,21 @@ <ref name='virConnSetErrorFunc'/> <ref name='virConnectDomainEventCallback'/> <ref name='virConnectDomainEventRegister'/> - <ref name='virDomainFree'/> - <ref name='virErrorFunc'/> - <ref name='virEventAddHandleFunc'/> - <ref name='virEventAddTimeoutFunc'/> - <ref name='virEventHandleCallback'/> - <ref name='virEventRemoveHandleFunc'/> - <ref name='virEventRemoveTimeoutFunc'/> - <ref name='virEventTimeoutCallback'/> - <ref name='virNetworkFree'/> - <ref name='virSetErrorFunc'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> + <ref name='virDomainFree'/> + <ref name='virErrorFunc'/> + <ref name='virEventAddHandleFunc'/> + <ref name='virEventAddTimeoutFunc'/> + <ref name='virEventHandleCallback'/> + <ref name='virEventRemoveHandleFunc'/> + <ref name='virEventRemoveTimeoutFunc'/> + <ref name='virEventTimeoutCallback'/> + <ref name='virNetworkFree'/> + <ref name='virSetErrorFunc'/> + </word> + <word name='datafile'> + <ref name='virConnectExportDomainXML'/> </word> <word name='dconn'> <ref name='virDomainMigrate'/> @@ -3297,6 +3305,10 @@ <ref name='virConnectDomainEventDeregister'/> <ref name='virConnectDomainEventRegister'/> </word> + <word name='dependant'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> + </word> <word name='depends'> <ref name='virNodeDeviceReset'/> </word> @@ -3307,6 +3319,8 @@ <ref name='virDomainGetVcpus'/> </word> <word name='describing'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> <ref name='virNodeDeviceGetXMLDesc'/> <ref name='virStoragePoolGetXMLDesc'/> <ref name='virStorageVolGetXMLDesc'/> @@ -3406,6 +3420,7 @@ <ref name='virDomainShutdown'/> </word> <word name='document'> + <ref name='virConnectExportDomainXML'/> <ref name='virConnectFindStoragePoolSources'/> <ref name='virNodeDeviceGetXMLDesc'/> <ref name='virStoragePoolGetXMLDesc'/> @@ -3521,6 +3536,8 @@ <ref name='virConnectDomainEventRegister'/> </word> <word name='encoded'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainGetXMLDesc'/> <ref name='virNetworkGetXMLDesc'/> </word> @@ -3594,9 +3611,15 @@ <ref name='virDomainDefineXML'/> <ref name='virStoragePoolDefineXML'/> </word> + <word name='export'> + <ref name='virConnectExportDomainXML'/> + </word> <word name='exported'> <ref name='virConnectFindStoragePoolSources'/> </word> + <word name='exporting'> + <ref name='virConnectExportDomainXML'/> + </word> <word name='extra'> <ref name='_virError'/> <ref name='virDomainCoreDump'/> @@ -3658,6 +3681,7 @@ <ref name='virDomainInterfaceStats'/> </word> <word name='file'> + <ref name='virConnectExportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainCoreDump'/> <ref name='virDomainSave'/> @@ -3738,6 +3762,8 @@ <ref name='virDomainMigrate'/> </word> <word name='format'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainGetVcpus'/> <ref name='virGetVersion'/> <ref name='virStoragePoolGetXMLDesc'/> @@ -3773,7 +3799,9 @@ <word name='free'> <ref name='_virStoragePoolInfo'/> <ref name='virConnCopyLastError'/> - <ref name='virConnectGetCapabilities'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectGetCapabilities'/> + <ref name='virConnectImportDomainXML'/> <ref name='virCopyLastError'/> <ref name='virDomainDestroy'/> <ref name='virDomainGetSchedulerType'/> @@ -3817,6 +3845,7 @@ <ref name='_virVcpuInfo'/> <ref name='virConnCopyLastError'/> <ref name='virConnGetLastError'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainCreate'/> <ref name='virDomainGetVcpus'/> @@ -3855,6 +3884,10 @@ <word name='general'> <ref name='virDomainShutdown'/> </word> + <word name='generates'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> + </word> <word name='generation'> <ref name='virNodeDeviceGetXMLDesc'/> <ref name='virStorageVolGetXMLDesc'/> @@ -4049,6 +4082,12 @@ <word name='image'> <ref name='virDomainMemoryPeek'/> </word> + <word name='import'> + <ref name='virConnectImportDomainXML'/> + </word> + <word name='importing'> + <ref name='virConnectImportDomainXML'/> + </word> <word name='imposed'> <ref name='virDomainMigrate'/> </word> @@ -4139,6 +4178,7 @@ <word name='instance'> <ref name='nodeinfo'/> <ref name='virConnectFindStoragePoolSources'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainDestroy'/> <ref name='virDomainFree'/> <ref name='virDomainGetXMLDesc'/> @@ -4349,6 +4389,7 @@ <ref name='virConnectGetType'/> </word> <word name='libvirt'> + <ref name='virConnectImportDomainXML'/> <ref name='virConnectOpen'/> <ref name='virConnectOpenAuth'/> <ref name='virConnectOpenReadOnly'/> @@ -4662,9 +4703,11 @@ </word> <word name='must'> <ref name='cpumap'/> - <ref name='virConnectGetCapabilities'/> - <ref name='virConnectGetHostname'/> - <ref name='virConnectGetURI'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectGetCapabilities'/> + <ref name='virConnectGetHostname'/> + <ref name='virConnectGetURI'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainGetOSType'/> <ref name='virDomainGetSchedulerType'/> @@ -4700,6 +4743,10 @@ <ref name='_virDomainInfo'/> <ref name='_virVcpuInfo'/> </word> + <word name='native'> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectImportDomainXML'/> + </word> <word name='necessary'> <ref name='VIR_NODEINFO_MAXCPUS'/> <ref name='virConnectOpenAuth'/> @@ -4972,7 +5019,9 @@ <word name='pass'> <ref name='virConnSetErrorFunc'/> <ref name='virConnectDomainEventRegister'/> - <ref name='virConnectFindStoragePoolSources'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectFindStoragePoolSources'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainCreateLinux'/> <ref name='virDomainCreateXML'/> @@ -5402,7 +5451,9 @@ <ref name='virNodeGetCellsFreeMemory'/> </word> <word name='returned'> - <ref name='virConnectGetCapabilities'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectGetCapabilities'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainBlockStats'/> <ref name='virDomainCreateXML'/> @@ -5464,6 +5515,8 @@ <ref name='virDomainSetMemory'/> </word> </letter> + </chunk> + <chunk name='chunk9'> <letter name='s'> <word name='safe'> <ref name='virEventRemoveHandleFunc'/> @@ -5844,7 +5897,7 @@ </word> </letter> </chunk> - <chunk name='chunk9'> + <chunk name='chunk10'> <letter name='t'> <word name='take'> <ref name='virConnectDomainEventRegister'/> @@ -5865,7 +5918,9 @@ <ref name='virDomainMigrate'/> </word> <word name='terminated'> - <ref name='virConnectGetType'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectGetType'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainGetXMLDesc'/> <ref name='virNetworkGetBridgeName'/> <ref name='virNetworkGetXMLDesc'/> @@ -6092,7 +6147,9 @@ <ref name='virStorageVolRef'/> </word> <word name='unused'> - <ref name='virConnectFindStoragePoolSources'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectFindStoragePoolSources'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainBlockPeek'/> <ref name='virDomainCoreDump'/> <ref name='virNodeDeviceGetXMLDesc'/> @@ -6228,7 +6285,7 @@ </word> </letter> </chunk> - <chunk name='chunk10'> + <chunk name='chunk11'> <letter name='v'> <word name='valid'> <ref name='virConnectDomainEventRegister'/> @@ -6237,8 +6294,10 @@ <ref name='VIR_CPU_USABLE'/> <ref name='VIR_SECURITY_LABEL_BUFLEN'/> <ref name='_virVcpuInfo'/> - <ref name='virConnectGetMaxVcpus'/> - <ref name='virConnectGetVersion'/> + <ref name='virConnectExportDomainXML'/> + <ref name='virConnectGetMaxVcpus'/> + <ref name='virConnectGetVersion'/> + <ref name='virConnectImportDomainXML'/> <ref name='virDomainGetAutostart'/> <ref name='virDomainGetSchedulerParameters'/> <ref name='virDomainGetSchedulerType'/> @@ -6633,7 +6692,7 @@ </word> </letter> </chunk> - <chunk name='chunk11'> + <chunk name='chunk12'> <letter name='x'> <word name='xen'> <ref name='virConnectOpen'/> @@ -6679,10 +6738,11 @@ <chunk name='chunk5' start='h' end='k'/> <chunk name='chunk6' start='l' end='m'/> <chunk name='chunk7' start='n' end='p'/> - <chunk name='chunk8' start='q' end='s'/> - <chunk name='chunk9' start='t' end='u'/> - <chunk name='chunk10' start='v' end='w'/> - <chunk name='chunk11' start='x' end='z'/> + <chunk name='chunk8' start='q' end='r'/> + <chunk name='chunk9' start='s' end='s'/> + <chunk name='chunk10' start='t' end='u'/> + <chunk name='chunk11' start='v' end='w'/> + <chunk name='chunk12' start='x' end='z'/> </chunks> </index> </apirefs> diff -r ba47cd6949a4 include/libvirt/libvirt.h --- a/include/libvirt/libvirt.h Thu Apr 16 12:44:17 2009 +0100 +++ b/include/libvirt/libvirt.h Fri Apr 17 10:22:22 2009 +0100 @@ -591,6 +591,16 @@ typedef enum { char * virDomainGetXMLDesc (virDomainPtr domain, int flags); + +char * virConnectImportDomainXML(virConnectPtr conn, + const char *format, + const char *config, + unsigned int flags); +char * virConnectExportDomainXML(virConnectPtr conn, + const char *format, + const char *xml, + unsigned int flags); + int virDomainBlockStats (virDomainPtr dom, const char *path, virDomainBlockStatsPtr stats, diff -r ba47cd6949a4 include/libvirt/libvirt.h.in --- a/include/libvirt/libvirt.h.in Thu Apr 16 12:44:17 2009 +0100 +++ b/include/libvirt/libvirt.h.in Fri Apr 17 10:22:22 2009 +0100 @@ -591,6 +591,16 @@ typedef enum { char * virDomainGetXMLDesc (virDomainPtr domain, int flags); + +char * virConnectImportDomainXML(virConnectPtr conn, + const char *format, + const char *config, + unsigned int flags); +char * virConnectExportDomainXML(virConnectPtr conn, + const char *format, + const char *xml, + unsigned int flags); + int virDomainBlockStats (virDomainPtr dom, const char *path, virDomainBlockStatsPtr stats, diff -r ba47cd6949a4 qemud/remote.c --- a/qemud/remote.c Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote.c Fri Apr 17 10:22:22 2009 +0100 @@ -1236,6 +1236,40 @@ remoteDispatchDomainDumpXml (struct qemu } static int +remoteDispatchImportDomainXml (struct qemud_server *server ATTRIBUTE_UNUSED, + struct qemud_client *client ATTRIBUTE_UNUSED, + virConnectPtr conn, + remote_error *rerr, + remote_import_domain_xml_args *args, + remote_import_domain_xml_ret *ret) +{ + /* remoteDispatchClientRequest will free this. */ + ret->xml = virConnectImportDomainXML (conn, args->format, args->config, args->flags); + if (!ret->xml) { + remoteDispatchConnError(rerr, conn); + return -1; + } + return 0; +} + +static int +remoteDispatchExportDomainXml (struct qemud_server *server ATTRIBUTE_UNUSED, + struct qemud_client *client ATTRIBUTE_UNUSED, + virConnectPtr conn, + remote_error *rerr, + remote_export_domain_xml_args *args, + remote_export_domain_xml_ret *ret) +{ + /* remoteDispatchClientRequest will free this. */ + ret->config = virConnectExportDomainXML (conn, args->format, args->xml, args->flags); + if (!ret->config) { + remoteDispatchConnError(rerr, conn); + return -1; + } + return 0; +} + +static int remoteDispatchDomainGetAutostart (struct qemud_server *server ATTRIBUTE_UNUSED, struct qemud_client *client ATTRIBUTE_UNUSED, virConnectPtr conn, diff -r ba47cd6949a4 qemud/remote_dispatch_args.h --- a/qemud/remote_dispatch_args.h Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_dispatch_args.h Fri Apr 17 10:22:22 2009 +0100 @@ -103,3 +103,5 @@ remote_node_device_re_attach_args val_remote_node_device_re_attach_args; remote_node_device_reset_args val_remote_node_device_reset_args; remote_domain_get_security_label_args val_remote_domain_get_security_label_args; + remote_import_domain_xml_args val_remote_import_domain_xml_args; + remote_export_domain_xml_args val_remote_export_domain_xml_args; diff -r ba47cd6949a4 qemud/remote_dispatch_prototypes.h --- a/qemud/remote_dispatch_prototypes.h Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_dispatch_prototypes.h Fri Apr 17 10:22:22 2009 +0100 @@ -359,6 +359,13 @@ static int remoteDispatchDomainUndefine( remote_error *err, remote_domain_undefine_args *args, void *ret); +static int remoteDispatchExportDomainXml( + struct qemud_server *server, + struct qemud_client *client, + virConnectPtr conn, + remote_error *err, + remote_export_domain_xml_args *args, + remote_export_domain_xml_ret *ret); static int remoteDispatchFindStoragePoolSources( struct qemud_server *server, struct qemud_client *client, @@ -408,6 +415,13 @@ static int remoteDispatchGetVersion( remote_error *err, void *args, remote_get_version_ret *ret); +static int remoteDispatchImportDomainXml( + struct qemud_server *server, + struct qemud_client *client, + virConnectPtr conn, + remote_error *err, + remote_import_domain_xml_args *args, + remote_import_domain_xml_ret *ret); static int remoteDispatchListDefinedDomains( struct qemud_server *server, struct qemud_client *client, diff -r ba47cd6949a4 qemud/remote_dispatch_ret.h --- a/qemud/remote_dispatch_ret.h Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_dispatch_ret.h Fri Apr 17 10:22:22 2009 +0100 @@ -88,3 +88,5 @@ remote_node_device_list_caps_ret val_remote_node_device_list_caps_ret; remote_domain_get_security_label_ret val_remote_domain_get_security_label_ret; remote_node_get_security_model_ret val_remote_node_get_security_model_ret; + remote_import_domain_xml_ret val_remote_import_domain_xml_ret; + remote_export_domain_xml_ret val_remote_export_domain_xml_ret; diff -r ba47cd6949a4 qemud/remote_dispatch_table.h --- a/qemud/remote_dispatch_table.h Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_dispatch_table.h Fri Apr 17 10:22:22 2009 +0100 @@ -607,13 +607,23 @@ .args_filter = (xdrproc_t) xdr_remote_node_device_reset_args, .ret_filter = (xdrproc_t) xdr_void, }, -{ /* DomainGetSecurityLabel => 118 */ +{ /* DomainGetSecurityLabel => 121 */ .fn = (dispatch_fn) remoteDispatchDomainGetSecurityLabel, .args_filter = (xdrproc_t) xdr_remote_domain_get_security_label_args, .ret_filter = (xdrproc_t) xdr_remote_domain_get_security_label_ret, }, -{ /* NodeGetSecurityModel => 119 */ +{ /* NodeGetSecurityModel => 122 */ .fn = (dispatch_fn) remoteDispatchNodeGetSecurityModel, .args_filter = (xdrproc_t) xdr_void, .ret_filter = (xdrproc_t) xdr_remote_node_get_security_model_ret, }, +{ /* ImportDomainXml => 123 */ + .fn = (dispatch_fn) remoteDispatchImportDomainXml, + .args_filter = (xdrproc_t) xdr_remote_import_domain_xml_args, + .ret_filter = (xdrproc_t) xdr_remote_import_domain_xml_ret, +}, +{ /* ExportDomainXml => 124 */ + .fn = (dispatch_fn) remoteDispatchExportDomainXml, + .args_filter = (xdrproc_t) xdr_remote_export_domain_xml_args, + .ret_filter = (xdrproc_t) xdr_remote_export_domain_xml_ret, +}, diff -r ba47cd6949a4 qemud/remote_protocol.c --- a/qemud/remote_protocol.c Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_protocol.c Fri Apr 17 10:22:22 2009 +0100 @@ -2261,6 +2261,50 @@ xdr_remote_domain_event_ret (XDR *xdrs, } bool_t +xdr_remote_import_domain_xml_args (XDR *xdrs, remote_import_domain_xml_args *objp) +{ + + if (!xdr_remote_nonnull_string (xdrs, &objp->format)) + return FALSE; + if (!xdr_remote_nonnull_string (xdrs, &objp->config)) + return FALSE; + if (!xdr_u_int (xdrs, &objp->flags)) + return FALSE; + return TRUE; +} + +bool_t +xdr_remote_import_domain_xml_ret (XDR *xdrs, remote_import_domain_xml_ret *objp) +{ + + if (!xdr_remote_nonnull_string (xdrs, &objp->xml)) + return FALSE; + return TRUE; +} + +bool_t +xdr_remote_export_domain_xml_args (XDR *xdrs, remote_export_domain_xml_args *objp) +{ + + if (!xdr_remote_nonnull_string (xdrs, &objp->format)) + return FALSE; + if (!xdr_remote_nonnull_string (xdrs, &objp->xml)) + return FALSE; + if (!xdr_u_int (xdrs, &objp->flags)) + return FALSE; + return TRUE; +} + +bool_t +xdr_remote_export_domain_xml_ret (XDR *xdrs, remote_export_domain_xml_ret *objp) +{ + + if (!xdr_remote_nonnull_string (xdrs, &objp->config)) + return FALSE; + return TRUE; +} + +bool_t xdr_remote_procedure (XDR *xdrs, remote_procedure *objp) { diff -r ba47cd6949a4 qemud/remote_protocol.h --- a/qemud/remote_protocol.h Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_protocol.h Fri Apr 17 10:22:22 2009 +0100 @@ -1271,6 +1271,30 @@ struct remote_domain_event_ret { int detail; }; typedef struct remote_domain_event_ret remote_domain_event_ret; + +struct remote_import_domain_xml_args { + remote_nonnull_string format; + remote_nonnull_string config; + u_int flags; +}; +typedef struct remote_import_domain_xml_args remote_import_domain_xml_args; + +struct remote_import_domain_xml_ret { + remote_nonnull_string xml; +}; +typedef struct remote_import_domain_xml_ret remote_import_domain_xml_ret; + +struct remote_export_domain_xml_args { + remote_nonnull_string format; + remote_nonnull_string xml; + u_int flags; +}; +typedef struct remote_export_domain_xml_args remote_export_domain_xml_args; + +struct remote_export_domain_xml_ret { + remote_nonnull_string config; +}; +typedef struct remote_export_domain_xml_ret remote_export_domain_xml_ret; #define REMOTE_PROGRAM 0x20008086 #define REMOTE_PROTOCOL_VERSION 1 @@ -1397,6 +1421,8 @@ enum remote_procedure { REMOTE_PROC_NODE_DEVICE_RESET = 120, REMOTE_PROC_DOMAIN_GET_SECURITY_LABEL = 121, REMOTE_PROC_NODE_GET_SECURITY_MODEL = 122, + REMOTE_PROC_IMPORT_DOMAIN_XML = 123, + REMOTE_PROC_EXPORT_DOMAIN_XML = 124, }; typedef enum remote_procedure remote_procedure; @@ -1632,6 +1658,10 @@ extern bool_t xdr_remote_node_device_re extern bool_t xdr_remote_domain_events_register_ret (XDR *, remote_domain_events_register_ret*); extern bool_t xdr_remote_domain_events_deregister_ret (XDR *, remote_domain_events_deregister_ret*); extern bool_t xdr_remote_domain_event_ret (XDR *, remote_domain_event_ret*); +extern bool_t xdr_remote_import_domain_xml_args (XDR *, remote_import_domain_xml_args*); +extern bool_t xdr_remote_import_domain_xml_ret (XDR *, remote_import_domain_xml_ret*); +extern bool_t xdr_remote_export_domain_xml_args (XDR *, remote_export_domain_xml_args*); +extern bool_t xdr_remote_export_domain_xml_ret (XDR *, remote_export_domain_xml_ret*); extern bool_t xdr_remote_procedure (XDR *, remote_procedure*); extern bool_t xdr_remote_message_direction (XDR *, remote_message_direction*); extern bool_t xdr_remote_message_status (XDR *, remote_message_status*); @@ -1843,6 +1873,10 @@ extern bool_t xdr_remote_node_device_res extern bool_t xdr_remote_domain_events_register_ret (); extern bool_t xdr_remote_domain_events_deregister_ret (); extern bool_t xdr_remote_domain_event_ret (); +extern bool_t xdr_remote_import_domain_xml_args (); +extern bool_t xdr_remote_import_domain_xml_ret (); +extern bool_t xdr_remote_export_domain_xml_args (); +extern bool_t xdr_remote_export_domain_xml_ret (); extern bool_t xdr_remote_procedure (); extern bool_t xdr_remote_message_direction (); extern bool_t xdr_remote_message_status (); diff -r ba47cd6949a4 qemud/remote_protocol.x --- a/qemud/remote_protocol.x Thu Apr 16 12:44:17 2009 +0100 +++ b/qemud/remote_protocol.x Fri Apr 17 10:22:22 2009 +0100 @@ -1130,6 +1130,29 @@ struct remote_domain_event_ret { int detail; }; + +struct remote_import_domain_xml_args { + remote_nonnull_string format; + remote_nonnull_string config; + unsigned flags; +}; + +struct remote_import_domain_xml_ret { + remote_nonnull_string xml; +}; + + +struct remote_export_domain_xml_args { + remote_nonnull_string format; + remote_nonnull_string xml; + unsigned flags; +}; + +struct remote_export_domain_xml_ret { + remote_nonnull_string config; +}; + + /*----- Protocol. -----*/ /* Define the program number, protocol version and procedure numbers here. */ @@ -1270,7 +1293,9 @@ enum remote_procedure { REMOTE_PROC_NODE_DEVICE_RESET = 120, REMOTE_PROC_DOMAIN_GET_SECURITY_LABEL = 121, - REMOTE_PROC_NODE_GET_SECURITY_MODEL = 122 + REMOTE_PROC_NODE_GET_SECURITY_MODEL = 122, + REMOTE_PROC_IMPORT_DOMAIN_XML = 123, + REMOTE_PROC_EXPORT_DOMAIN_XML = 124 }; /* Custom RPC structure. */ diff -r ba47cd6949a4 src/driver.h --- a/src/driver.h Thu Apr 16 12:44:17 2009 +0100 +++ b/src/driver.h Fri Apr 17 10:22:22 2009 +0100 @@ -151,6 +151,16 @@ typedef int typedef char * (*virDrvDomainDumpXML) (virDomainPtr dom, int flags); +typedef char * + (*virDrvConnectImportDomainXML) (virConnectPtr conn, + const char *configType, + const char *configData, + unsigned int flags); +typedef char * + (*virDrvConnectExportDomainXML) (virConnectPtr conn, + const char *configType, + const char *xmlDesc, + unsigned int flags); typedef int (*virDrvListDefinedDomains) (virConnectPtr conn, char **const names, @@ -380,6 +390,8 @@ struct _virDriver { virDrvDomainGetSecurityLabel domainGetSecurityLabel; virDrvNodeGetSecurityModel nodeGetSecurityModel; virDrvDomainDumpXML domainDumpXML; + virDrvConnectImportDomainXML importDomainXML; + virDrvConnectExportDomainXML exportDomainXML; virDrvListDefinedDomains listDefinedDomains; virDrvNumOfDefinedDomains numOfDefinedDomains; virDrvDomainCreate domainCreate; diff -r ba47cd6949a4 src/libvirt.c --- a/src/libvirt.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/libvirt.c Fri Apr 17 10:22:22 2009 +0100 @@ -2633,6 +2633,105 @@ error: } /** + * virConnectImportDomainXML: + * @conn: a connection object + * @format: configuration format importing from + * @config: the configuration data to import + * @flags: currently unused, pass 0 + * + * Reads native configuration data describing a domain, and + * generates libvirt domain XML. The format of the native + * data is hypervisor dependant. + * + * Returns a 0 terminated UTF-8 encoded XML instance, or NULL in case of error. + * the caller must free() the returned value. + */ +char *virConnectImportDomainXML(virConnectPtr conn, + const char *format, + const char *config, + unsigned int flags) +{ + DEBUG("conn=%p, format=%s config=%s flags=%u", conn, format, config, flags); + + virResetLastError(); + + if (!VIR_IS_CONNECT(conn)) { + virLibConnError(NULL, VIR_ERR_INVALID_CONN, __FUNCTION__); + return (NULL); + } + + if (format == NULL || config == NULL) { + virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__); + return (NULL); + } + + if (conn->driver->importDomainXML) { + char *ret; + ret = conn->driver->importDomainXML (conn, format, config, flags); + if (!ret) + goto error; + return ret; + } + + virLibConnError (conn, VIR_ERR_NO_SUPPORT, __FUNCTION__); + +error: + /* Copy to connection error object for back compatability */ + virSetConnError(conn); + return NULL; +} + +/** + * virConnectExportDomainXML: + * @conn: a connection object + * @format: configuration format exporting to + * @xml: the domain configuration to export + * @flags: currently unused, pass 0 + * + * Reads a domain XML configuration document, and generates + * generates a native configuration file describing the domain. + * The format of the native data is hypervisor dependant. + * + * Returns a 0 terminated UTF-8 encoded native config datafile, or NULL in case of error. + * the caller must free() the returned value. + */ +char *virConnectExportDomainXML(virConnectPtr conn, + const char *format, + const char *xml, + unsigned int flags) +{ + DEBUG("conn=%p, format=%s xml=%s flags=%u", conn, format, xml, flags); + + virResetLastError(); + + if (!VIR_IS_CONNECT(conn)) { + virLibConnError(NULL, VIR_ERR_INVALID_CONN, __FUNCTION__); + return (NULL); + } + + if (format == NULL || xml == NULL) { + virLibConnError(conn, VIR_ERR_INVALID_ARG, __FUNCTION__); + return (NULL); + } + + if (conn->driver->exportDomainXML) { + char *ret; + ret = conn->driver->exportDomainXML (conn, format, xml, flags); + if (!ret) + goto error; + return ret; + } + + virLibConnError (conn, VIR_ERR_NO_SUPPORT, __FUNCTION__); + +error: + /* Copy to connection error object for back compatability */ + virSetConnError(conn); + return NULL; +} + + +/** * virDomainMigrate: * @domain: a domain object * @dconn: destination host (a connection object) diff -r ba47cd6949a4 src/libvirt_public.syms --- a/src/libvirt_public.syms Thu Apr 16 12:44:17 2009 +0100 +++ b/src/libvirt_public.syms Fri Apr 17 10:22:22 2009 +0100 @@ -258,4 +258,10 @@ LIBVIRT_0.6.1 { virNodeGetSecurityModel; } LIBVIRT_0.6.0; +LIBVIRT_0.6.3 { + global: + virConnectImportDomainXML; + virConnectExportDomainXML; +} LIBVIRT_0.6.1; + # .... define new API here using predicted next version number .... diff -r ba47cd6949a4 src/lxc_driver.c --- a/src/lxc_driver.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/lxc_driver.c Fri Apr 17 10:22:22 2009 +0100 @@ -1443,6 +1443,8 @@ static virDriver lxcDriver = { NULL, /* domainGetSecurityLabel */ NULL, /* nodeGetSecurityModel */ lxcDomainDumpXML, /* domainDumpXML */ + NULL, /* importDomainXML */ + NULL, /* exportDomainXML */ lxcListDefinedDomains, /* listDefinedDomains */ lxcNumDefinedDomains, /* numOfDefinedDomains */ lxcDomainStart, /* domainCreate */ diff -r ba47cd6949a4 src/openvz_driver.c --- a/src/openvz_driver.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/openvz_driver.c Fri Apr 17 10:22:22 2009 +0100 @@ -1344,6 +1344,8 @@ static virDriver openvzDriver = { NULL, /* domainGetSecurityLabel */ NULL, /* nodeGetSecurityModel */ openvzDomainDumpXML, /* domainDumpXML */ + NULL, /* importDomainXML */ + NULL, /* exportDomainXML */ openvzListDefinedDomains, /* listDefinedDomains */ openvzNumDefinedDomains, /* numOfDefinedDomains */ openvzDomainCreate, /* domainCreate */ diff -r ba47cd6949a4 src/qemu_conf.c --- a/src/qemu_conf.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/qemu_conf.c Fri Apr 17 10:22:22 2009 +0100 @@ -1245,21 +1245,18 @@ int qemudBuildCommandLine(virConnectPtr case VIR_DOMAIN_NET_TYPE_ETHERNET: { - char arg[PATH_MAX]; - if (net->ifname) { - if (snprintf(arg, PATH_MAX-1, "tap,ifname=%s,script=%s,vlan=%d", - net->ifname, - net->data.ethernet.script, - vlan) >= (PATH_MAX-1)) - goto error; - } else { - if (snprintf(arg, PATH_MAX-1, "tap,script=%s,vlan=%d", - net->data.ethernet.script, - vlan) >= (PATH_MAX-1)) - goto error; - } + virBuffer buf = VIR_BUFFER_INITIALIZER; - ADD_ARG_LIT(arg); + virBufferAddLit(&buf, "tap"); + if (net->ifname) + virBufferVSprintf(&buf, ",ifname=%s", net->ifname); + if (net->data.ethernet.script) + virBufferVSprintf(&buf, ",script=%s", net->data.ethernet.script); + virBufferVSprintf(&buf, ",vlan=%d", vlan); + if (virBufferError(&buf)) + goto error; + + ADD_ARG(virBufferContentAndReset(&buf)); } break; diff -r ba47cd6949a4 src/qemu_conf.h --- a/src/qemu_conf.h Thu Apr 16 12:44:17 2009 +0100 +++ b/src/qemu_conf.h Fri Apr 17 10:22:22 2009 +0100 @@ -106,6 +106,9 @@ struct _qemudDomainStatus { #define QEMUD_MIGRATION_FIRST_PORT 49152 #define QEMUD_MIGRATION_NUM_PORTS 64 +/* Config type for XML import/export conversions */ +#define QEMU_CONFIG_FORMAT_ARGV "qemu-argv" + #define qemudReportError(conn, dom, net, code, fmt...) \ virReportErrorHelper(conn, VIR_FROM_QEMU, code, __FILE__, \ __FUNCTION__, __LINE__, fmt) diff -r ba47cd6949a4 src/qemu_driver.c --- a/src/qemu_driver.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/qemu_driver.c Fri Apr 17 10:22:22 2009 +0100 @@ -3333,6 +3333,131 @@ cleanup: return ret; } +#if 0 +static char *qemuImportDomainXML(virConnectPtr conn, + const char *format, + const char *config, + unsigned int flags) { +} +#endif + + +static char *qemuExportDomainXML(virConnectPtr conn, + const char *format, + const char *xmlData, + unsigned int flags ATTRIBUTE_UNUSED) { + struct qemud_driver *driver = conn->privateData; + virDomainDefPtr def = NULL; + const char *emulator; + unsigned int qemuCmdFlags; + struct stat sb; + const char **retargv = NULL; + const char **retenv = NULL; + const char **tmp; + virBuffer buf = VIR_BUFFER_INITIALIZER; + char *ret = NULL; + int i; + + if (STRNEQ(format, QEMU_CONFIG_FORMAT_ARGV)) { + qemudReportError(conn, NULL, NULL, VIR_ERR_INVALID_ARG, + _("unsupported config type %s"), format); + goto cleanup; + } + + def = virDomainDefParseString(conn, driver->caps, xmlData, 0); + if (!def) + goto cleanup; + + /* Since we're just exporting args, we can't do bridge/network + * setups, since libvirt will normally create TAP devices + * directly. We convert those configs into generic 'ethernet' + * config and assume the user has suitable 'ifup-qemu' scripts + */ + for (i = 0 ; i < def->nnets ; i++) { + virDomainNetDefPtr net = def->nets[i]; + if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK) { + VIR_FREE(net->data.network.name); + net->type = VIR_DOMAIN_NET_TYPE_ETHERNET; + net->data.ethernet.dev = NULL; + net->data.ethernet.script = NULL; + net->data.ethernet.ipaddr = NULL; + } else if (net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) { + net->type = VIR_DOMAIN_NET_TYPE_ETHERNET; + /* Rely on fact that the 'ethernet' and 'bridge' + * union structs have members in same place */ + } + } + if (def->graphics && + def->graphics->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC && + def->graphics->data.vnc.autoport) { + def->graphics->data.vnc.port = 5900; + } + emulator = def->emulator; + if (!emulator) + emulator = virDomainDefDefaultEmulator(conn, def, driver->caps); + if (!emulator) + goto cleanup; + + /* Make sure the binary we are about to try exec'ing exists. + * Technically we could catch the exec() failure, but that's + * in a sub-process so its hard to feed back a useful error + */ + if (stat(emulator, &sb) < 0) { + virReportSystemError(conn, errno, + _("Cannot find QEMU binary %s"), + emulator); + goto cleanup; + } + + if (qemudExtractVersionInfo(emulator, + NULL, + &qemuCmdFlags) < 0) { + qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR, + _("Cannot determine QEMU argv syntax %s"), + emulator); + goto cleanup; + } + + + if (qemudBuildCommandLine(conn, driver, def, + qemuCmdFlags, + &retargv, &retenv, + NULL, NULL, /* Don't want it to create TAP devices */ + NULL) < 0) { + goto cleanup; + } + + tmp = retenv; + while (*tmp) { + virBufferAdd(&buf, *tmp, strlen(*tmp)); + virBufferAddLit(&buf, " "); + tmp++; + } + tmp = retargv; + while (*tmp) { + virBufferAdd(&buf, *tmp, strlen(*tmp)); + virBufferAddLit(&buf, " "); + tmp++; + } + + if (virBufferError(&buf)) + goto cleanup; + + ret = virBufferContentAndReset(&buf); + +cleanup: + for (tmp = retargv ; tmp && *tmp ; tmp++) + VIR_FREE(*tmp); + VIR_FREE(retargv); + + for (tmp = retenv ; tmp && *tmp ; tmp++) + VIR_FREE(*tmp); + VIR_FREE(retenv); + + virDomainDefFree(def); + return ret; +} + static int qemudListDefinedDomains(virConnectPtr conn, char **const names, int nnames) { @@ -5098,6 +5223,8 @@ static virDriver qemuDriver = { qemudDomainGetSecurityLabel, /* domainGetSecurityLabel */ qemudNodeGetSecurityModel, /* nodeGetSecurityModel */ qemudDomainDumpXML, /* domainDumpXML */ + NULL, /* importDomainXML */ + qemuExportDomainXML, /* exportDomainXML */ qemudListDefinedDomains, /* listDefinedDomains */ qemudNumDefinedDomains, /* numOfDefinedDomains */ qemudDomainStart, /* domainCreate */ diff -r ba47cd6949a4 src/remote_internal.c --- a/src/remote_internal.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/remote_internal.c Fri Apr 17 10:22:22 2009 +0100 @@ -2409,6 +2409,68 @@ done: return rv; } +static char * +remoteImportDomainXML (virConnectPtr conn, + const char *format, + const char *config, + unsigned int flags) +{ + char *rv = NULL; + remote_import_domain_xml_args args; + remote_import_domain_xml_ret ret; + struct private_data *priv = conn->privateData; + + remoteDriverLock(priv); + + args.format = (char *)format; + args.config = (char *)config; + args.flags = flags; + + memset (&ret, 0, sizeof ret); + if (call (conn, priv, 0, REMOTE_PROC_IMPORT_DOMAIN_XML, + (xdrproc_t) xdr_remote_import_domain_xml_args, (char *) &args, + (xdrproc_t) xdr_remote_import_domain_xml_ret, (char *) &ret) == -1) + goto done; + + /* Caller frees. */ + rv = ret.xml; + +done: + remoteDriverUnlock(priv); + return rv; +} + +static char * +remoteExportDomainXML (virConnectPtr conn, + const char *format, + const char *xml, + unsigned int flags) +{ + char *rv = NULL; + remote_export_domain_xml_args args; + remote_export_domain_xml_ret ret; + struct private_data *priv = conn->privateData; + + remoteDriverLock(priv); + + args.format = (char *)format; + args.xml = (char *)xml; + args.flags = flags; + + memset (&ret, 0, sizeof ret); + if (call (conn, priv, 0, REMOTE_PROC_EXPORT_DOMAIN_XML, + (xdrproc_t) xdr_remote_export_domain_xml_args, (char *) &args, + (xdrproc_t) xdr_remote_export_domain_xml_ret, (char *) &ret) == -1) + goto done; + + /* Caller frees. */ + rv = ret.config; + +done: + remoteDriverUnlock(priv); + return rv; +} + static int remoteDomainMigratePrepare (virConnectPtr dconn, char **cookie, int *cookielen, @@ -6875,6 +6937,8 @@ static virDriver driver = { remoteDomainGetSecurityLabel, /* domainGetSecurityLabel */ remoteNodeGetSecurityModel, /* nodeGetSecurityModel */ remoteDomainDumpXML, /* domainDumpXML */ + remoteImportDomainXML, /* importDomainXML */ + remoteExportDomainXML, /* exportDomainXML */ remoteListDefinedDomains, /* listDefinedDomains */ remoteNumOfDefinedDomains, /* numOfDefinedDomains */ remoteDomainCreate, /* domainCreate */ diff -r ba47cd6949a4 src/test.c --- a/src/test.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/test.c Fri Apr 17 10:22:22 2009 +0100 @@ -3504,6 +3504,8 @@ static virDriver testDriver = { NULL, /* domainGetSecurityLabel */ NULL, /* nodeGetSecurityModel */ testDomainDumpXML, /* domainDumpXML */ + NULL, /* importDomainXML */ + NULL, /* exportDomainXML */ testListDefinedDomains, /* listDefinedDomains */ testNumOfDefinedDomains, /* numOfDefinedDomains */ testDomainCreate, /* domainCreate */ diff -r ba47cd6949a4 src/uml_driver.c --- a/src/uml_driver.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/uml_driver.c Fri Apr 17 10:22:22 2009 +0100 @@ -1859,6 +1859,8 @@ static virDriver umlDriver = { NULL, /* domainGetSecurityLabel */ NULL, /* nodeGetSecurityModel */ umlDomainDumpXML, /* domainDumpXML */ + NULL, /* importDomainXML */ + NULL, /* exportDomainXML */ umlListDefinedDomains, /* listDefinedDomains */ umlNumDefinedDomains, /* numOfDefinedDomains */ umlDomainStart, /* domainCreate */ diff -r ba47cd6949a4 src/virsh.c --- a/src/virsh.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/virsh.c Fri Apr 17 10:22:22 2009 +0100 @@ -2210,6 +2210,98 @@ cmdDumpXML(vshControl *ctl, const vshCmd } /* + * "domxml-import" command + */ +static const vshCmdInfo info_domxmlimport[] = { + {"help", gettext_noop("Import native config as domain XML")}, + {"desc", gettext_noop("Import native guest configuration format to domain XML format.")}, + {NULL, NULL} +}; + +static const vshCmdOptDef opts_domxmlimport[] = { + {"format", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("source config data format")}, + {"config", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("config data file to import from")}, + {NULL, 0, 0, NULL} +}; + +static int +cmdImportDomXML(vshControl *ctl, const vshCmd *cmd) +{ + int ret = TRUE; + char *format; + char *configFile; + char *configData; + char *xmlData; + int flags = 0; + + if (!vshConnectionUsability(ctl, ctl->conn, TRUE)) + return FALSE; + + format = vshCommandOptString(cmd, "format", NULL); + configFile = vshCommandOptString(cmd, "config", NULL); + + if (virFileReadAll(configFile, 1024*1024, &configData) < 0) { + return FALSE; + } + + xmlData = virConnectImportDomainXML(ctl->conn, format, configData, flags); + if (xmlData != NULL) { + printf("%s", xmlData); + free(xmlData); + } else { + ret = FALSE; + } + + return ret; +} + +/* + * "domxml-export" command + */ +static const vshCmdInfo info_domxmlexport[] = { + {"help", gettext_noop("Export domain XML as native config")}, + {"desc", gettext_noop("Export domain XML config to a native guest configuration format.")}, + {NULL, NULL} +}; + +static const vshCmdOptDef opts_domxmlexport[] = { + {"format", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("target config data type format")}, + {"xml", VSH_OT_DATA, VSH_OFLAG_REQ, gettext_noop("xml data file to export from")}, + {NULL, 0, 0, NULL} +}; + +static int +cmdExportDomXML(vshControl *ctl, const vshCmd *cmd) +{ + int ret = TRUE; + char *format; + char *xmlFile; + char *configData; + char *xmlData; + int flags = 0; + + if (!vshConnectionUsability(ctl, ctl->conn, TRUE)) + return FALSE; + + format = vshCommandOptString(cmd, "format", NULL); + xmlFile = vshCommandOptString(cmd, "xml", NULL); + + if (virFileReadAll(xmlFile, 1024*1024, &xmlData) < 0) { + return FALSE; + } + + configData = virConnectExportDomainXML(ctl->conn, format, xmlData, flags); + if (configData != NULL) { + printf("%s", configData); + free(configData); + } else { + ret = FALSE; + } + + return ret; +} + +/* * "domname" command */ static const vshCmdInfo info_domname[] = { @@ -5867,12 +5959,14 @@ static const vshCmdDef commands[] = { {"domifstat", cmdDomIfstat, opts_domifstat, info_domifstat}, {"dumpxml", cmdDumpXML, opts_dumpxml, info_dumpxml}, {"edit", cmdEdit, opts_edit, info_edit}, + {"export-domxml", cmdExportDomXML, opts_domxmlexport, info_domxmlexport}, {"find-storage-pool-sources", cmdPoolDiscoverSources, opts_find_storage_pool_sources, info_find_storage_pool_sources}, {"find-storage-pool-sources-as", cmdPoolDiscoverSourcesAs, opts_find_storage_pool_sources_as, info_find_storage_pool_sources_as}, {"freecell", cmdFreecell, opts_freecell, info_freecell}, {"hostname", cmdHostname, NULL, info_hostname}, + {"import-domxml", cmdImportDomXML, opts_domxmlimport, info_domxmlimport}, {"list", cmdList, opts_list, info_list}, {"migrate", cmdMigrate, opts_migrate, info_migrate}, diff -r ba47cd6949a4 src/xen_unified.c --- a/src/xen_unified.c Thu Apr 16 12:44:17 2009 +0100 +++ b/src/xen_unified.c Fri Apr 17 10:22:22 2009 +0100 @@ -1043,6 +1043,97 @@ xenUnifiedDomainDumpXML (virDomainPtr do return NULL; } + +static char * +xenUnifiedImportDomainXML(virConnectPtr conn, + const char *format, + const char *config, + unsigned int flags ATTRIBUTE_UNUSED) +{ + virDomainDefPtr def = NULL; + char *ret = NULL; + virConfPtr conf = NULL; + GET_PRIVATE(conn); + + if (STRNEQ(format, XEN_CONFIG_FORMAT_XM) && + STRNEQ(format, XEN_CONFIG_FORMAT_SEXPR)) { + xenUnifiedError(conn, VIR_ERR_INVALID_ARG, + _("unsupported config type %s"), format); + return NULL; + } + + if (STREQ(format, XEN_CONFIG_FORMAT_XM)) { + conf = virConfReadMem(config, strlen(config)); + if (!conf) + goto cleanup; + + def = xenXMDomainConfigParse(conn, conf); + } else if (STREQ(format, XEN_CONFIG_FORMAT_SEXPR)) { + def = xenDaemonParseSxprString(conn, config, priv->xendConfigVersion); + } + if (!def) + goto cleanup; + + ret = virDomainDefFormat(conn, def, 0); + +cleanup: + virDomainDefFree(def); + return ret; +} + + +#define MAX_CONFIG_SIZE (1024 * 65) +static char * +xenUnifiedExportDomainXML(virConnectPtr conn, + const char *format, + const char *xmlData, + unsigned int flags ATTRIBUTE_UNUSED) +{ + virDomainDefPtr def = NULL; + char *ret = NULL; + virConfPtr conf = NULL; + GET_PRIVATE(conn); + + if (STRNEQ(format, XEN_CONFIG_FORMAT_XM) && + STRNEQ(format, XEN_CONFIG_FORMAT_SEXPR)) { + xenUnifiedError(conn, VIR_ERR_INVALID_ARG, + _("unsupported config type %s"), format); + goto cleanup; + } + + if (!(def = virDomainDefParseString(conn, + priv->caps, + xmlData, + 0))) + goto cleanup; + + if (STREQ(format, XEN_CONFIG_FORMAT_XM)) { + int len = MAX_CONFIG_SIZE; + conf = xenXMDomainConfigFormat(conn, def); + if (!conf) + goto cleanup; + + if (VIR_ALLOC_N(ret, len) < 0) { + virReportOOMError(conn); + goto cleanup; + } + + if (virConfWriteMem(ret, &len, conf) < 0) { + VIR_FREE(ret); + goto cleanup; + } + } else if (STREQ(format, XEN_CONFIG_FORMAT_SEXPR)) { + ret = xenDaemonFormatSxpr(conn, def, priv->xendConfigVersion); + } + +cleanup: + virDomainDefFree(def); + if (conf) + virConfFree(conf); + return ret; +} + + static int xenUnifiedDomainMigratePrepare (virConnectPtr dconn, char **cookie, @@ -1580,6 +1671,8 @@ static virDriver xenUnifiedDriver = { NULL, /* domainGetSecurityLabel */ NULL, /* nodeGetSecurityModel */ xenUnifiedDomainDumpXML, /* domainDumpXML */ + xenUnifiedImportDomainXML, /* importDomainXML */ + xenUnifiedExportDomainXML, /* exportDomainXML */ xenUnifiedListDefinedDomains, /* listDefinedDomains */ xenUnifiedNumOfDefinedDomains, /* numOfDefinedDomains */ xenUnifiedDomainCreate, /* domainCreate */ diff -r ba47cd6949a4 src/xen_unified.h --- a/src/xen_unified.h Thu Apr 16 12:44:17 2009 +0100 +++ b/src/xen_unified.h Fri Apr 17 10:22:22 2009 +0100 @@ -46,6 +46,9 @@ extern int xenRegister (void); #define MIN_XEN_GUEST_SIZE 64 /* 64 megabytes */ +#define XEN_CONFIG_FORMAT_XM "xen-xm" +#define XEN_CONFIG_FORMAT_SEXPR "xen-sxpr" + /* _xenUnifiedDriver: * * Entry points into the underlying Xen drivers. This structure -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

1 0

[libvirt] [PATCH] fix changelog
by Guido Günther 17 Apr '09

17 Apr '09

Hi, I broke "make syntax-check" by forgetting to set a C locale. O.k. to apply: diff --git a/ChangeLog b/ChangeLog index 18845e1..96ac44a 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,4 +1,4 @@ -Do Apr 16 17:48:30 CEST 2009 Guido Günther <agx(a)sigxcpu.org> +Thu Apr 16 17:48:30 CEST 2009 Guido Günther <agx(a)sigxcpu.org> * src/qemu_driver.c (qemudMonitorCommandExtra): don't log monitor output to domain log file. It's logged via the logging system @@ -10,7 +10,7 @@ Do Apr 16 17:48:30 CEST 2009 Guido Günther <agx(a)sigxcpu.org> qemudDomainMemoryPeek, qemudDomainMigratePerform): prefix monitor debug output with vm name. -Do Apr 16 16:48:51 CEST 2009 Guido Günther <agx(a)sigxcpu.org> +Thu Apr 16 16:48:51 CEST 2009 Guido Günther <agx(a)sigxcpu.org> * src/qemud.c (remoteReadConfigFile): don't hardcode buffer for getgrnam_r to 1024 bytes and increase it on ERANGE. Would we make a changelog entry for modifying the changelog? -- Guido

2 2

[libvirt] How can I attach a network interface to KVM machine
by Anton Protopopov 17 Apr '09

17 Apr '09

Hi. When I am trying to attach an interface <interface type='bridge'> <mac address='52:54:00:db:1a:bb'/> <source bridge='mkvebr0'/> </interface> libvirt reports me, that libvirt.libvirtError: this function is not supported by the hypervisor: this device type cannot be attached Is there a legal way to attach a network interface to QEMU/KVM machine?

2 4

[libvirt] Multpile network interfaces have same MAC address
by David Mueller 16 Apr '09

16 Apr '09

I remember seeing this problem before, but I can't remember what the resolution was, nor can I find a discussion of the issue in the list archives or Bugzilla. I've had my setup working for a while now, on both Fedora 8 and Fedora 10. Now I'm trying to get it to work with CentOS 5 and running into an old bug. My guest VM has multiple virtual network interfaces, with the MAC address defined in the XML file used to define the VM. However, I'm seeing each network interface getting the same MAC addrss (the last one defined in the XML file) on all if the interfaces when I run ifconfig in the guest. Was there a workaround for this, or do I need to upgrade libvirt? CentOS 5.2 is what I'm working with; they haven't released 5.3 yet so I don't know if that will have a newer version. # rpm -qa libvirt libvirt-0.3.3-7.el5 # virsh version Compiled against library: libvir 0.3.3 Using library: libvir 0.3.3 Using API: QEMU 0.3.3 Running hypervisor: QEMU 0.9.1 - David

2 6

Re: [libvirt] libvirt 0.3.3 and unix_sock_group
by Daniel Labrosse 16 Apr '09

16 Apr '09

Thanks for getting back to me. The permissions on that directory look ok to me, see below (cadc is the group specified in my libvirtd.conf). Which leads me to think it could be something else. labrosse@proc5-09$ ls -la /var/run/libvirt total 16 drwxr-xr-x 2 root root 4096 Apr 15 03:25 . drwxr-xr-x 21 root root 4096 Apr 15 04:02 .. srwxrwx--- 1 root cadc 0 Apr 15 03:25 libvirt-sock srwxrwxrwx 1 root cadc 0 Apr 15 03:25 libvirt-sock-ro labrosse@proc5-09$ ls -l /var/run/libvirt/libvirt-sock srwxrwx--- 1 root cadc 0 Apr 15 03:25 /var/run/libvirt/libvirt-sock It seems as if its xen causing the issue (although i cannot see any issues in the logs). I get a 'Xen Daemon error' when connecting as my user. I have verified the xen daemon is running and I can sudo virsh list without seeing any errors. > labrosse@proc5-09$ virsh list > libvir: Xen Daemon error : internal error failed to connect to xend > libvir: Xen Daemon error : internal error failed to connect to xend > Id Name State > ---------------------------------- > 0 Domain-0 running > 7 1-d462220a-8dfe-4b7b-b853-a89f3cac2d46 blocked > > labrosse@proc5-09$ sudo virsh list > Id Name State > ---------------------------------- > 0 Domain-0 running > 7 1-d462220a-8dfe-4b7b-b853-a89f3cac2d46 blocked > Are you aware of any other configuration that needs to be done elsewhere? thanks Daniel On Wed, 2009-04-15 at 10:08 +0100, Daniel P. Berrange wrote: > On Tue, Apr 14, 2009 at 02:06:52PM -0700, Daniel Labrosse wrote: > > Hi All, > > > > I've been using libvirt 0..4.4 for a few weeks now. I have > > unix_sock_group = "mygroup" set so that i can perform non-root > > management capabilities on the host. > > > > I have recently installed a new host running Scientific Linux 5.3 and > > libvirt 0.3.3 comes as default. First off, there is no libvirtd.conf > > file included with 0.3.3, so I copied the file from libvirt 0.4.4 (which > > is running on my Fedora 8 box). > > The 'unix_sock_group' config param *is* supported in 0.3.3, but the > libvirtd daemon will not change the group ownership in the directory > /var/run/libvirt where the socket is created. So you almost certainly > won't be able to access the socket itself. You could try chgrp'ing the > directory. A good test is to make sure you can access the socket as > non-root, eg > > ls -l /var/run/libvirt/libvirt-sock > > > Daniel

1 0

[libvirt] libvirt 0.6.2 on Fedora 10
by Thomas Sjolshagen 16 Apr '09

16 Apr '09

I've been looking for a binary package for x86_64/fc10 of libvirt/libvirt-python, but can only find the F11 versions. Have none been created and I'll need to build my own, or am I (and google/rpmfind/koji/etc) being vision impaired? Thanks, // Thomas ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.

4 4

[libvirt] respect debug level for domain log file
by Guido Günther 16 Apr '09

16 Apr '09

Hi, currently every monitor command is dumped into the domain logfiles, this can lead to huge logs[1]. Since we're not going through the normal logging facilites to get per domain logfiles we should at least resepct the default priority. Cheers, -- Guido [1] http://bugs.debian.org/524145

3 5

[libvirt] VirtualBox libvirt support sample XML file
by Pritesh Kothari 16 Apr '09

16 Apr '09

Hi All, Just posting a sample XML file for creating a machine with all features supported by the patch, so that it is easy for everyone to know which features are supported till now, I am in process of adding the Documentation for same and thus posting this file till then. Regards Pritesh

2 4

[libvirt] [PATCH][take2][1/2] add virGetUIDByUsername() and virGetGIDByGroupname()
by Ryota Ozaki 16 Apr '09

16 Apr '09

Signed-off-by: Ryota Ozaki <ozaki.ryota(a)gmail.com> >From de8c57e3a2c4e564ec989016c547ad6754e43871 Mon Sep 17 00:00:00 2001 From: Ryota Ozaki <ozaki.ryota(a)gmail.com> Date: Wed, 8 Apr 2009 23:10:46 +0900 Subject: [PATCH] add virGetUIDByUsername() and virGetGIDByGroupname() --- configure.in | 2 +- src/util.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++- src/util.h | 8 ++++++++ 3 files changed, 65 insertions(+), 2 deletions(-) diff --git a/configure.in b/configure.in index ac2c89e..2ae15e3 100644 --- a/configure.in +++ b/configure.in @@ -75,7 +75,7 @@ dnl Availability of various common functions (non-fatal if missing). AC_CHECK_FUNCS([cfmakeraw regexec uname sched_getaffinity getuid getgid posix_fallocate mmap readlink]) dnl Availability of various not common threadsafe functions -AC_CHECK_FUNCS([strerror_r strtok_r getmntent_r getgrnam_r getpwuid_r]) +AC_CHECK_FUNCS([strerror_r strtok_r getmntent_r getgrnam_r getpwuid_r getpwnam_r]) dnl Availability of various common headers (non-fatal if missing). AC_CHECK_HEADERS([pwd.h paths.h regex.h sys/syslimits.h sys/utsname.h sys/wait.h winsock2.h sched.h termios.h sys/poll.h syslog.h]) diff --git a/src/util.c b/src/util.c index 5abdbbc..b939282 100644 --- a/src/util.c +++ b/src/util.c @@ -53,9 +53,12 @@ #include <paths.h> #endif #include <netdb.h> -#ifdef HAVE_GETPWUID_R +#if defined(HAVE_GETPWUID_R) || defined(HAVE_GETPWNAM_R) #include <pwd.h> #endif +#ifdef HAVE_GETGRNAM_R +#include <grp.h> +#endif #include "virterror_internal.h" #include "logging.h" @@ -1686,3 +1689,55 @@ char *virGetUserDirectory(virConnectPtr conn, return ret; } #endif + + +#ifdef HAVE_GETPWNAM_R +int virGetUIDByUsername(virConnectPtr conn, char *name) +{ + struct passwd pwbuf; + struct passwd *pw = NULL; + char *strbuf; + size_t strbuflen = sysconf(_SC_GETPW_R_SIZE_MAX); + + if (VIR_ALLOC_N(strbuf, strbuflen) < 0) { + virReportOOMError(conn); + return -1; + } + + if (getpwnam_r(name, &pwbuf, strbuf, strbuflen, &pw) != 0 || pw == NULL) { + virReportSystemError(conn, errno, + _("Failed to find user record for name '%s'"), + name); + VIR_FREE(strbuf); + return -1; + } + VIR_FREE(strbuf); + return pw->pw_uid; +} +#endif + + +#ifdef HAVE_GETGRNAM_R +int virGetGIDByGroupname(virConnectPtr conn, char *name) +{ + struct group grbuf; + struct group *gr = NULL; + char *strbuf; + size_t strbuflen = sysconf(_SC_GETGR_R_SIZE_MAX); + + if (VIR_ALLOC_N(strbuf, strbuflen) < 0) { + virReportOOMError(conn); + return -1; + } + + if (getgrnam_r(name, &grbuf, strbuf, strbuflen, &gr) != 0 || gr == NULL) { + virReportSystemError(conn, errno, + _("Failed to find group record for name '%s'"), + name); + VIR_FREE(strbuf); + return -1; + } + VIR_FREE(strbuf); + return gr->gr_gid; +} +#endif diff --git a/src/util.h b/src/util.h index 6fe03b6..0f75439 100644 --- a/src/util.h +++ b/src/util.h @@ -199,6 +199,14 @@ char *virGetUserDirectory(virConnectPtr conn, uid_t uid); #endif +#ifdef HAVE_GETPWNAM_R +int virGetUIDByUsername(virConnectPtr conn, char *name); +#endif + +#ifdef HAVE_GETGRNAM_R +int virGetGIDByGroupname(virConnectPtr conn, char *name); +#endif + int virRandomInitialize(unsigned int seed); int virRandom(int max); -- 1.6.0.6

3 3

[libvirt] [PATCH][take2][2/2] storage: allow alphabetical names in owner/group of permissions
by Ryota Ozaki 16 Apr '09

16 Apr '09

Signed-off-by: Ryota Ozaki <ozaki.ryota(a)gmail.com> >From c441d5f29f1ed964e3c17dcac8614c0834eaba49 Mon Sep 17 00:00:00 2001 From: Ryota Ozaki <ozaki.ryota(a)gmail.com> Date: Thu, 16 Apr 2009 23:17:29 +0900 Subject: [PATCH] storage: allow alphabetical names in owner/group of permissions --- docs/schemas/storagepool.rng | 10 ++++- docs/schemas/storagevol.rng | 10 ++++- src/Makefile.am | 1 + src/storage_backend.c | 8 +++- src/storage_backend_fs.c | 32 ++++++++++++++- src/storage_backend_logical.c | 33 ++++++++++++++- src/storage_conf.c | 91 +++++++++++++++++++++++++++++------------ src/storage_conf.h | 4 +- 8 files changed, 152 insertions(+), 37 deletions(-) diff --git a/docs/schemas/storagepool.rng b/docs/schemas/storagepool.rng index e152e19..ed1e597 100644 --- a/docs/schemas/storagepool.rng +++ b/docs/schemas/storagepool.rng @@ -127,10 +127,16 @@ <ref name='uint'/> </element> <element name='owner'> - <ref name='uint'/> + <choice> + <ref name='uint'/> + <ref name='name'/> + </choice> </element> <element name='group'> - <ref name='uint'/> + <choice> + <ref name='uint'/> + <ref name='name'/> + </choice> </element> <optional> <element name='label'> diff --git a/docs/schemas/storagevol.rng b/docs/schemas/storagevol.rng index c7bd3a7..13e08b5 100644 --- a/docs/schemas/storagevol.rng +++ b/docs/schemas/storagevol.rng @@ -46,10 +46,16 @@ <ref name='uint'/> </element> <element name='owner'> - <ref name='uint'/> + <choice> + <ref name='uint'/> + <ref name='name'/> + </choice> </element> <element name='group'> - <ref name='uint'/> + <choice> + <ref name='uint'/> + <ref name='name'/> + </choice> </element> <optional> <element name='label'> diff --git a/src/Makefile.am b/src/Makefile.am index f176b46..84567aa 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -333,6 +333,7 @@ endif # Needed to keep automake quiet about conditionals libvirt_driver_storage_la_SOURCES = +libvirt_driver_storage_la_LIBADD = libvirt_util.la if WITH_STORAGE_DIR if WITH_DRIVER_MODULES mod_LTLIBRARIES += libvirt_driver_storage.la diff --git a/src/storage_backend.c b/src/storage_backend.c index b154140..810c4b5 100644 --- a/src/storage_backend.c +++ b/src/storage_backend.c @@ -214,8 +214,12 @@ virStorageBackendUpdateVolTargetInfoFD(virConnectPtr conn, } target->perms.mode = sb.st_mode & S_IRWXUGO; - target->perms.uid = sb.st_uid; - target->perms.gid = sb.st_gid; + VIR_FREE(target->perms.owner); + if (virAsprintf(&target->perms.owner, "%d", sb.st_uid) == -1) + return -1; + VIR_FREE(target->perms.group); + if (virAsprintf(&target->perms.group, "%d", sb.st_gid) == -1) + return -1; VIR_FREE(target->perms.label); diff --git a/src/storage_backend_fs.c b/src/storage_backend_fs.c index 5000f43..d48c278 100644 --- a/src/storage_backend_fs.c +++ b/src/storage_backend_fs.c @@ -1189,7 +1189,37 @@ virStorageBackendFileSystemVolCreate(virConnectPtr conn, /* We can only chown/grp if root */ if (getuid() == 0) { - if (fchown(fd, vol->target.perms.uid, vol->target.perms.gid) < 0) { + int uid = 0, gid = 0; + char *owner = vol->target.perms.owner; + char *group = vol->target.perms.group; + + if (owner) { + char *end = NULL; + int id = strtol(owner, &end, 10); + if (*end || id < 0) { + id = virGetUIDByUsername(conn, owner); + if (id < 0) { + unlink(vol->target.path); + close(fd); + return -1; + } + } + uid = id; + } + if (group) { + char *end = NULL; + int id = strtol(group, &end, 10); + if (*end || id < 0) { + id = virGetUIDByUsername(conn, group); + if (id < 0) { + unlink(vol->target.path); + close(fd); + return -1; + } + } + gid = id; + } + if (fchown(fd, uid, gid) < 0) { virReportSystemError(conn, errno, _("cannot set file owner '%s'"), vol->target.path); diff --git a/src/storage_backend_logical.c b/src/storage_backend_logical.c index cbd2765..7a869f6 100644 --- a/src/storage_backend_logical.c +++ b/src/storage_backend_logical.c @@ -615,7 +615,38 @@ virStorageBackendLogicalCreateVol(virConnectPtr conn, /* We can only chown/grp if root */ if (getuid() == 0) { - if (fchown(fd, vol->target.perms.uid, vol->target.perms.gid) < 0) { + int uid = 0, gid = 0; + char *owner = vol->target.perms.owner; + char *group = vol->target.perms.group; + + if (owner) { + char *end = NULL; + int id = strtol(owner, &end, 10); + if (*end || id < 0) { + id = virGetUIDByUsername(conn, owner); + if (id < 0) { + unlink(vol->target.path); + close(fd); + return -1; + } + } + uid = id; + } + if (group) { + char *end = NULL; + int id = strtol(group, &end, 10); + if (*end || id < 0) { + id = virGetUIDByUsername(conn, group); + if (id < 0) { + unlink(vol->target.path); + close(fd); + return -1; + } + } + gid = id; + } + + if (fchown(fd, uid, gid) < 0) { virReportSystemError(conn, errno, _("cannot set file owner '%s'"), vol->target.path); diff --git a/src/storage_conf.c b/src/storage_conf.c index 9e25ccb..fd34319 100644 --- a/src/storage_conf.c +++ b/src/storage_conf.c @@ -256,8 +256,12 @@ virStorageVolDefFree(virStorageVolDefPtr def) { VIR_FREE(def->source.extents); VIR_FREE(def->target.path); + VIR_FREE(def->target.perms.owner); + VIR_FREE(def->target.perms.group); VIR_FREE(def->target.perms.label); VIR_FREE(def->backingStore.path); + VIR_FREE(def->backingStore.perms.owner); + VIR_FREE(def->backingStore.perms.group); VIR_FREE(def->backingStore.perms.label); VIR_FREE(def); } @@ -295,6 +299,8 @@ virStoragePoolDefFree(virStoragePoolDefPtr def) { virStoragePoolSourceFree(&def->source); VIR_FREE(def->target.path); + VIR_FREE(def->target.perms.owner); + VIR_FREE(def->target.perms.group); VIR_FREE(def->target.perms.label); VIR_FREE(def); } @@ -391,15 +397,14 @@ virStorageDefParsePerms(virConnectPtr conn, xmlNodePtr relnode; xmlNodePtr node; + perms->mode = defaultmode; + perms->owner = NULL; + perms->group = NULL; + perms->label = NULL; + node = virXPathNode(conn, permxpath, ctxt); - if (node == NULL) { - /* Set default values if there is not <permissions> element */ - perms->mode = defaultmode; - perms->uid = getuid(); - perms->gid = getgid(); - perms->label = NULL; + if (node == NULL) return 0; - } relnode = ctxt->node; ctxt->node = node; @@ -420,25 +425,53 @@ virStorageDefParsePerms(virConnectPtr conn, } if (virXPathNode(conn, "./owner", ctxt) == NULL) { - perms->uid = getuid(); - } else { - if (virXPathLong(conn, "number(./owner)", ctxt, &v) < 0) { - virStorageReportError(conn, VIR_ERR_XML_ERROR, - "%s", _("malformed owner element")); + if (virAsprintf(&perms->owner, "%d", getuid()) == -1) { + ret = -ENOMEM; goto error; } - perms->uid = (int)v; + } else { + if (virXPathLong(conn, "number(./owner)", ctxt, &v) == 0) { + if (virAsprintf(&perms->owner, "%ld", v) == -1) { + ret = -ENOMEM; + goto error; + } + } else { + char *name; + + name = virXPathString(conn, "string(./owner)", ctxt); + if (!name) { + virStorageReportError(conn, VIR_ERR_XML_ERROR, + "%s", _("malformed owner element")); + goto error; + } + + perms->owner = name; + } } if (virXPathNode(conn, "./group", ctxt) == NULL) { - perms->gid = getgid(); - } else { - if (virXPathLong(conn, "number(./group)", ctxt, &v) < 0) { - virStorageReportError(conn, VIR_ERR_XML_ERROR, - "%s", _("malformed group element")); + if (virAsprintf(&perms->owner, "%d", getgid()) == -1) { + ret = -ENOMEM; goto error; } - perms->gid = (int)v; + } else { + if (virXPathLong(conn, "number(./group)", ctxt, &v) == 0) { + if (virAsprintf(&perms->group, "%ld", v) == -1) { + ret = -ENOMEM; + goto error; + } + } else { + char *name; + + name = virXPathString(conn, "string(./group)", ctxt); + if (!name) { + virStorageReportError(conn, VIR_ERR_XML_ERROR, + "%s", _("malformed group element")); + goto error; + } + + perms->group = name; + } } /* NB, we're ignoring missing labels here - they'll simply inherit */ @@ -815,10 +848,12 @@ virStoragePoolDefFormat(virConnectPtr conn, virBufferAddLit(&buf," <permissions>¥n"); virBufferVSprintf(&buf," <mode>0%o</mode>¥n", def->target.perms.mode); - virBufferVSprintf(&buf," <owner>%d</owner>¥n", - def->target.perms.uid); - virBufferVSprintf(&buf," <group>%d</group>¥n", - def->target.perms.gid); + if (def->target.perms.owner) + virBufferVSprintf(&buf," <owner>%s</owner>¥n", + def->target.perms.owner); + if (def->target.perms.group) + virBufferVSprintf(&buf," <group>%s</group>¥n", + def->target.perms.group); if (def->target.perms.label) virBufferVSprintf(&buf," <label>%s</label>¥n", @@ -1111,10 +1146,12 @@ virStorageVolTargetDefFormat(virConnectPtr conn, virBufferAddLit(buf," <permissions>¥n"); virBufferVSprintf(buf," <mode>0%o</mode>¥n", def->perms.mode); - virBufferVSprintf(buf," <owner>%d</owner>¥n", - def->perms.uid); - virBufferVSprintf(buf," <group>%d</group>¥n", - def->perms.gid); + if (def->perms.owner) + virBufferVSprintf(buf," <owner>%s</owner>¥n", + def->perms.owner); + if (def->perms.group) + virBufferVSprintf(buf," <group>%s</group>¥n", + def->perms.group); if (def->perms.label) diff --git a/src/storage_conf.h b/src/storage_conf.h index 4e35ccb..212e58c 100644 --- a/src/storage_conf.h +++ b/src/storage_conf.h @@ -36,8 +36,8 @@ typedef struct _virStoragePerms virStoragePerms; typedef virStoragePerms *virStoragePermsPtr; struct _virStoragePerms { int mode; - int uid; - int gid; + char *owner; + char *group; char *label; }; -- 1.6.0.6

2 1

[libvirt] [PATCH]: don't harcode buffer for getgrnam_r
by Guido Günther 16 Apr '09

16 Apr '09

Hi, determines the maximum needed buffersize for getgrnam_r using sysconf instead of hardcoding it to 1024 and increases the buffer on ERANGE. The latter is needed since sysconf is allowed to return -1. Furthermore some glibc versions seem to return a too small buffer on amd64 (http://bugs.debian.org/520744) O.k. to apply? Cheers, -- Guido

4 7

[libvirt] [PATCH][take2][0/2] storage: allow alphabetical names in owner/group of permissions
by Ryota Ozaki 16 Apr '09

16 Apr '09

Hi, This patch set allows alphabetical names in owner/group of permissions in storage XMLs. Change from the initial patch: - store owner/group as strings - As a result, dumpxml of StoragePool could return XML as it is specified Note that in the case of StorageVolume, dumpxml always returns numeric owner/group, i.e., uid and gid, because current libvirt does not store parameters of a volume into an external file but collect info of the volume from the present filesystem using fstat(). This behavior may lose original parameters even in the case of uid/gid specified. I'm not sure why only StorageVolume does not create a XML file. Anyone knows? I should say here I don't intend to replace using numeric uid/gid with using alphabetical names. This patch intends just to bring ease of use and identifying what is specified for users (may not for end-users though). And I don't still have the answer for the question 'numbers vs. names, which is better?'. Thanks, ozaki-r

3 2

[libvirt] [PATCH 4/4] VirtualBox support
by Pritesh Kothari 16 Apr '09

16 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patches are organized as below: Patch 0/4: contains sample xml file Patch 1/4: contains diff of files already in libvirt. Patch 2/4: contains new files needed for VirtualBox support. Patch 3/4: contains support for host only and internal network. Patch 4/4: contains support for rdp in libvirt as mentioned by danpb (also had sent it separately earlier) Regards, Pritesh

1 0

[libvirt] [PATCH 3/4] VirtualBox support
by Pritesh Kothari 16 Apr '09

16 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patches are organized as below: Patch 0/4: contains sample xml file Patch 1/4: contains diff of files already in libvirt. Patch 2/4: contains new files needed for VirtualBox support. Patch 3/4: contains support for host only and internal network. Patch 4/4: contains support for rdp in libvirt as mentioned by danpb (also had sent it separately earlier) Regards, Pritesh

1 0

[libvirt] [PATCH 0/4] VirtualBox support
by Pritesh Kothari 16 Apr '09

16 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patches are organized as below: Patch 0/4: contains sample xml file Patch 1/4: contains diff of files already in libvirt. Patch 2/4: contains new files needed for VirtualBox support. Patch 3/4: contains support for host only and internal network. Patch 4/4: contains support for rdp in libvirt as mentioned by danpb (also had sent it separately earlier) Regards, Pritesh

1 0

[libvirt] [PATCH] qemu -drive takes format= not fmt=
by Mark McLoughlin 16 Apr '09

16 Apr '09

Hey, Looks like a simple typo. Original addition of the flag to qemu was here: http://git.kernel.org/?p=virt/qemu/qemu.git;a=commitdiff;h=1e72d3b7 and support added to libvirt by this: http://git.et.redhat.com/?p=libvirt.git;a=commitdiff;h=74ce659266 Cheers, Mark. From: Mark McLoughlin <markmc(a)redhat.com> Subject: [PATCH] qemu -drive takes format= not fmt= Seems like a simple typo - it has been "format=" since the flag was introduced, but we added it as "fmt=". Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> --- src/qemu_conf.c | 2 +- .../qemuxml2argv-disk-drive-cache-v1-none.args | 2 +- .../qemuxml2argv-disk-drive-cache-v1-wb.args | 2 +- .../qemuxml2argv-disk-drive-cache-v1-wt.args | 2 +- .../qemuxml2argv-disk-drive-cache-v2-none.args | 2 +- .../qemuxml2argv-disk-drive-cache-v2-wb.args | 2 +- .../qemuxml2argv-disk-drive-cache-v2-wt.args | 2 +- .../qemuxml2argv-disk-drive-fmt-qcow.args | 2 +- .../qemuxml2argv-disk-drive-shared.args | 2 +- 9 files changed, 9 insertions(+), 9 deletions(-) diff --git a/src/qemu_conf.c b/src/qemu_conf.c index f36c927..6f9e610 100644 --- a/src/qemu_conf.c +++ b/src/qemu_conf.c @@ -1135,7 +1135,7 @@ int qemudBuildCommandLine(virConnectPtr conn, disk->device == VIR_DOMAIN_DISK_DEVICE_DISK) virBufferAddLit(&opt, ",boot=on"); if (disk->driverType) - virBufferVSprintf(&opt, ",fmt=%s", disk->driverType); + virBufferVSprintf(&opt, ",format=%s", disk->driverType); if (disk->cachemode) { const char *mode = diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-none.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-none.args index 67c8e0d..13b5dd5 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-none.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-none.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=off -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=off -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wb.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wb.args index 2b4fd34..2197cd0 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wb.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wb.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=on -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=on -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wt.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wt.args index 67c8e0d..13b5dd5 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wt.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v1-wt.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=off -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=off -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-none.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-none.args index 7e6bea7..f4e5c1a 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-none.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-none.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=none -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=none -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wb.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wb.args index 2fd6b9f..273f68b 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wb.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wb.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=writeback -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=writeback -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wt.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wt.args index 07fe4f7..d5791f0 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wt.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-cache-v2-wt.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=writethrough -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=writethrough -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-fmt-qcow.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-fmt-qcow.args index cc76fa4..577d353 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-fmt-qcow.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-fmt-qcow.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,boot=on,fmt=qcow2 -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,boot=on,format=qcow2 -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb diff --git a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-shared.args b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-shared.args index 67c8e0d..13b5dd5 100644 --- a/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-shared.args +++ b/tests/qemuxml2argvdata/qemuxml2argv-disk-drive-shared.args @@ -1 +1 @@ -LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,fmt=qcow2,cache=off -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,fmt=raw -net none -serial none -parallel none -usb +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -monitor pty -pidfile /nowhere/QEMUGuest1.pid -no-acpi -boot c -drive file=/dev/HostVG/QEMUGuest1,if=ide,index=0,format=qcow2,cache=off -drive file=/dev/HostVG/QEMUGuest2,if=ide,media=cdrom,index=2,format=raw -net none -serial none -parallel none -usb -- 1.6.0.6

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[libvirt] [PATCH] Make SELinuxSecurityDriverProbe() fail on Fedora 10
by Mark McLoughlin 16 Apr '09

16 Apr '09

Running "make check" on F10, I get: libvir: Security Labeling error : SELinuxInitialize: cannot open SELinux virtual domain context file /etc/selinux/targeted/contexts/virtual_domain_context: No such file or directory Failed to start security driverFAIL: seclabeltest Seems virtual_domain_context isn't available on F10. Haven't investigated further, just want to have "make check" pass. Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> --- src/security_selinux.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/src/security_selinux.c b/src/security_selinux.c index ac317d7..c0b4a67 100644 --- a/src/security_selinux.c +++ b/src/security_selinux.c @@ -218,7 +218,13 @@ done: static int SELinuxSecurityDriverProbe(void) { - return is_selinux_enabled() ? SECURITY_DRIVER_ENABLE : SECURITY_DRIVER_DISABLE; + if (!is_selinux_enabled()) + return SECURITY_DRIVER_DISABLE; + + if (!virFileExists(selinux_virtual_domain_context_path())) + return SECURITY_DRIVER_DISABLE; + + return SECURITY_DRIVER_ENABLE; } static int -- 1.6.0.6

3 2

[libvirt] [PATCH 1/1] changes in src/lxc_container.c so that it passes make syntax-check
by Pritesh Kothari 16 Apr '09

16 Apr '09

Hi All, This patch just clean up src/lxc_container.c so that the make syntax-check passes. Regards, Pritesh

2 1

[libvirt] [PATCH] Fix lxc syntax-check failure
by Mark McLoughlin 16 Apr '09

16 Apr '09

>From 7ebf401c747b61b44bdba0aebc85fbead7ec1d12 Mon Sep 17 00:00:00 2001 From: Mark McLoughlin <markmc(a)redhat.com> Date: Thu, 16 Apr 2009 11:36:41 +0100 Subject: Fixes: CHECK: avoid_if_before_free src/lxc_container.c: if (oldroot) VIR_FREE(oldroot) src/lxc_container.c: if (newroot) VIR_FREE(newroot) Makefile.maint: found useless "if" before "free" above and: src/lxc_container.c:317: Makefile.maint: found trailing blank(s) Signed-off-by: Mark McLoughlin <markmc(a)redhat.com> --- src/lxc_container.c | 16 ++++++++-------- 1 files changed, 8 insertions(+), 8 deletions(-) diff --git a/src/lxc_container.c b/src/lxc_container.c index ff115d1..67c66bd 100644 --- a/src/lxc_container.c +++ b/src/lxc_container.c @@ -282,9 +282,11 @@ static int lxcContainerChildMountSort(const void *a, const void *b) static int lxcContainerPivotRoot(virDomainFSDefPtr root) { - int rc; + int rc, ret; char *oldroot = NULL, *newroot = NULL; + ret = -1; + /* root->parent must be private, so make / private. */ if (mount("", "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) { virReportSystemError(NULL, errno, "%s", @@ -312,7 +314,7 @@ static int lxcContainerPivotRoot(virDomainFSDefPtr root) oldroot); goto err; } - + /* Create a directory called 'new' in tmpfs */ if (virAsprintf(&newroot, "%s/new", oldroot) < 0) { virReportOOMError(NULL); @@ -366,15 +368,13 @@ static int lxcContainerPivotRoot(virDomainFSDefPtr root) goto err; } + ret = 0; + +err: VIR_FREE(oldroot); VIR_FREE(newroot); - return 0; - -err: - if (oldroot) VIR_FREE(oldroot); - if (newroot) VIR_FREE(newroot); - return -1; + return ret; } static int lxcContainerPopulateDevices(void) -- 1.6.0.6

2 1

[libvirt] problem to connect to libvirtd as ordinary user
by Sebastian Reitenbach 16 Apr '09

16 Apr '09

Hi, I'm trying to setup an eucalyptus cloud managing my virtual xen nodes. I'm on SLES11, x86_64. I compiled libvirt-0.6.2 with the following configure parameters: ./configure --prefix=/usr --without-storage-iscsi --without-remote --without-sasl --without-openvz --without-storage-disk below the parameters I've set in the /etc/libvirt/libvirt.conf file: listen_tls = 0 listen_tcp = 1 unix_sock_group = "libvirt" unix_sock_ro_perms = "0777" unix_sock_rw_perms = "0777" unix_sock_dir = "/var/run/libvirt" auth_unix_ro = "none" auth_unix_rw = "none" auth_tcp = "none" auth_tls = "none" log_level = 1 log_outputs="0:stderr" as root, I can run "virsh list" or "virsh -c xen+unix:/// list" and it just works, however, I cannot do this as user eucalyptus. The user eucalyptus is a member of the libvirt group. # id eucalyptus uid=1000(eucalyptus) gid=1000(eucalyptus) groups=1000(eucalyptus),0(root),16 (dialout),17(audio),33(video),100(users),1001(libvirt) I ran virsh through strace, to see what happens: strace virsh.bin -c xen+unix:/// list ... open("/proc/xen/privcmd", O_RDWR) = -1 EACCES (Permission denied) ... Shouldn't the permissions of /proc/xen/privcmd be OK due to the libvirt.conf file? However, I changed them, and now the strace output looks like this: chmod 777 /proc/xen/privcmd strace virsh.bin -c xen+unix:/// list ... open("/proc/xen/privcmd", O_RDWR) = 3 ioctl(3, SNDCTL_DSP_RESET, 0x7fff4721a0f0) = 196611 mlock(0x7fff4721a070, 72) = 0 mlock(0x7fff47219f00, 136) = 0 ioctl(3, SNDCTL_DSP_RESET, 0x7fff47219d80) = -1 EACCES (Permission denied) munlock(0x7fff47219f00, 136) = 0 munlock(0x7fff4721a070, 72) = 0 mlock(0x7fff4721a070, 72) = 0 mlock(0x7fff47219f00, 136) = 0 ioctl(3, SNDCTL_DSP_RESET, 0x7fff47219d80) = -1 EACCES (Permission denied) munlock(0x7fff47219f00, 136) = 0 munlock(0x7fff4721a070, 72) = 0 mlock(0x7fff4721a070, 72) = 0 mlock(0x7fff47219f00, 136) = 0 ioctl(3, SNDCTL_DSP_RESET, 0x7fff47219d80) = -1 EACCES (Permission denied) munlock(0x7fff47219f00, 136) = 0 munlock(0x7fff4721a070, 72) = 0 mlock(0x7fff4721a070, 72) = 0 mlock(0x7fff47219f00, 136) = 0 ioctl(3, SNDCTL_DSP_RESET, 0x7fff47219d80) = 0 munlock(0x7fff47219f00, 136) = 0 munlock(0x7fff4721a070, 72) = 0 mlock(0x7fff47219e00, 136) = 0 ioctl(3, SNDCTL_DSP_RESET, 0x7fff47219d80) = 0 munlock(0x7fff47219e00, 136) = 0 close(3) = 0 ... actually, there is no sound card at all, I wonder what the SNDCTL_DSP_RESET is doing there. After the close(3), the virsh is only looking for language to generate the error message: error: failed to connect to the hypervisor Those xen versions are installed: xen-doc-pdf-3.3.1_18546_12-3.1 xen-doc-html-3.3.1_18546_12-3.1 xen-3.3.1_18546_12-3.1 xen-libs-3.3.1_18546_12-3.1 xen-tools-3.3.1_18546_12-3.1 xen-kmp-default-3.3.1_18546_12_2.6.27.19_5-3.1 kernel-xen-base-2.6.27.19-5.1 kernel-xen-2.6.27.19-5.1 xen-devel-3.3.1_18546_12-3.1 any idea what is wrong here? kind regards sebastian

2 2

[libvirt] [Docs] More work on the API and architecture
by Daniel Veillard 15 Apr '09

15 Apr '09

Another patch, incomplete adding a new page api.html[.in] with the goals of describing the main API concepts, architectures, naming conventions, etc ... It includes Dan's graphics and a change of how the stylesheet process the .html.in content allowing to turn <code class='docref'>foo</code> into a link to reference for foo in the API page. Ultimately I should be able to load the API description from the stylesheet and do that link generation automagically without any markup (like all the links in the API reference). Still need to write the drivers and remote sections, and augment some of the APIs entry points, but it's a first step and better in than out. Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

2 2

[libvirt] XML network model type stripped on define.
by Adrian Garay 15 Apr '09

15 Apr '09

Greetings! I am currently testing Centos5.3, KVM-84, libvirt from the Centos default packages and a Vista 32 guest. I am unfortunately experiencing difficulties with the default realtek8139 network driver, the solution for which I've read would be to change the emulated network device type to e1000. When editing the xml file for my guest, I change: <interface type='bridge'> <mac address='00:16:3e:38:a8:ad'/> <source bridge='br0'/> </interface> to: <interface type='bridge'> <mac address='00:16:3e:38:a8:ad'/> <source bridge='br0'/> <model type='e1000'/> </interface> and then doing a: virsh --connect qemu:///system define /etc/libvirt/qemu/vista32.xml The correct guest is updated, but the model type information I've just added is stripped from my XML and I'm once again left with an 8139 emulated nic. According to the command: qemu-kvm -net nic,model=? /dev/null I should be able to use the e1000 driver. My sincerest apologies if this is already known, or I'm missing something terribly obvious. I am new to mailing lists (this would be my first!) Thanks in advance.

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[libvirt] libvirt 0.3.3 and unix_sock_group
by Daniel Labrosse 15 Apr '09

15 Apr '09

Hi All, I've been using libvirt 0..4.4 for a few weeks now. I have unix_sock_group = "mygroup" set so that i can perform non-root management capabilities on the host. I have recently installed a new host running Scientific Linux 5.3 and libvirt 0.3.3 comes as default. First off, there is no libvirtd.conf file included with 0.3.3, so I copied the file from libvirt 0.4.4 (which is running on my Fedora 8 box). I am still unable to get non-root management capabilities (i.e virsh create etc) after a restart of libvirtd. Is this feature supported in libvirt 0.3.3? Perhaps the file format is different between versions and hence unix_sock_group isnt being read correctly? hope you can help. thanks Daniel

2 2

[libvirt] [PATCH] trivial fix for virsh return value bug
by Daniel Veillard 15 Apr '09

15 Apr '09

https://bugzilla.redhat.com/show_bug.cgi?id=495954 virsh ttyconsole [node] always sets a return code of 1 we initialize ret to FALSE, but don't set it to TRUE when the operation succeeds Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

1 1

[libvirt] [PATCH] add some text to http://libvirt.org/drvlxc.html
by Serge E. Hallyn 15 Apr '09

15 Apr '09

--- drvlxc-orig.html 2009-04-15 09:36:48.000000000 -0500 +++ drvlxc.html 2009-04-15 09:44:27.000000000 -0500 @@ -140,7 +140,89 @@ </div> <div id="content"> - <h1>LXC container driver</h1> +<h1>LXC container driver</h1> +<p> +The libvirt LXC driver manages "Linux Containers". Containers are sets of processes +with private namespaces which can (but don't always) look like separate machines, but +do not have their own OS. Here are two example configurations. The first is a very +light-weight "application container" which does not have it's own root image. You would +start it using +</p> + +<h3>Example config version 1</h3> +<p> +<pre> +<domain type='lxc'> + <name>vm1</name> + <memory>500000</memory> + <os> + <type>exe</type> + <init>/bin/sh</init> + </os> + <vcpu>1</vcpu> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/libexec/libvirt_lxc</emulator> + <interface type='network'> + <source network='default'/> + </interface> + <console type='pty' /> + </devices> +</domain> +</pre> +</p> + +<p> +The next example assumes there is a private root filesystem +(perhaps hand-crafted using busybox, or installed from media, +debootstrap, whatever) under /opt/vm-1-root: +</p> +<p> +<pre> +<domain type='lxc'> + <name>vm1</name> + <memory>32768</memory> + <os> + <type>exe</type> + <init>/init</init> + </os> + <vcpu>1</vcpu> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/libexec/libvirt_lxc</emulator> + <filesystem type='mount'> + <source dir='/opt/vm-1-root'/> + <target dir='/'/> + </filesystem> + <interface type='network'> + <source network='default'/> + </interface> + <console type='pty' /> + </devices> +</domain> + +</pre> +</p> + +<p> +In both cases, you can define and start a container using: +<pre> +lxc --connect lxc:/// define v1.xml +lxc --connect lxc:/// start v1.xml +</pre> +and then get a console using: +<pre> +lxc --connect lxc:/// console v1 +</pre> +Now doing 'ps -ef' will only show processes in the container, for +instance. +</p> </div> </div> <div id="footer">

2 1

[libvirt] virsh ttyconsole [node] has rc of 1?
by Darryl L. Pierce 15 Apr '09

15 Apr '09

I have a script that's breaking when trying to get the ttyconsole for a node. The script gets the console by invoking: virsh ttyconsole [nodename] The script also has trap on error enabled, and the above command has a return code of 1. This is causing the script to exit at that point. Is this a bug? Or is there a reason that return code is 1 and not 0? -- Darryl L. Pierce, Sr. Software Engineer @ Red Hat, Inc. Virtual Machine Management - http://www.ovirt.org/ Is fearr Gaeilge bhriste ná Béarla cliste.

2 1

[libvirt] How to prevent libvirt from adding iptables rules?
by Mariano Absatz 15 Apr '09

15 Apr '09

Hi, I'm new to libvirt but not a complete neophite. I'm using libvirt and kvm in ubuntu with "vmbuilder". I'm creating a couple of VMs inside a host that is directly connected to internet with a public routeable address. Since I only have one public address, I won't use bridging. I'm using shorewall (www.shorewall.net) to configure my iptables rules. I intend to use DNAT to route specific ports in the host to one or other VM. With standard masquerading, I give the VMs access to the outside world. At first I used the 'default' network (with a different rfc1918 network)... everything was kinda working until I rebooted the host... at that point I lost connectivity between the outside world and the VMs. From inside the host I had no trouble connecting to the VMs. If I restarted shorewall (which actually cleans all iptables rules and regenerate them according to its configuration) everything works fine. After sending a report and some debugging in the shorewall mailing list, it was clear that libvirt was adding rules to iptables. After reading a bit (http://libvirt.org/formatnetwork.html#examplesPrivate) I created a new network called "isolated". I stopped default (and disabled its autostart), and defined and started isolated. This is the content of isolated.xml: <network> <name>isolated</name> <uuid>51cffbcc-88f5-4edc-a81c-1765c1045691</uuid> <bridge name='virbr%d' stp='on' forwardDelay='0' /> <ip address='10.3.14.1' netmask='255.255.255.0'> <dhcp> <range start='10.3.14.128' end='10.3.14.254' /> </dhcp> </ip> </network> I modified my VMs to use isolated rather than default, but rules keep being added to iptables when libvirt-bin is started. Is there a way to convince libvirt not to add these rules? Feel free to ask for any data that I didn't send here. TIA. -- Mariano Absatz - "El Baby" el.baby(a)gmail.com www.clueless.com.ar -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- An expert is a person who has made all the mistakes that can be made in a very narrow field. Niels Bohr Danish physicist (1885 - 1962) -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- * TagZilla 0.066 * http://tagzilla.mozdev.org

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[libvirt] Libvirt PHP binding
by Radek Hladik 15 Apr '09

15 Apr '09

Hi, I am trying to develop PHP binding for Libvirt API. As discussed previously on the list the best way is to create a ZEND extension. There is a great tutorial on the net ( http://devzone.zend.com/tag/Extension ) and PHP provides a lot of macros and functions to make extension writing easier. I've implemented functions for connecting, listing domains, getting info about domains and node, dumping domain XML, some basic domain life-cycle actions and very basic error reporting. Before moving to other functions I need to solve a few issues :-) The biggest issue is that PHP used from webserver can (and usually does) run multithread. One thread can process more than one request and the threads can run in parallel. PHP/ZEND provides "tools" to solve this. It provides "request-global" variables, resources (containers for objects like file handles or connection pointers) and much more. In single threaded environment (like calling from command line) all these fallback to usual behavior. In addition ZEND has its own memory manager to be able to better manage the memory on per request basis (functions are called emalloc(), efree(),...). One can still use malloc() and free() but this is bypassing the ZEND memory manager. Free()ing emalloced memory or vice versa leads to crash. So one thing is that every memory allocated by libvirt (using malloc()) I need to copy to memory allocated using emalloc(). Also every memory, that would be free()ed by libvirt I need to malloc() and copy from emmaloc()ed memory. The first one is done by simple macro: #define RECREATE_STRING_WITH_E(str_out, str_in) \ str_out = estrndup(str_in, strlen(str_in)); \ free(str_in); The second case I encountered only on authentication callback and I use simple strndup() to copy it for libvirt. When running from command line everything seems to work fine. This is of course singlethreaded and potential resource leaks need not to cause a problem. However when running from webserver, the result is much more interesting. When connecting to qemu:///system (via local socket) using <? libvirt_connect($uri,true); ?> I can crash the libvirt daemon after cca 10 page reloads - sometimes with message Apr 13 15:32:44 kvmtest kernel: libvirtd[8263]: segfault at 4 ip 00000039d7223fc0 sp 00007fa6fbc29a88 error 6 in libdbus-1.so.3.4.0[39d7200000+3c000] in system log, sometimes without any message. (When running the same script from command line it worked for 1000 executions without noticing a problem). When connecting to qemu+tcp:///system using credentials (explained later): <? libvirt_connect($uri,true,Array(VIR_CRED_AUTHNAME=>"fred",VIR_CRED_PASSPHRASE=>"fred")); ?> It works but httpd processes open a lot pipes and after a few hours with page refreshing every 10 sec I even ran into error: [Mon Apr 13 02:40:26 2009] [error] [client 10.38.25.152] PHP Warning: libvirt_connect() unable to make pipe: Too many open files Next issue I am not sure about is callbacks. I need them mainly for authentication. As PHP is intended to run the whole script non-interactively at most times, I've created this solution. When calling the libvirt_connect() PHP function you can provide list of credentials in form of an array Array(VIR_CRED_AUTHNAME=>"fred",VIR_CRED_PASSPHRASE=>"fred"). This PHP array is parsed to C array and this prepopulated array is passed to my authentication callback function. That function receives the requested credential, looks it up in the provided array and returns it. I think this suits more the PHP nature but in future I may provide real callback solution. Little trouble is that libvirt free()s the values returned by callback so I need to copy them to malloc()ed memory. I am not sure about multithread safety of callback functions but I think that if the function only obtains the parameters via cbdata and operates only with them then it should be safe. However sometimes I get error: [Mon Apr 13 14:19:48 2009] [error] [client 10.38.25.152] PHP Warning: libvirt_connect(): Failed to collect auth credentials and I need to restart http daemon for a few times to make it work again. The last trouble is with error callback, where I am not sure whether it is thread safe. I need to call PHP function for reporting error, storing the error in "global" variable for next use and the PHP may even terminate the whole processing of the request... And if you are still reading then I can point you to http://phplibvirt.cybersales.cz/ where you can download the source code and browse the documentation - you can find there list of implemented functions and brief instructions how to install the extension. But be warned it really can crash your libvirt and maybe apache! For completeness: I use Fedora 10 with some rawhide updates: httpd-2.2.11-6.x86_64 php-5.2.9-1.fc11.x86_64 php-devel-5.2.9-1.fc11.x86_64 libvirt-0.6.0-2.fc11.x86_64 qemu-0.9.1-12.fc11.x86_64 libvirt-devel-0.6.0-2.fc11.x86_64 php-cli-5.2.9-1.fc11.x86_64 kvm-83-5.fc10.x86_64 php-common-5.2.9-1.fc11.x86_64 Radek

3 8

[libvirt] [Patch] Fix vcpupin to inactive domains on Xend3.0.3.
by Takahashi Tomohiro 15 Apr '09

15 Apr '09

Hi, I made the patch that corrected the following problem. It is that when I execute the "virsh vcpupin" command to inactive domains on Xend3.0.3, Libvirt outputs the following Segmentation fault. # virsh vcpupin guest_dom 0 0,1,2 Segmentation fault Signed-off-by: Tomohiro Takahashi <takatom(a)jp.fujitsu.com> Thanks, Tomohiro Takahashi --- xm_internal.c.org 2009-04-07 21:50:17.000000000 +0900 +++ xm_internal.c 2009-04-13 20:53:22.000000000 +0900 @@ -1700,7 +1700,8 @@ int xenXMDomainPinVcpu(virDomainPtr doma ret = 0; cleanup: - VIR_FREE(mapstr); + if( *mapstr != '\0' ) + VIR_FREE(mapstr); VIR_FREE(cpuset); xenUnifiedUnlock(priv); return (ret);

2 3

[libvirt] [PATCH] lxc: Add lxcGetHostname()
by Dan Smith 15 Apr '09

15 Apr '09

This patch adds the getHostname method to the lxc driver structure (using the qemu driver's generic code). Apparently virsh started using that method during console attachment recently. Without this implementation, the virsh refused to attach to lxc consoles. Signed-off-by: Dan Smith <danms(a)us.ibm.com> -- Dan Smith IBM Linux Technology Center email: danms(a)us.ibm.com Index: src/lxc_driver.c =================================================================== RCS file: /data/cvs/libvirt/src/lxc_driver.c,v retrieving revision 1.65 diff -u -r1.65 lxc_driver.c --- src/lxc_driver.c 31 Mar 2009 15:47:17 -0000 1.65 +++ src/lxc_driver.c 14 Apr 2009 18:22:45 -0000 @@ -1404,6 +1404,20 @@ return ret; } +static char *lxcGetHostname (virConnectPtr conn) +{ + char *result; + + result = virGetHostname(); + if (result == NULL) { + virReportSystemError (conn, errno, + "%s", _("failed to determine host name")); + return NULL; + } + /* Caller frees this string. */ + return result; +} + /* Function Tables */ static virDriver lxcDriver = { VIR_DRV_LXC, /* the number virDrvNo */ @@ -1413,7 +1427,7 @@ NULL, /* supports_feature */ NULL, /* type */ lxcVersion, /* version */ - NULL, /* getHostname */ + lxcGetHostname, /* getHostname */ NULL, /* getMaxVcpus */ NULL, /* nodeGetInfo */ NULL, /* getCapabilities */

3 2

[libvirt] vcpuinfo returns wrong CPU value for kvm
by Gerrit Slomma 15 Apr '09

15 Apr '09

vcpuinfo returns a wrong value for kvm with libvirt 0.6.2: virsh # nodeinfo CPU-Modell: x86_64 CPU(s): 2 CPU-Frequenz: 2333 MHz CPU-Socket(s): 1 Kern(e) pro Socket: 2 Thread(s) pro Kern: 1 NUMA-Zelle(n): 1 Speichergrösse: 3062956 kB virsh # dominfo rr019v3 Id: 2 Name: rr019v3 UUID: ff1ba599-5801-fca9-ab33-8962c2dfa46c OS Typ: hvm Status: laufend CPU(s): 2 CPU-Zeit: 46,5s Max Speicher: 1572864 kB Verwendeter Speicher: 1572864 kB Automatischer Start: deaktiviert As default a kvm-vm has a affinity on all cpus provided by the node virsh # vcpuinfo rr019v3 VCPU: 0 CPU: 0 Status: laufend CPU-Affinität: yy VCPU: 1 CPU: 0 Status: laufend CPU-Affinität: yy When i set the affinity of the vCPUs to dedicated CPUs of the node vcpuinfo returns CPU 0 as the assigned CPU. virsh # vcpupin rr019v3 0 0 virsh # vcpupin rr019v3 1 1 virsh # vcpuinfo rr019v3 VCPU: 0 CPU: 0 Status: laufend CPU-Affinität: y- VCPU: 1 CPU: 0 Status: laufend CPU-Affinität: -y Furthermore even when pinning all - in my case both - vCPUs of the domain to the second CPU of the node virsh reports the first cpu as the assigned cpu. virsh # vcpupin rr019v3 0 1 virsh # vcpuinfo rr019v3 VCPU: 0 CPU: 0 Status: laufend CPU-Affinität: -y VCPU: 1 CPU: 0 Status: laufend CPU-Affinität: -y Watching at the code in virsh.c i am a little bit on my wits end where virVcpuInfoPtr is defined as i am no c-programmer - only some java on my side. On my xen-machine with libvirt 0.3.3 the CPU is shown correctly though: virsh vcpuinfo rr010v2 VCPU: 0 CPU: 0 Status: blockiert CPU-Zeit: 550,4s CPU-Affinität: y--- VCPU: 1 CPU: 1 Status: blockiert CPU-Zeit: 27,9s CPU-Affinität: -y-- VCPU: 2 CPU: 2 Status: blockiert CPU-Zeit: 31,2s CPU-Affinität: --y- VCPU: 3 CPU: 3 Status: blockiert CPU-Zeit: 49,1s CPU-Affinität: ---y Is this only working with the xen-driver?

2 1

[libvirt] [PATCH] lxc: stop rootless containers from messing with system mounts
by Serge E. Hallyn 15 Apr '09

15 Apr '09

If a container has no root, liblxc remounts /proc. If the system had marked / as MS_SHARED, then even though the container is in a new mounts namespace, the mount event is propagated back to the host mounts namespace, overwriting /proc. After that, for instance, ps will no longer show system processes. A Fedora 11 default install has / MS_SHARED. Make sure that root is not MS_SHARED before remounting /proc. I'm making it MS_SLAVE so that the container will receive mount events from the host, but not vice versa. Signed-off-by: Serge Hallyn <serue(a)us.ibm.com> --- src/lxc_container.c | 11 ++++++++++- 1 files changed, 10 insertions(+), 1 deletions(-) diff --git a/src/lxc_container.c b/src/lxc_container.c index d3959f6..8addd23 100644 --- a/src/lxc_container.c +++ b/src/lxc_container.c @@ -273,7 +273,11 @@ static int lxcContainerChildMountSort(const void *a, const void *b) #endif #ifndef MS_PRIVATE -#define MS_PRIVATE 1<<18 +#define MS_PRIVATE (1<<18) +#endif + +#ifndef MS_SLAVE +#define MS_SLAVE (1<<19) #endif static int lxcContainerPivotRoot(virDomainFSDefPtr root) @@ -558,6 +562,11 @@ static int lxcContainerSetupExtraMounts(virDomainDefPtr vmDef) { int i; + if (mount("", "/", NULL, MS_SLAVE|MS_REC, NULL) < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to make / slave")); + return -1; + } for (i = 0 ; i < vmDef->nfss ; i++) { // XXX fix to support other mount types if (vmDef->fss[i]->type != VIR_DOMAIN_FS_TYPE_MOUNT) -- 1.6.2

2 2

[libvirt] libvirt arch detection on x86_64 host
by Gerry Reno 15 Apr '09

15 Apr '09

I have a 64-bit host that is running a 32-bit OS (Fedora 10). # cat /proc/cpuinfo processor : 0 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9850 Quad-Core Processor stepping : 3 cpu MHz : 2511.416 cache size : 512 KB physical id : 0 siblings : 4 core id : 0 cpu cores : 4 apicid : 0 initial apicid : 0 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs bogomips : 5022.83 clflush size : 64 power management: ts ttp tm stc 100mhzsteps hwpstate processor : 1 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9850 Quad-Core Processor stepping : 3 cpu MHz : 2511.416 cache size : 512 KB physical id : 0 siblings : 4 core id : 1 cpu cores : 4 apicid : 1 initial apicid : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs bogomips : 5023.06 clflush size : 64 power management: ts ttp tm stc 100mhzsteps hwpstate processor : 2 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9850 Quad-Core Processor stepping : 3 cpu MHz : 2511.416 cache size : 512 KB physical id : 0 siblings : 4 core id : 3 cpu cores : 4 apicid : 3 initial apicid : 3 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs bogomips : 5023.06 clflush size : 64 power management: ts ttp tm stc 100mhzsteps hwpstate processor : 3 vendor_id : AuthenticAMD cpu family : 16 model : 2 model name : AMD Phenom(tm) 9850 Quad-Core Processor stepping : 3 cpu MHz : 2511.416 cache size : 512 KB physical id : 0 siblings : 4 core id : 2 cpu cores : 4 apicid : 2 initial apicid : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 5 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs bogomips : 5023.06 clflush size : 64 power management: ts ttp tm stc 100mhzsteps hwpstate # virsh nodeinfo CPU model: i686 CPU(s): 4 CPU frequency: 2511 MHz CPU socket(s): 1 Core(s) per socket: 4 Thread(s) per core: 1 NUMA cell(s): 1 Memory size: 4147340 kB # virsh capabilities <capabilities> <host> <cpu> <arch>i686</arch> </cpu> </host> <guest> <os_type>hvm</os_type> <arch name='i686'> <wordsize>32</wordsize> <emulator>/usr/bin/qemu</emulator> <machine>pc</machine> <machine>isapc</machine> <domain type='qemu'> </domain> <domain type='kvm'> <emulator>/usr/bin/qemu-kvm</emulator> </domain> </arch> <features> <pae/> <nonpae/> <acpi default='on' toggle='yes'/> <apic default='on' toggle='no'/> </features> </guest> <guest> <os_type>hvm</os_type> <arch name='x86_64'> <wordsize>64</wordsize> <emulator>/usr/bin/qemu-system-x86_64</emulator> <machine>pc</machine> <machine>isapc</machine> <domain type='qemu'> </domain> </arch> <features> <acpi default='on' toggle='yes'/> <apic default='on' toggle='no'/> </features> </guest> <guest> <os_type>hvm</os_type> <arch name='mips'> <wordsize>32</wordsize> <emulator>/usr/bin/qemu-system-mips</emulator> <machine>mips</machine> <domain type='qemu'> </domain> </arch> </guest> <guest> <os_type>hvm</os_type> <arch name='mipsel'> <wordsize>32</wordsize> <emulator>/usr/bin/qemu-system-mipsel</emulator> <machine>mips</machine> <domain type='qemu'> </domain> </arch> </guest> <guest> <os_type>hvm</os_type> <arch name='sparc'> <wordsize>32</wordsize> <emulator>/usr/bin/qemu-system-sparc</emulator> <machine>sun4m</machine> <domain type='qemu'> </domain> </arch> </guest> <guest> <os_type>hvm</os_type> <arch name='ppc'> <wordsize>32</wordsize> <emulator>/usr/bin/qemu-system-ppc</emulator> <machine>g3bw</machine> <machine>mac99</machine> <machine>prep</machine> <domain type='qemu'> </domain> </arch> </guest> </capabilities> Shouldn't the host arch have been detected and identified as x86_64? Regards, Gerry

3 3

[libvirt] test driver for interface config
by Laine Stump 15 Apr '09

15 Apr '09

I'm now trying to write the test driver for the interface config driver that I'm putting into libvirt. For comparison I'm using the network driver. My understanding so far is that it calls the functions in the real driver to construct network objects and manipulate them, then just doesn't call the code that makes the changes to the system config. My driver is a bit different, in that I don't need any object management - I just pass everything through to the netcf library, and return the results to the caller; libvirt is just being used as an RPC conduit with some minimal wrapping. What I'm wondering now is exactly what the test driver should be testing - should the test driver also call netcf and return the results, or should it be a minimal interface driver in its own right that, for example, comes up with no interfaces, and allows adding only one? The former (call netcf) is problematic in that many netcf functions make changes to the real live network config (which I don't think is a very nice thing to have in test code, but maybe I'm being over-cautious) and netcf doesn't have provisions for a test mode where changes made to the config aren't committed. In the latter case it seems that not a lot will be tested (just the client side API, and libvirt's RPC - all parameter checking and XML parsing will be done by netcf), although maybe that's all anyone is looking for. I would hesitate to make the driver any more complicated than just allowing a single interface, or do any parameter validation that's normally done by netcf, since then much of the testing would be of code that was only used in the test itself - not very productive. Any advice?

5 19

[libvirt] [PATCH 2/2] VirtualBox support
by Pritesh Kothari 14 Apr '09

14 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patch works very well with the VirtualBox OSE version and the 2.2 release. [PATCH 1/2] contains diff of files already in libvirt. [PATCH 2/2] contains new files needed for VirtualBox support. Regards, Pritesh

3 5

[libvirt] RFC: Import / export of Domain XML from/to native "formats"
by Daniel P. Berrange 14 Apr '09

14 Apr '09

Some of the frequently asked questions I see floating around various user forums / mailing lists wrt libvirt XML, relate the import or export of existing configurations from/to libvirt. eg - What is the libvirt XML matching the QEMU args 'qemu -foo -bar -wiz' - What are the QEMU arguments used by libvirt for XML config XYZ - What is the libvirt XML matching the Xen file XYZ in /etc/xen - What is the Xen config file corresponding to the libvirt XML XYZ When those questions arise, the best we do is point the user at wiki page or XML format docs, sometimes give them some examples, etc It occurred to me that we could do much better than this. We already have code in libvirt that knows how todo - libvirt XML -> QEMU args - libvirt XML -> Xen config file - Xen config file -> libvirt XML - Xen SEXPR -> libvirt XML - libvirt XML -> Xen SEXPR it is not possible to access this functionality directly though - it is used internally via things like the DumpXML / DefineXML commands. It would be helpful to be able to use these conversion functions directly in many cases, to be able to do conversions, without having to actually define a new VM. I did a proof of concept creating some tools - virt-xml-from-qemu-args - virt-xml-to-qemu-args - virt-xml-from-xen-config - virt-xml-to-xen-config - virt-xml-from-xen-sxpr - virt-xml-to-xen-sxpr that just linked directly to the internal conversion APIs. This is a bit of a hack though, and I think it might be preferable to have a formal public API for invoking the conversions, instead of restricting them to a set of command line tools. What I think we could do is: - char *virConnectDomainXMLExport(const char *nativeFormat, const char *xml) Export 'xml' doc from libvirt XML to a config in 'nativeFormat', returning the native config data - char *virConnectDomainXMLImport(const char *nativeFormat, const char *config) Import 'config' data in 'nativeFormat', to libvirt XML, returning the libvirt XML doc The 'nativeFormat' would be a hypervisor specific format. The QEMU driver would initially provide a format called 'qemu-argv'. The Xen driver would provide 2 formats 'xen-xm' and 'xen-sxpr'. Later the QEMU driver might also provide 'qemu-conf' as & when QEMU gets native config file format. Most of the hard code for these functions already exists. The only one missing is the QEMU ARGV -> libvirt XML conversion, but its not too hard to get a basic impl up & running. In virsh, we might expose virsh domxml-export [XMLFILE [CONFIGFILE]] virsh domxml-import [CONFIGFILE [XMLFILE]] Both these would read/write from/to STDIN/STDOUT, if their optional filename args were ommitted. Daniel -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 1

[libvirt] [PATCH] fix build on RHEL and Centos
by Daniel Veillard 14 Apr '09

14 Apr '09

I applied the minimal fix below preventing "make rpm" on those two platforms, except it applies ot libvirt.spec.in, fixes #495610 Daniel --- libvirt.spec.orig 2009-04-13 20:49:11.000000000 -0400 +++ libvirt.spec 2009-04-13 20:49:59.000000000 -0400 @@ -46,6 +46,7 @@ %define with_rhel5 0 %else %define with_rhel5 1 +%define with_polkit 0 %endif -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

1 0

[libvirt] Intro to libvirt-TCK (Technology Compatibility Kit)
by Daniel P. Berrange 14 Apr '09

14 Apr '09

This mail provides a braindump introduction to a testing system I've been working on for libvirt drivers. Also following that is a short guide on how to actually write test cases to give a better flavour of what its all about. Be warned, this is a very long email :-) libvirt TCK : Technology Compatibility Kit =========================================== The libvirt TCK provides a framework for performing testing of the integration between libvirt drivers, the underlying virt hypervisor technology, related operating system services and system configuration. The idea (and name) is motivated by the Java TCK In particular the libvirt TCK is intended to address the following scenarios - Validate that a new libvirt driver is in compliance with the (possibly undocumented!) driver API semantics - Validate that an update to an existing driver does not change the API semantics in a non-compliant manner - Validate that a new hypervisor release is still providing compatability with the corresponding libvirt driver usage - Validate that an OS distro deployment consisting of a hypervisor and libvirt release is configured correctly Thus the libvirt TCK will allow developers, administrators and users to determine the level of compatability of their platform, and evaluate whether it will meet their needs, and get awareness of any regressions that may have occurred since a previous test run In relation to other libvirt testing, the split of responsibiity will be libvirt testsuite (aka $CHECKOUT/tests) - unit testing of specific internal APIs - functional testing of the libvirtd using the 'test'+'remote' drivers - functional testing of the virsh command using the 'test' driver libvirt TCK - functional/integration testing of the 'live' drivers Framework requirements ====================== The libvirt TCK is built using Perl in order to take advantage of the advanced, but yet very simple, testing frameworks available with Perl. Thus the libvirt interactions will all be done via the libvirt Perl bindings, Sys::Virt (or perl-Sys-Virt RPMs) The framework is thus built on the following Perl modules - Test::More - simple framework for writing individual tests - TAP::Harness - simple framework for running sets of tests - Sys::Virt - binding for libvirt API - XML::Writer - module for generating XML documents - XML::Twig - module for parsing XML documents & XPath - Config::Record - module for parsing simple configuration files There are a handful of other modules these depend on, but these are the most important 'top level' modules in use. These is all currently available within Fedora 10, with exception of perl-accessors, perl-TAP-Formatter-HTML. A similar situation existss for RHEL-5 considering modules from EPEL-5 These modules are all well tested, actively maintained parts of Perl / CPAN, so easily available for every other operating system in existance. As a convenience I have published repositories for Fedora 10 and RHEL-5 on x86_64 including these modules. Use the following YUM configs For Fedora 10: [libvirt-tck] name=libvirt TCK baseurl=http://berrange.fedorapeople.org/libvirt-tck/yum-f10/x86_64/ gpgcheck=0 enabled=1 For RHEL-5: [libvirt-tck] name=libvirt TCK baseurl=http://berrange.fedorapeople.org/libvirt-tck/yum-rhel5/x86_64/ gpgcheck=0 enabled=1 NB: These repos assume you have already updated to the latest 0.6.2 libvirt RPM available for the distro in question. Overview of framework structure =============================== For following discussions, it may be convenient to refer to the source code of the framework. This is available from hg clone http://libvirt.org/hg/libvirt-tck First there are a couple of Perl modules to provide assistance when dealing with libvirt / writing tests - Sys::Virt::TCK in lib/Sys/Virt/TCK.pm The core module for connecting to libvirt, creating a clean environment (ie blowing away all existing domains), and generating simple XML configs for guests - Sys::Virt::TCK::DomainBuilder in lib/Sys/Virt/TCK/DomainBuilder.pm A helper for constructing XML configs for guest domains - Sys::Virt::TCK::Capabilities in lib/Sys/Virt/TCK/Capabilities.pm A helper for parsing the libvirt capabilities XML - Sys::Virt::TCK::TAP::XMLFormatter in lib/Sys//Virt/TCK/TAP/XMLFormatter.pm A plugin for TAP::Harness that is able to record all test results in a structured XML document. As mentioned before, the framework is built about Test:More and the TAP::Harness modules from Perl. This already comes with a simple command called 'prove' for running tests & reporting on results. It has a rather baffling array of options, so to make it simpler to run the libvirt TCK, there is a small program - bin/libvirt-tck (installed to /usr/bin/libvirt-tck) Given no arguments, this will connect using the default hypervisor URI and a previously obtained kernel+initrd and run all the tests currently available for the libvirt TCK, and report on failures. It comes witha number of options to alter the output format or choose different configurations. 'man 1 libvirt-tck' will produce details The actual tests themselves are simply short Perl scripts using the Test::More, Sys::Virt and Sys::Virt::TCK modules. Each test decides on what aspect it wants to test, and then implements that logic and tests results. As a demonstration, there are 4 initial scripts - scripts/domain/050-transient-lifecycle.t Creates a guest from XML, destroys it, and then verifies that it has actually gone away. - scripts/domain/060-persistent-lifecycle.t Defines a guest config XML, starts it, destroys it, verifies that the config still exists, and then undefines the config and verifies that it has actually gone. - scripts/domain/070-transient-to-persistent.t Creates a guest from XML, then defines a persistent config for it, destroys the running guest, and then verifies the config is still present. - scripts/domain/080-unique-identifiers.t Defines a guest, and then tries to define / create more guests with clashing name or UUID, and verifies that suitable errors are raised by libvirt. Even these 4 simple proof of concept scripts have highlighted some horrible problems - The QEMU driver 'define domain' method doesn't check for name or UUID uniqueness correctly (well, at all) - After starting an inactive domain, the remote driver does not update the 'ID' field in the virDomainPtr - After destroying a active domain, the remote driver does not update the 'ID' field in the virDomainPtr - When defining a persistent config for an already running domain the Xen XM driver blows away the current 'ID' field for the running domain, replacing it with -1. - QEMU refuses to boot kernel+initrd unless at least one disk image is provided In looking at some other things to test I specifically noticed that there terrible inconsistency in the virErrorPtr error codes used for reporting problems. For each API there needs to be a formal core set of error codes that will always be used for a certain set of conditions. eg, when looking up a domain by name, if no such domain exists the driver *must* always return VIR_ERR_NO_DOMAIN Output information ================== The libvirt-tck tool outputs results in a number of formats. The default format is a simple plain test summary listing each test case, and the pass/fail state, and details of each check failure A more verbose text format otputs the full Perl TAP (Test Anything Protocol) format results as described in 'man 3 TAP' or 'man 3 Test::Harness::TAP'. For producing pretty web pages, it is possible to request an HTML output format. Ultimately though it will be desirable to do automated analysis, and comparison of results across releases, OS, drivers, etc. To assist in creating tools todo this, an XML format is also provided There are some examples of these formats, when run against RHEL-5 Xen, Fedora 10 QEMU (libvirt 0.6.2), and Fedora 10 QEMU (libvirt 0.6.2 plus a bunch of code fixes to make it pass) In pretty HTML format: http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-rhel-5.html http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-f10-broken… http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-f10-fixed.… In full plain text format: http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-rhel-5.txt http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-f10-broken… http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-f10-fixed.… In formal XML format http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-rhel-5.xml http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-f10-broken… http://berrange.fedorapeople.org/libvirt-tck/results/libvirt-tck-f10-fixed.… Running the test suite ====================== For those feeling brave it is possible to try out the current test suite. The best bet is to install the perl-Sys-Virt-TCK RPM from the YUM repos listed above. Then create a config file # cat > /home/fred/qemu.cfg <<EOF uri = "qemu:///session" kernel=/home/fred/vmlinuz initrd=/home/fred/initrd.img disk=/home/fred/empty.img EOF For current tests, it is sufficient to have a kernel + initrd that is able to boot and just sit there being bored. The Fedora 10 PXEboot install kernels suit this job perfectly # wget http://download.fedora.redhat.com/pub/fedora/linux/releases/10/Fedora/x86_6… # wget http://download.fedora.redhat.com/pub/fedora/linux/releases/10/Fedora/x86_6… A empty disk image is need to keep QEMU happy - it won't boot a kernel/initrd without a disk image, so just create a 10 MB image # dd if=/dev/zero of=empty.img bs=1M count=10 Next, start an unprivileged instance of libvirtd, eg as your normal user account # /usr/sbin/libvirtd Now it should be possible to run # libvirt-tck -c /home/fred/qemu.cfg It will no doubt show many failures. To get more information add the -v flag # libvirt-tck -c /home/fred/qemu.cfg -v Or to get XML format # libvirt-tck -c /home/fred/qemu.cfg --format xml What's still todo ================= The code as it stands is the bare minimum to get a proof of concept working for testing of domain APIs for Xen and QEMU drivers. The test suite though is intended to be independant of any driver, and also allow for coverage of all the libvirt APIs. Of the top of my head, some important things that need doing - libvirt-tck-prepare For now it was sufficient to just grab the kernel+initrd from Fedora 10 pxeboot location, but not every kind of virtualization can boot off a kernel + initrd. Older Xen HVM cannot do this. VMWare cannot do this. OpenVZ / LXC have no concept of separate kernels, etc. The libvirt-tck-prepare command would automate the process of setting up some pre-requisite pieces. Specifically it would - Download kernel+initrd.img from a suitable location - Build an bootable ISO image using the kernel+initrd - Create a virtual root filesystem, populated with busybox commands (for LXC/OpenVZ) - Create an empty disk image - Be more intelligent about building domain XML configs. In particular look at the capabilities XML to decide whether to create a config that boots off kernel+initrd vs ISO vs a virtual root filesystem for containers - Add helpers for building network, storage and inteface XML configs - Expand on configuration to allow admin to indicate some resources that can be safely used during tests - A friendly NFS server & some of its exports - A spare disk (eg /dev/sdb) that can be played with and trashed - A spare network interface (or two) that can be played with - A spare PCI device that can be detached from host - A spare USB device that can be detached from host - A path with X GB of free space to play with for storage pool usage - A friendly iSCSI server & some of its targets If any of those resources were not available, the test cases needing them would simply be skipped. This is very easy to cope with in the Test::More framework plan skip_all "no iscsi server available" unless $tck->has_config("iscsi-server"); - Fix up all the horribly broken areas of libvirt that this uncovers. This will entail deciding that the semantics for various edge cases are with each API. Deciding what errors codes need to be formally defined for each API. Figuring out how to implement/fix the neccessary semantics in the drivers. - A way to record specific test failures as 'known broken' for a particular driver / platform combination. - A tool to take an XML report from the TCK, mask out all tests that are 'known broken', and then report on the remaining problems which need fixing. - A tool to compare two XML reports and show interesting differences in functionality, and / or bugs How this might be used ====================== The original motivating goal for this is obviously to improve the overall quality control of libvirt and things it interacts with. There are a number of scenarios in which I see this being used: - Fedora rawhide updates to a release of QEMU => Run the TCK to make sure it didn't break anything (new) in libvirt - Declaring feature freeze for a libvirt release => Run the TCK to determine what state of each driver is. Decide what problems should be release blockers. It is expected that some drivers may have long term failures, due to features that will not be implemented - Released new libvirt => Provide online 'reference' reports for the new libvirt release against various platforms. Allows OS distributors to determine whether their changes cause regressions, or if it is a known-broken item. - App developer looking to understand feature support => Look at the TCK reports for the driver and decide if it implements enough of the functionality to be worth supporting. The key factor I think is that it is unreasonable to expect that the TCK will complete without failures for every libvirt driver, let alone every OS. Some features will simply be impossible to implement for certain platforms. Thus the key is in tracking what areas are known to be broken, to make it possible to identify regressions in areas that are expected to work. The known broken areas may also provide motivation for new feature development in associated tools. libvirt TCK: An introduction to writing tests ============================================= The libvirt TCK provides a framework for testing the correct operation of libvirt drivers and their integration with the host operating system virtualization services. Since the focus is on functional integration testing, the tests and driven from the public libvirt API, closely replicating the kind of usage expected from applications using libvirt. The tests are written in Perl, primarily using the libvirt Perl language bindings (Sys::Virt / perl-Sys-Virt), and the common Test::More framework. The libvirt TCK also provides a number of helper modules to simplify the process of creating interesting tests Output format for a test case ============================= To enable automated reporting and analysis of test results, there is a well defined output format that tests must follow. A single test case consists of a sequence of checks each with a pass/fail status, the aggregate status giving the pass/fail state of the test as a whole. This information is presented in a simple, line oriented text format The general format can be summarized as 1..N ok 1 Description # Directive # Diagnostic not ok 2 Description .... ok N Description The first line here defines the plan, giving the expected number of checks that will be run in the test case. This enables the test harness to determine if a test case crashed / exited earlier than expected without running all checks. Each line starts with a word 'ok' or 'not ok' to indicate state of the check, followed by the check number (assigned incremnetally), and a description of the check performed. Diagnostic comments can be output using a leading '#' to assist in debugging / interpreting the results. A more real example would be 1..4 ok 1 - Input file opened not ok 2 - First line of the input valid ok 3 - Read the rest of the file not ok 4 - Summarized correctly # TODO Not written yet This is more or less all that it is neccessary to know about the output format, though far far more details can be found by reading the Perl documentation for 'TAP' (aka Test Anything Protocol) available either in 'man 3 TAP' or 'man 3 Test::Harness::TAP' depending on the Perl version. Writing tests with a compliant output format ============================================ As if that output format were not simple enough to understand and generate, there are helper modules to make this even easier to deal with. The Perl Test::More module provides a set of useful functions can be invoked to perform checks. The first step is to declare how many checks are intended to be run. This is typically done at time Test::More is imported into the script use Test::More tests => 15; The rest of the test case should be a Perl script that implements the logic you wish to test. At key points throughout the script, checks can be inserted to validate the state. Depending on the type of check desired, there are a number of helper functions available For a simple boolean condition, the 'ok' function can be used ok($boolean, $description); eg my $id = $dom->get_id; ok($id >= 0, "virtual domain ID is greater than or equal to 0"); To compare two pieces of data for equality (or inequality), the 'is'/'isnt' functions are preferred: is($expect, $actual, $description); isnt($expect, $actual, $description); eg my $name = $dom->get_name; is($name, "apache", "virtual domain has name 'apache'"); To compare a list or hash table, then a deep comparison is required. NB, if comparing lists, it will also often be desirable to sort their elements my @domains = sort { $a cmp $b } $conn->list_domains; is_deeply(\@domains, ['apache', 'dns'], $description); Finally to output a diagnostic message, the 'diag' command is suitable diag("Checking that the running guest has an ID > -1"); There are quite a few other variations on these functions, and extensive documentation can be found in the 'Test::More' manual page. Helpers for writing libvirt TCK test checks =========================================== While the above functions are useful for testing simple properties and conditions, they can be a little tedious to use when having to deal with exceptions and objects. The libvirt TCK thus provides a couple of helper functions. The first thing when writing a test is to get a connection to libvirt and make sure the test environment is clean. ie there are no existing guests lieing around. If anything goes wrong here, we need to bail out and not bother with rest of the test. We also want to ensure cleanup when the test case finishes. For this there is a simple boilerplate piece of code that can be included use Sys::Virt::TCK; my $tck = Sys::Virt::TCK->new(); my $conn = eval { $tck->setup(); }; BAIL_OUT "failed to setup test harness: $@" if $@; END { $tck->cleanup if $tck; } Going line by line, this first imports the 'Sys::Virt::TCK' package and its functions. Then it creates an instance of the 'Sys::Virt::TCK' object. Then it runs the 'setup' method to obtain a libvirt connection, catching any error that may be thrown. The fourth line willl abort the entire test if an error occurred during setup. The final line registers a 'END' block which will perform cleanup when Perl exits. When testing APIs, it will often be neccessary to create / define real guest domains with a config. Much of the time the test won't care about the exact config, just wanting a minimal generic domain config that is highly likely to work without error. For such cases, a nice simple API is provided: my $xml = $tck->generic_domain("test")->as_xml; This creates an XML document for a guest that is of the correct OS and domain type to be able to run on the current hypervisor, with a name of 'test', and a single disk. It is possible to set further parameters if required. For example, to set an explicit UUID, give 3 virtual CPUs and turn on ACPI: my $xml = $tck->generic_domain("test")->vcpus(3) ->uuid("11111111-1111-2222-3333-444444444444") ->with_acpi()->as_xml() Notice how it allows for chaining the method calls together to build the domain config, turning it into XML at the last step If testing a method that is expected to return a virtual domain object (ie an instance of Sys::Virt::Domain), the 'ok_domain' helper should be used. This takes 2 or 3 parameters. The first is the code block to be checks, the second is a description and the optional third parameter is the expected name of the guest domain. eg to test domain creation from an XML doc my $dom; ok_domain { $dom = $conn->create_domain($xml) } \ "created a running domain", "test"; This creates a new running guest from '$xml', and checks that it succeeeded and returns a domain object with an expected name of 'test'. If an exception was thrown during guest creation this will be reported as an error. If the guest has the incorrect name, that will also be reported as an error. If testing a method that is expected to thrown an exception and thus not return a value, the 'ok_error' helper should be used. This takes 2 or 3 parameters. The first is the code block to be checked, the second is a description and the optional third parameter is the expected error code. eg to ensure that the guest named 'test' does not exists, and that an error is raised when attempting to do a lookup for it. ok_error { $conn->lookup_domain_by_name("test") } \ "no such domain error raised", \ Sys::Virt::Error:ERR_NO_DOMAIN; This code block attempts to lookup a domain based on its name. For success, it requires that the domain does not exist and that libvirt throws an exception with a code VIR_ERR_NO_DOMAIN. If that does not happen, then a failure will be reported. A real test case example walkthrough ==================================== This example will illustrate how to test operation of persistent virtual domains. Our plan for the test is to run the following sequence of operations - Define a new inactive guest from XML - Start the guest config - Stop the running guest - Undefine the now inactive guest config There will be certain sanity checks at various stages. For example, after starting the guest, it will check that the guest ID is greater than zero. After stopping the guest, it will check the ID is -1. After undefining the guest, it will check that another lookup fails, to validate that it really went away. The first step is to write the core algorithm in Perl code using the Sys::Virt APIs. Very simplified it looks like this my $conn = ...get a libvirt connection... my $xml = "....the xml config..."; my $dom; $dom = $conn->define_domain($xml); $dom->create; $dom->destroy; $dom->undefine; Now it is time to start putting in sanity checks. When defining the domain, it is neccessary to check that returned a real domain object, and that no exception is thrown. The 'ok_domain' method can be used for that. It is also wise to print a diagnostic method before doing anything interesting So the define_domain line turns into diag "Defining inactive domain config again"; ok_domain { $dom = $conn->define_domain($xml) } "defined persistent domain config"; After then starting the domain, the test will check that it has a proper unique ID number. So the 'create' line turns into diag "Starting inactive domain config"; $dom->create; ok($dom->get_id() > 0, "running domain has an ID > 0"); Since this is testing persistent domains, after stopping the running guest, it should still be possible to look it up. Thus the line that stops the guest, gains a check for its ID number, followed by another check that the guest is still present diag "Destroying the running domain"; $dom->destroy(); is($dom->get_id(), -1 , "inactive domain has an ID == -1"); diag "Checking there is still an inactive domain config"; ok_domain { $dom1 = $conn->get_domain_by_name("test") } "the inactive domain object"; Finally, after undefining the guest it is neccessary to validate that it really has gone away, by trying to look it up based on name, and checking that an error is raised diag "Undefining the inactive domain config"; $dom->undefine; ok_error { $conn->get_domain_by_name("test") } \ "NO_DOMAIN error raised from missing domain", \ Sys::Virt::Error::ERR_NO_DOMAIN; The completed example test script ================================= It is good practice to include a short documentation comment in test scripts to outline what the script intends to validate. The Perl POD format is useful for this (see 'man perlpod') for more info. Taking this into account, the complete example script looks like # -*- perl -*- # # Copyright (C) 2009 A N Other =pod =head1 NAME example-persistent-domain.t - Persistent domain lifecycle =head1 DESCRIPTION The test case validates the core lifecycle operations on persistent domains. A persistent domain is one with a configuration enabling it to be tracked when inactive. =cut use strict; use warnings; use Test::More tests => 5; use Sys::Virt::TCK; my $tck = Sys::Virt::TCK->new(); my $conn = eval { $tck->setup(); }; BAIL_OUT "failed to setup test harness: $@" if $@; END { $tck->cleanup if $tck; } my $xml = $tck->generic_domain("test")->as_xml; my $dom; diag "Defining inactive domain config again"; ok_domain { $dom = $conn->define_domain($xml) } "defined persistent domain config"; diag "Starting inactive domain config"; $dom->create; ok($dom->get_id() > 0, "running domain has an ID > 0"); diag "Destroying the running domain"; $dom->destroy(); is($dom->get_id(), -1 , "inactive domain has an ID == -1"); diag "Checking there is still an inactive domain config"; my $dom1; ok_domain { $dom1 = $conn->get_domain_by_name("test") } "the inactive domain object"; diag "Undefining the inactive domain config"; $dom->undefine; ok_error { $conn->get_domain_by_name("test") } \ "NO_DOMAIN error raised from missing domain", \ Sys::Virt::Error::ERR_NO_DOMAIN; Running the test script ======================= Having created the test script it can be run directly using Perl, simply by setting an environment variable pointing to the config file # export LIBVIRT_TCK_CONFIG=/etc/libvirt-tck/xen.cfg # perl example-persistent-domain.t If the libvirt driver being tested were bug-free it would result in the following output 1..5 # Defining inactive domain config again ok 1 - defined persistent domain config # Starting inactive domain config ok 2 - running domain has an ID > 0 # Destroying the running domain ok 3 - inactive domain has an ID == -1 # Checking there is still an inactive domain config ok 4 - the inactive domain object # Undefining the inactive domain config ok 5 - NO_DOMAIN error raised from missing domain If something went wrong, it might look like 1..5 # Defining inactive domain config again ok 1 - defined persistent domain config # Starting inactive domain config not ok 2 - running domain has an ID > 0 # Failed test 'running domain has an ID > 0' # at /home/berrange/ex line 39. # Destroying the running domain libvirt error code: 7, message: invalid domain pointer in no domain with matching id -1 # Looks like you planned 5 tests but only ran 2. # Looks like you failed 1 test of 2 run. # Looks like your test died just after 2. Notice that since the tst script declared upfront that it intended to run 5 checks, Perl was able to detect that it aborted earlier than expected. -- |: Red Hat, Engineering, London -o- http://people.redhat.com/berrange/ :| |: http://libvirt.org -o- http://virt-manager.org -o- http://ovirt.org :| |: http://autobuild.org -o- http://search.cpan.org/~danberr/ :| |: GnuPG: 7D3B9505 -o- F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|

2 2

[libvirt] "state" drivers?
by Laine Stump 14 Apr '09

14 Apr '09

I'm looking through the network driver, and see the "state" driver registered. Several other drivers also register a state driver. What is this used for? It looks like it's handling a startup/shutdown at a more basic level than then open/close in the network (storage/qemu/etc) driver itself. Is it the case that things that should happen only once as libvirtd is loaded/unloaded should be put in the state driver's Startup/shutdown? It seems possible that these callouts may be unnecessary in my case, since I'll be modifying the OS's own interface config, so the interfaces will already be up and running by the time libvirtd starts, and should remaining running after libvirtd is unloaded. (as for initializing/shutting down netcf, this may be useful for shutting it down before exit, but its init should probably only be called on demand if someone actually calls a virInterface* function -otherwise we're using up resources for nothing. Any other guildelines/advice?

2 1

[libvirt] [PATCH 0/1] NPIV support
by David Allan 13 Apr '09

13 Apr '09

This patch implements NPIV support. I don't have easy access to an NPIV capable switch at the moment, so this is all untested code at least from the perspective of whether it actually creates and deletes virtual adapters, but I thought I should get it out to the list for comment sooner rather than later. I'll have a switch shortly. If anybody has an NPIV capable test SAN and wants to test it as well, I'd much appreciate the feedback. Note that libvirt doesn't do any sanity checking of the WWPN/WWNN. It expects the kernel to verify that the names are valid and the calling application to verify that the names are appropriate for the fabric. The XML to create a pool and create the virtual adapter when the pool is started is: <pool type="scsi"> <name>npiv</name> <source> <adapter name="host6" wwpn="0000111122223333" wwnn="4444555566667777"/> </source> <target> <path>/dev/disk/by-id</path> </target> </pool> Stopping the pool deletes the vport. Dave

3 8

[libvirt] [PATCH 1/3] Allow multiple monitor devices
by Anthony Liguori 09 Apr '09

09 Apr '09

Right now only one monitor device can be enabled at a time. In order to support asynchronous notification of events, I would like to introduce a 'wait' command that waits for an event to occur. This implies that we need an additional monitor session to allow commands to still be executed while waiting for an asynchronous notification. Signed-off-by: Anthony Liguori <aliguori(a)us.ibm.com> diff --git a/vl.c b/vl.c index 4bd173f..f78cabb 100644 --- a/vl.c +++ b/vl.c @@ -184,6 +184,9 @@ int main(int argc, char **argv) /* Max number of bluetooth switches on the commandline. */ #define MAX_BT_CMDLINE 10 +/* Maximum number of monitor devices */ +#define MAX_MONITOR_DEVICES 10 + /* XXX: use a two level table to limit memory usage */ #define MAX_IOPORTS 65536 @@ -4252,8 +4255,9 @@ int main(int argc, char **argv, char **envp) int hda_index; int optind; const char *r, *optarg; - CharDriverState *monitor_hd = NULL; - const char *monitor_device; + CharDriverState *monitor_hds[MAX_MONITOR_DEVICES]; + const char *monitor_devices[MAX_MONITOR_DEVICES]; + int monitor_device_index; const char *serial_devices[MAX_SERIAL_PORTS]; int serial_device_index; const char *parallel_devices[MAX_PARALLEL_PORTS]; @@ -4324,7 +4328,6 @@ int main(int argc, char **argv, char **envp) kernel_cmdline = ""; cyls = heads = secs = 0; translation = BIOS_ATA_TRANSLATION_AUTO; - monitor_device = "vc:80Cx24C"; serial_devices[0] = "vc:80Cx24C"; for(i = 1; i < MAX_SERIAL_PORTS; i++) @@ -4340,6 +4343,11 @@ int main(int argc, char **argv, char **envp) virtio_consoles[i] = NULL; virtio_console_index = 0; + monitor_devices[0] = "vc:80Cx24C"; + for (i = 1; i < MAX_MONITOR_DEVICES; i++) + monitor_devices[i] = NULL; + monitor_device_index = 0; + usb_devices_index = 0; nb_net_clients = 0; @@ -4723,7 +4731,12 @@ int main(int argc, char **argv, char **envp) break; } case QEMU_OPTION_monitor: - monitor_device = optarg; + if (monitor_device_index >= MAX_MONITOR_DEVICES) { + fprintf(stderr, "qemu: too many monitor devices\n"); + exit(1); + } + monitor_devices[monitor_device_index] = optarg; + monitor_device_index++; break; case QEMU_OPTION_serial: if (serial_device_index >= MAX_SERIAL_PORTS) { @@ -4974,8 +4987,8 @@ int main(int argc, char **argv, char **envp) serial_devices[0] = "stdio"; if (parallel_device_index == 0) parallel_devices[0] = "null"; - if (strncmp(monitor_device, "vc", 2) == 0) - monitor_device = "stdio"; + if (strncmp(monitor_devices[0], "vc", 2) == 0) + monitor_devices[0] = "stdio"; } #ifndef _WIN32 @@ -5184,14 +5197,14 @@ int main(int argc, char **argv, char **envp) #endif /* Maintain compatibility with multiple stdio monitors */ - if (!strcmp(monitor_device,"stdio")) { + if (!strcmp(monitor_devices[0],"stdio")) { for (i = 0; i < MAX_SERIAL_PORTS; i++) { const char *devname = serial_devices[i]; if (devname && !strcmp(devname,"mon:stdio")) { - monitor_device = NULL; + monitor_devices[0] = NULL; break; } else if (devname && !strcmp(devname,"stdio")) { - monitor_device = NULL; + monitor_devices[0] = NULL; serial_devices[i] = "mon:stdio"; break; } @@ -5208,11 +5221,20 @@ int main(int argc, char **argv, char **envp) } } - if (monitor_device) { - monitor_hd = qemu_chr_open("monitor", monitor_device, NULL); - if (!monitor_hd) { - fprintf(stderr, "qemu: could not open monitor device '%s'\n", monitor_device); - exit(1); + for (i = 0; i < MAX_MONITOR_DEVICES; i++) { + const char *devname = monitor_devices[i]; + if (devname && strcmp(devname, "none")) { + char label[32]; + if (i == 0) + snprintf(label, sizeof(label), "monitor"); + else + snprintf(label, sizeof(label), "monitor%d", i); + monitor_hds[i] = qemu_chr_open(label, devname, NULL); + if (!monitor_hds[i]) { + fprintf(stderr, "qemu: could not open monitor device '%s'\n", + devname); + exit(1); + } } } @@ -5335,8 +5357,13 @@ int main(int argc, char **argv, char **envp) text_consoles_set_display(display_state); qemu_chr_initial_reset(); - if (monitor_device && monitor_hd) - monitor_init(monitor_hd, MONITOR_USE_READLINE | MONITOR_IS_DEFAULT); + for (i = 0; i < MAX_MONITOR_DEVICES; i++) { + if (monitor_devices[i] && monitor_hds[i]) { + monitor_init(monitor_hds[i], + MONITOR_USE_READLINE | + ((i == 0) ? MONITOR_IS_DEFAULT : 0)); + } + } for(i = 0; i < MAX_SERIAL_PORTS; i++) { const char *devname = serial_devices[i];

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Re: [Qemu-devel] Re: [libvirt] Re: [PATCH 2/3] Introduce monitor 'wait' command
by Anthony Liguori 09 Apr '09

09 Apr '09

Paul Brook wrote: >> It has to be some finite amount. You're right, it's arbitrary, but so >> is every other memory limitation we have in QEMU. You could make it >> user configurable but that's just punting the problem. >> >> You have to do some level of buffering. It's unavoidable. If you >> aren't buffering at the event level, you buffer at the socket level, etc. >> > > No you don't. If you use event flags rather than discrete events then you > don't need to buffer at all. You just need to be able to store the state of > each type of event you're going to raise, which should be a bounded set. > > This has its own set of issues - typically race conditions or "lost" events if > the client (libvirt) code isn't written carefully, and means you can't attach > information with an event, only indicate that something happened. > However if the correct model is used (event driven polling rather than purely > event driven) this shouldn't be problem. > It's just deferring the problem. Consider the case of VNC user authentication. You want to have events associated with whenever a user connects and disconnects so you can keep track of who's been on a virtual machine for security purposes. In my model, you record the last 10 minutes worth of events. If a user aggressively connects/reconnects, you could consume a huge amount of memory. You could further limit it by recording only a finite number of events to combat that problem. In your model, the VNC server triggers a user-connected event and a user-disconnected event. This bits are constantly reset which is fine. When libvirt gets around to seeing the events, it know wants to know who's been connecting/disconnecting. Either you show only the current user, which is not terribly useful, or you have the VNC server queue a list of the most recent user connects/disconnects. The problem with this model is that by pushing the queuing to the event generators, you end open up the possibility that someone is going to get something wrong. It's just more places to do it poorly. Regards, Anthony Liguori > Paul >

2 1

Re: [Qemu-devel] Re: [libvirt] Re: [PATCH 2/3] Introduce monitor 'wait' command
by Avi Kivity 09 Apr '09

09 Apr '09

Paul Brook wrote: > No you don't. If you use event flags rather than discrete events then you > don't need to buffer at all. You just need to be able to store the state of > each type of event you're going to raise, which should be a bounded set. > > This has its own set of issues - typically race conditions or "lost" events if > the client (libvirt) code isn't written carefully, and means you can't attach > information with an event, only indicate that something happened. > However if the correct model is used (event driven polling rather than purely > event driven) this shouldn't be problem. > I agree. Every event notification should be readable with an info command. The best way to enforce it is to have the event just say 'something changed' and force the management app to issue an info command to find out what exactly. -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.

1 0

[libvirt] Problems using unix_sock_group
by Niraj Tolia 09 Apr '09

09 Apr '09

Hi, I am sure I am missing something simple but I can't seem to figure it out. I am trying to allow a non-root user rw access to libvirt 0.6.2. The user is a member of the libvirtd group, unix_sock_group="libvirtd", and unix_sock_rw_perms=0770. However, 'virsh list' doesn't seem to work. The permissions seem correct srwxrwx--- 1 root libvirtd 0 2009-04-08 17:32 libvirt-sock srwxrwxrwx 1 root libvirtd 0 2009-04-08 17:32 libvirt-sock-ro When I strace 'virsh list', it doesn't attempt to connect to /usr/local/var/run/libvirt/libvirt-sock but when I strace 'virsh --readonly list', it successfully connects to the "-ro" socket. configure reported that polkit wasn't configured. This is on a system with Xen. Any ideas on what I might be doing wrong? Thanks, Niraj

1 0

[libvirt] 0.6.2: git mirror tagged, too
by Jim Meyering 08 Apr '09

08 Apr '09

Mark McLoughlin mentioned that the LIBVIRT_0_6_2 tag was not automatically mirrored into the git tree, so I've added it. I also added a signed tag on the same change set. Among other things, that makes it so that "git describe" now generates sensible output for recent changes. But adding all the rest would be nice, too, so I did it with this for tag in $(git tag -l 'LIBVIRT_0_[0-5]*'); do v=$(echo $tag|sed 's/LIBVIRT_/v/;s/_/./g') git tag -s -m $v $v $tag done and pushed those tags.

1 0

[libvirt] migration by libvirt
by Zvi Dubitzky 08 Apr '09

08 Apr '09

Using libvirt virDomainMigrate () do I have to set the target VM with same XML config as the source VM machine before the migrate starts or the source machine Host libvirt takes care of this preparation before it starts the live migration. I am talking about the equivalent of a tcp migration as defined per the qemu/kvm migrate command done via the qemu monitor thanks Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL

2 1

[libvirt] Re: [PATCH] Hardware watchdog patch, version 6 (was: Re: [Qemu-devel] [PATCH] Hardware watchdog patch, version 5)
by Hollis Blanchard 08 Apr '09

08 Apr '09

Hi Rich, your watchdog qemu patch is working fine for me (i6300esb, default reset behavior), but I was wondering... how should libvirt find out about the watchdog firing? At that point, I think the next step from libvirt is to send a VIR_DOMAIN_EVENT_STOPPED_CRASHED domain event, correct? -- Hollis Blanchard IBM Linux Technology Center

4 4

[libvirt] Changing the QEMU svn VERSION string
by Anthony Liguori 08 Apr '09

08 Apr '09

Hi, I'd like to update the VERSION string in QEMU's svn tree. Right now, it's 0.10.0 and since we have a 0.10.2 release, that's somewhat confusing. I don't want to make it 0.11.0 either because that's not going to be reliable from a feature detection perspective. What I would like is to make it 0.11.0-devel or something similar to that. Being the nice guy I am, I thought I would check that this didn't make libvirt go bonkers :-) This is the relevant detection code in libvirt: if (sscanf(help, "QEMU PC emulator version %u.%u.%u (kvm-%u)", &major, &minor, &micro, &kvm_version) != 4) kvm_version = 0; if (!kvm_version && sscanf(help, "QEMU PC emulator version u.%u.%u", &major, &minor, &micro) != 3) goto cleanup2; If I change SVN to 0.11.0-devel, that's going to break the KVM string although the QEMU string will continue to work. Avi could potentially carry a patch to keep it 0.10.x and since kvm-%u will be used to identify features, that should keep things working. Anyone have any objections/suggestions? Regards, Anthony Liguori

7 10

[libvirt] Thoughts on svirt configuration files.
by Daniel J Walsh 08 Apr '09

08 Apr '09

Currently we do not want to hard code virtual image names into libvirt, so libvirt and virtual-manager can use libselinux to get the default image label and process label. svirt_t and svirt_image_t. The idea was one policy writer might want his virtual images labeled differently than another. One problem with this is I added to interfaces one for the domain, and one for the image label. Now we realize we have other images. We have process Label - svirt_t:MCS Exclusive RW Image - svirt_image_t:MCS Shared RW Image - svirt_image_t:s0 Read Only Image - virt_content_t:s0 So I am suggesting that we remove the virtual_image_context file and allowing policy writers to define context in the virtual_domain_context files but have multiple records and multiple fields. Something like a space separated list where each field corresponds to above. system_u:system_r:svirt_t:s0 system_u:object_r:svirt_image_t:s0 system_u:object_r:svirt_image_t:s0 system_u:object_r:virt_content_t:s0 Then you could add optional types with similar fields system_u:system_r:svirt_nonet_t:s0 system_u:object_r:svirt_image_t:s0 system_u:object_r:svirt_image_t:s0 system_u:object_r:virt_content_t:s0 Since SELinux just returns a path, the virt team could choose the format of the file if a space separated list is not addequate. (xml?) Name Value Pairs? Policy writers would have to enter the format that is chosen. Thoughts? I am thinking we might eventually want to allow an admin to select dynamic labels but specify alternative types. So svirt_t would be default but if someone wanted svirt_nonet_t, they could choose that also and get separation with a different type.

2 2

[libvirt] [PATCH 1/2] VirtualBox support
by Pritesh Kothari 08 Apr '09

08 Apr '09

Hi All, I have attached a patch which when applied on the HEAD as of today would allow virtualbox support in libvirt. It takes cares of all the stuff mentioned on the list earlier. Still if I have missed anything, please do tell me. The patch works very well with the VirtualBox OSE version and the 2.2 release. [PATCH 1/2] contains diff of files already in libvirt. [PATCH 2/2] contains new files needed for VirtualBox support. Regards, Pritesh

1 0

[libvirt] [PATCH] lxc: fix veth off by 1 error
by Serge E. Hallyn 08 Apr '09

08 Apr '09

When not specifying a target for veth device, veth.c:getFreeVethName() is supposed to scan for unused veth devices in /sys/class/net. However, when it finds one, it bumps the index by one before returning it. So, if you have one container running, veth0 is passed into the container, veth1 is taken and still sitting in /sys/class/net. When you now start a second container, getFreeVethName() finds veth0 is unused, but returns 1. Now container creation dies becuase /sys/class/net/veth1 exists. Signed-off-by: Serge Hallyn <serue(a)us.ibm.com> --- src/veth.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-) diff --git a/src/veth.c b/src/veth.c index 93173e4..90c1dcb 100644 --- a/src/veth.c +++ b/src/veth.c @@ -35,12 +35,12 @@ static int getFreeVethName(char *veth, int maxLen, int startDev) { int rc = -1; - int devNum = startDev; + int devNum = startDev-1; char path[PATH_MAX]; do { - snprintf(path, PATH_MAX, "/sys/class/net/veth%d/", devNum); ++devNum; + snprintf(path, PATH_MAX, "/sys/class/net/veth%d/", devNum); } while (virFileExists(path)); snprintf(veth, maxLen, "veth%d", devNum); @@ -97,6 +97,7 @@ int vethCreate(char* veth1, int veth1MaxLen, while ((1 > strlen(veth2)) || STREQ(veth1, veth2)) { vethDev = getFreeVethName(veth2, veth2MaxLen, vethDev); + ++vethDev; DEBUG("assigned veth2: %s", veth2); } -- 1.6.2

2 1

[libvirt] [PATCH 0/1] Trigger SCSI scans on pool refresh
by David Allan 07 Apr '09

07 Apr '09

This patch is a small piece of code that causes the SCSI midlayer to rescan all targets for new LUs by echoing "- - -" into /sys/class/scsi_host/hostN/scan It does not attempt to cause a LIP to be issued. Dave

4 6

[libvirt] [PATCH] lxc: make the pivot_root more robust.
by Serge E. Hallyn 07 Apr '09

07 Apr '09

libvirt/lxc is broken on F11. The pivot_root() call returns -EINVAL. The below is one way we can fix it. I'm also sending another patch which takes the simpler approach of using chroot. However, chroot is trivially escapable (see for instance http://www.linuxsecurity.com/content/view/117632/49/) I don't know whether the typical libvirt user would care. If so, then the below patch is probably the way to go. >From 26cac415771a2d9712af0e1ce60a0bcb41b44665 Mon Sep 17 00:00:00 2001 From: root <root(a)localhost.localdomain> Date: Sat, 4 Apr 2009 22:49:20 -0400 Subject: [PATCH 1/1] lxc: make the pivot_root more robust. The libvirt lxc driver uses pivot_root instead of chroot, because the latter is trivially escapable. However, the pivot_root(2) system call can fail for several subtle reasons. Depending upon your distro init sequence you may get lucky and have the old recipe work, but on a Fedora 11 standard install, for instance, it will fail. Do a few more steps to make pivot_root hopefully always succeed. We mark / as MS_PRIVATE, create an empty tmpfs, and bind-mount the container root onto /new in that fs. In this way, we ensure two reasons for pivot_root to fail - namely old_root->parent being MS_SHARED and old_root and new_root being on the same fs - won't happen. Signed-off-by: Serge Hallyn <serue(a)us.ibm.com> --- src/lxc_container.c | 108 ++++++++++++++++++++++++++++++++++++++++----------- 1 files changed, 85 insertions(+), 23 deletions(-) diff --git a/src/lxc_container.c b/src/lxc_container.c index 3f17b8d..d3959f6 100644 --- a/src/lxc_container.c +++ b/src/lxc_container.c @@ -264,50 +264,113 @@ static int lxcContainerChildMountSort(const void *a, const void *b) return strcmp(*sb, *sa); } +#ifndef MS_REC +#define MS_REC 16384 +#endif + +#ifndef MNT_DETACH +#define MNT_DETACH 0x00000002 +#endif + +#ifndef MS_PRIVATE +#define MS_PRIVATE 1<<18 +#endif + static int lxcContainerPivotRoot(virDomainFSDefPtr root) { int rc; - char *oldroot; + char *oldroot = NULL, *newroot = NULL; - /* First step is to ensure the new root itself is - a mount point */ - if (mount(root->src, root->src, NULL, MS_BIND, NULL) < 0) { - virReportSystemError(NULL, errno, - _("failed to bind new root %s"), - root->src); - return -1; + /* root->parent must be private, so make / private. */ + if (mount("", "/", NULL, MS_PRIVATE|MS_REC, NULL) < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to make root private")); + goto err; } if (virAsprintf(&oldroot, "%s/.oldroot", root->src) < 0) { virReportOOMError(NULL); - return -1; + goto err; } if ((rc = virFileMakePath(oldroot)) < 0) { virReportSystemError(NULL, rc, _("failed to create %s"), oldroot); - VIR_FREE(oldroot); - return -1; + goto err; + } + + /* Create a tmpfs root since old and new roots must be + * on separate filesystems */ + if (mount("", oldroot, "tmpfs", 0, NULL) < 0) { + virReportSystemError(NULL, errno, + _("failed to mount empty tmpfs at %s"), + oldroot); + goto err; + } + + /* Create a directory called 'new' in tmpfs */ + if (virAsprintf(&newroot, "%s/new", oldroot) < 0) { + virReportOOMError(NULL); + goto err; + } + + if ((rc = virFileMakePath(newroot)) < 0) { + virReportSystemError(NULL, rc, + _("failed to create %s"), + newroot); + goto err; + } + + /* ... and mount our root onto it */ + if (mount(root->src, newroot, NULL, MS_BIND|MS_REC, NULL) < 0) { + virReportSystemError(NULL, errno, + _("failed to bind new root %s into tmpfs"), + root->src); + goto err; + } + + /* Now we chroot into the tmpfs, then pivot into the + * root->src bind-mounted onto '/new' */ + if (chroot(oldroot) < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to chroot into tmpfs")); + goto err; + } + + if (chdir("/new") < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to chdir into /new on tmpfs")); + goto err; } /* The old root directory will live at /.oldroot after * this and will soon be unmounted completely */ - if (pivot_root(root->src, oldroot) < 0) { - virReportSystemError(NULL, errno, - _("failed to pivot root %s to %s"), - oldroot, root->src); - VIR_FREE(oldroot); - return -1; + if (pivot_root(".", ".oldroot") < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to pivot root")); + goto err; } - VIR_FREE(oldroot); /* CWD is undefined after pivot_root, so go to / */ - if (chdir("/") < 0) { - return -1; + if (chdir("/") < 0) + goto err; + + if (umount2(".oldroot", MNT_DETACH) < 0) { + virReportSystemError(NULL, errno, "%s", + _("failed to lazily unmount old root")); + goto err; } + VIR_FREE(oldroot); + VIR_FREE(newroot); + return 0; + +err: + if (oldroot) VIR_FREE(oldroot); + if (newroot) VIR_FREE(newroot); + return -1; } static int lxcContainerPopulateDevices(void) @@ -349,10 +412,9 @@ static int lxcContainerPopulateDevices(void) _("cannot create /dev/pts")); return -1; } - if (mount("/.oldroot/dev/pts", "/dev/pts", NULL, - MS_MOVE, NULL) < 0) { + if (mount("devpts", "/dev/pts", "devpts", 0, NULL) < 0) { virReportSystemError(NULL, errno, "%s", - _("failed to move /dev/pts into container")); + _("failed to mount /dev/pts in container")); return -1; } -- 1.6.2

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[libvirt] [PATCH] lxc: use chroot instead of pivot_root
by Serge E. Hallyn 06 Apr '09

06 Apr '09

This is an alternative to the pivot_root patch which I just sent. It has the advantage of being much simpler. It also won't have a problem with the container's / being a read-only mount. It has the disadvantage, of course, of being escapable. >From a91bca7f60f27e8fbdb4e3bacf3232a6cbb630d3 Mon Sep 17 00:00:00 2001 From: root <root(a)localhost.localdomain> Date: Fri, 3 Apr 2009 23:35:24 -0400 Subject: [PATCH 1/1] lxc: use chroot instead of pivot_root pivot_root is too fragile. For instance, if the container's / is read-only, we can't create .oldroot. Maybe we're happy telling users that if they can't create .oldroot at container create time, then they must make sure it exists ahead of time. Or, maybe we're ok with chroot being escapable, and should just go this simple route. Signed-off-by: Serge Hallyn <serue(a)us.ibm.com> --- src/lxc_container.c | 75 +++++++++++++-------------------------------------- 1 files changed, 19 insertions(+), 56 deletions(-) diff --git a/src/lxc_container.c b/src/lxc_container.c index 3f17b8d..142ed4d 100644 --- a/src/lxc_container.c +++ b/src/lxc_container.c @@ -264,52 +264,6 @@ static int lxcContainerChildMountSort(const void *a, const void *b) return strcmp(*sb, *sa); } -static int lxcContainerPivotRoot(virDomainFSDefPtr root) -{ - int rc; - char *oldroot; - - /* First step is to ensure the new root itself is - a mount point */ - if (mount(root->src, root->src, NULL, MS_BIND, NULL) < 0) { - virReportSystemError(NULL, errno, - _("failed to bind new root %s"), - root->src); - return -1; - } - - if (virAsprintf(&oldroot, "%s/.oldroot", root->src) < 0) { - virReportOOMError(NULL); - return -1; - } - - if ((rc = virFileMakePath(oldroot)) < 0) { - virReportSystemError(NULL, rc, - _("failed to create %s"), - oldroot); - VIR_FREE(oldroot); - return -1; - } - - /* The old root directory will live at /.oldroot after - * this and will soon be unmounted completely */ - if (pivot_root(root->src, oldroot) < 0) { - virReportSystemError(NULL, errno, - _("failed to pivot root %s to %s"), - oldroot, root->src); - VIR_FREE(oldroot); - return -1; - } - VIR_FREE(oldroot); - - /* CWD is undefined after pivot_root, so go to / */ - if (chdir("/") < 0) { - return -1; - } - - return 0; -} - static int lxcContainerPopulateDevices(void) { int i; @@ -349,10 +303,9 @@ static int lxcContainerPopulateDevices(void) _("cannot create /dev/pts")); return -1; } - if (mount("/.oldroot/dev/pts", "/dev/pts", NULL, - MS_MOVE, NULL) < 0) { + if (mount("devpts", "/dev/pts", "devpts", 0, NULL) < 0) { virReportSystemError(NULL, errno, "%s", - _("failed to move /dev/pts into container")); + _("failed to mount /dev/pts in container")); return -1; } @@ -461,15 +414,25 @@ static int lxcContainerUnmountOldFS(void) } -/* Got a FS mapped to /, we're going the pivot_root - * approach to do a better-chroot-than-chroot - * this is based on this thread http://lkml.org/lkml/2008/3/5/29 - */ -static int lxcContainerSetupPivotRoot(virDomainDefPtr vmDef, +/* Got a FS mapped to /, now chroot. + * pivot_root would work, but requires too much hand-holding + * (especially, old_root->parent must not be shared) */ +static int lxcContainerSetupChroot(virDomainDefPtr vmDef, virDomainFSDefPtr root) { - if (lxcContainerPivotRoot(root) < 0) + if (chdir(root->src) < 0) { + virReportSystemError(NULL, errno, + _("failed to chdir to %s"), + root->src); + return -1; + } + + if (chroot(root->src) < 0) { + virReportSystemError(NULL, errno, + _("failed to chroot to %s"), + root->src); return -1; + } if (virFileMakePath("/proc") < 0 || mount("none", "/proc", "proc", 0, NULL) < 0) { @@ -537,7 +500,7 @@ static int lxcContainerSetupMounts(virDomainDefPtr vmDef) } if (root) - return lxcContainerSetupPivotRoot(vmDef, root); + return lxcContainerSetupChroot(vmDef, root); else return lxcContainerSetupExtraMounts(vmDef); } -- 1.6.2

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[libvirt] VM cpuTime discrepancy
by Zvi Dubitzky 06 Apr '09

06 Apr '09

The cpuTime of a VM reported by kvm72 is ok (real seconds ) while that reported by kvm-84 is not. Are you aware of this . Did you talk to kvm and was it fixed in latest kvm releases since 84 ? I access cpuTime via libvirt . (same version in both cases) . thanks Zvi Dubitzky Virtualization and System Architecture Email:dubi@il.ibm.com IBM Haifa Research Laboratory Phone: +972-4-8296182 Haifa, 31905, ISRAEL

1 0

[libvirt] libvirt.org down
by Daniel Veillard 06 Apr '09

06 Apr '09

As Jim found out there is a problem on the libvirt.org box, I don't know exactly what's is going on, and I will go anc check the box tomorrow at 7am EST. Sorry for the inconvenience, and thanks Jim for raising the issue ! Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

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[libvirt] win32
by Brecht Sanders 06 Apr '09

06 Apr '09

Hi, Is there any way to compile libvirt with xen some support without depending on libxenstore? The reason I ask is that libxen can be built on Windows, but libxenstore seems to depend on the linux kernel, so I doubt it can be built for Windows. Regards Brecht Sanders

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[libvirt] [PATCH] Openvz: how to use a nondefault config
by Anton Protopopov 06 Apr '09

06 Apr '09

2009/4/2 Daniel P. Berrange <berrange(a)redhat.com> > On Thu, Apr 02, 2009 at 06:36:15PM +0400, Evgeniy Sokolov wrote: > > > > Config /etc/vz/conf/ve-XXX.conf-sample define there are many parameters > > like memory, CPU etc. This parameters are not properties of > <filesystem>. > > > > Daniel, usage of pre-defined configs in really usefull. Can we create > > additional tag inside <domain></domain>? > > The trouble with this is that given the XML config of a guest, you can > no longer determine what its configuration is, because a large amount > of configuration is hidden in this opaque 'template'. And in kvm/qemu case there is a lot of hidden information too :) In OpenVZ case we don't loose any info (see below). > > If we're to support templates, I think we need to make them first class > objects, so you can query what templates exist, and see their associated > config settings. > > eg, expose a simple API > > virDomainTemplatePtr; > > int virConnectListDomainTemplates(virConnectPtr conn, const char > **names); > virDomainTemplatePtr virDomainTemplateLookupbyName(virConnectPtr con, > const char *name) > char *virDomainTemplateGetXMLDesc(virDomainTemplatePtr tmpl); > virDomainTemplatePtr virDomainTemplateDefineXML(virConnectPtr conn, const > char *xml) > int virDomainTemplateUndefine(virDomainTemplatePtr tmpl); > int virDomainTemplateFree(virDomainTemplatePtr tmpl); > > > Then, we could either include a <template>$NAME</template> parameter in > the XML for a guest. Or have an alternate API for creating guests > > virDomainCreateXMLWithTemplate(virConnectPtr conn, > const char *xmlDesc, > const char *template) > > It depends whether we'd want to track the template <-> guest association > forever, or just use it once to fill-in the guest XML and then forget > about the template after that. It doesn't matter in OpenVZ case: template (or, "config", in openvz terminology) is used only once, when container is creating. But then per-container "copy" is created, and it is already used by libvirt to keep information about container. Per-container OpenVZ config keeps the name of the original config (in ORIGIN_SAMPLE variable). Is there need for "Template API" in case of other hypervisors?

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[libvirt] Planning and schedule
by Daniel Veillard 06 Apr '09

06 Apr '09

Trying to keep up the promises from last week: - so 0.6.2 is released and out - I still plan for a new release 0.6.3 around Fri 24 April - which mean we should have some kind of feature commit freeze around the 17th April - and the week 20 - 24 focusing mostly on bug fixes Plannned so far for 0.6.3 are: - API for physical host interface - the VirtualBox driver if in shape and in time but that's not an exhaustive list and there is a couple of drivers submitted I need to look at (OpenNebula for example). And I will provide an update next Friday, Daniel -- Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ daniel(a)veillard.com | Rpmfind RPM search engine http://rpmfind.net/ http://veillard.com/ | virtualization library http://libvirt.org/

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[libvirt] pypxeboot - libvirt
by Gian Mario 06 Apr '09

06 Apr '09

Hi to all, Can anyone tell me on which version libvirt start to support pypxeboot? tnks so much. GMario

1 0

[libvirt] freecell gives out bytes instead of kilobytes
by Gerrit Slomma 03 Apr '09

03 Apr '09

The virsh-command freecell hands out bytes but affixes those with kB. The error ist found in virsh.c on line 1663 and following. I have corrected this and altered the output to the method i chose for virt-manager - in the days of 96 GB per socket (Nehalem-EP) no one cares even about a fraction of a Megabyte. --- a/src/virsh.c 2009-04-02 17:45:50.000000000 +0200 +++ b/src/virsh.c 2009-04-02 23:35:54.000000000 +0200 @@ -1661,10 +1661,23 @@ } if (cell == -1) - vshPrint(ctl, "%s: %llu kB\n", _("Total"), memory); + if (memory < 10*1024*1204*1024) + { + vshPrint(ctl, "%s: %.0f MB\n", _("Total"), (float)memory/1024/1024); + } + else + { + vshPrint(ctl, "%s: %.2f GB\n", _("Total"), (float)memory/1024/1024/1024); + } else - vshPrint(ctl, "%d: %llu kB\n", cell, memory); - + if (memory < 10*1024*1204*1024) + { + vshPrint(ctl, "%d: %.0f MB\n", cell, (float)memory/1024/1024); + } + else + { + vshPrint(ctl, "%d: %.2f GB\n", cell, (float)memory/1024/1024/1024); + } return TRUE; } eg: rr016# virsh freecell; free -m 0: 24 MB total used free shared buffers cached Mem: 3884 3859 24 0 60 1306 -/+ buffers/cache: 2492 1392 Swap: 2047 248 1798 rr017# virsh freecell; free -m 0: 1490 MB total used free shared buffers cached Mem: 2991 1501 1489 0 100 1283 -/+ buffers/cache: 117 2873 Swap: 2047 0 2047 rr019# virsh freecell; free -m 0: 1616 MB total used free shared buffers cached Mem: 3952 2337 1615 0 5 1209 -/+ buffers/cache: 1121 2831 Swap: 2047 0 2047 Is this okay with you? Or just the fix for the output removing the kB-suffix.

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[libvirt] [PATCH] Don't squash file format on volume refresh
by Cole Robinson 03 Apr '09

03 Apr '09

A while back, code was added to storage_backend.c:virStorageBackendUpdateVolTargetInfoFD to try to determine the volume format for iscsi volumes. Unfortunately this function is also called for refreshing file volumes, which has the effect of setting the format as 'raw' whenever a volume is refreshed (ex. after calling virsh vol-info). The attached patch moves the offending code into a wrapper function in the scsi driver. I haven't played with the scsi support yet so this is untested though it's largely code movement. Thanks, Cole

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[libvirt] [PATCH] Refresh storage volume on dumpxml
by Cole Robinson 03 Apr '09

03 Apr '09

The storage driver refreshes a volume's capacity+allocation data when the 'info' command is called. Seems that we should also update it when dumpxml is called, which also returns size information. Thanks, Cole

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[libvirt] [PATCH] Fix test driver 'restore' return value
by Cole Robinson 03 Apr '09

03 Apr '09

The return value for domain restore in the test driver isn't consistent with the API, and as such virsh will report failure even if the restore succeeds. The attached patch fixes this. Thanks, Cole

2 2