September 2009 - Devel - libvirt List Archives

[libvirt] vnet<X>'s & interfaceStats().. KVM device numbering confusion?
by r-c＠rocketmail.com 12 Sep '09

12 Sep '09

Hi libirt-list, I am attempting to migrate from Xen->KVM and am having a little trouble understanding the new vnet<X> interface numbering scheme and how to use it to collect statistics of the interface using the interfaceStats() function. In Xen, the ID for a given domain was know, and a corresponding vif<ID>.0 interface was brought up so it was easy to grab the stats (amongst other things). Under my new KVM config I've realised that vnet<X> is brought up in a 'first free' fashion as opposed to a counter in the Xen case. This leaves me scratching my head a little bit, say I have a domain which has ended up with ID = 8, but may for instance have network 'vnet1' associated with it. I'm not sure how I can determine any association between the domain & which interface belongs to it! (e.g. a call to domain.interfaceStats() requires the correct network interface as a parameter). Surely I must be missing something here? Anyone have any advice/workaround for this situation? Ideally I would like to either be able to hardcode vnet-labels in the XML description (tried but it's ignored), or otherwise keep vnet numbering in sync with domain ID. Thanks in advance, Ravi

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[libvirt] [PATCH] Save vcpuinfo in status file
by Daniel P. Berrange 11 Sep '09

11 Sep '09

* src/qemu_driver.c: Don't trust monitor for vcpu PID info on restart * src/domain_conf.c: Save and load vCPU PID info from domain status file --- src/domain_conf.c | 35 +++++++++++++++++++++++++++++++++++ src/qemu_driver.c | 5 +---- 2 files changed, 36 insertions(+), 4 deletions(-) diff --git a/src/domain_conf.c b/src/domain_conf.c index 050cf50..5ae0775 100644 --- a/src/domain_conf.c +++ b/src/domain_conf.c @@ -3061,6 +3061,8 @@ static virDomainObjPtr virDomainObjParseXML(virConnectPtr conn, xmlNodePtr oldnode; virDomainObjPtr obj; char *monitorpath; + xmlNodePtr *nodes = NULL; + int n, i; if (!(obj = virDomainObjNew(conn))) return NULL; @@ -3133,9 +3135,32 @@ static virDomainObjPtr virDomainObjParseXML(virConnectPtr conn, break; } + n = virXPathNodeSet(conn, "./vcpus/vcpu", ctxt, &nodes); + if (n < 0) + goto error; + if (n) { + obj->nvcpupids = n; + if (VIR_REALLOC_N(obj->vcpupids, obj->nvcpupids) < 0) + goto error; + + for (i = 0 ; i < n ; i++) { + char *pidstr = virXMLPropString(nodes[i], "pid"); + if (!pidstr) + goto error; + + if (virStrToLong_i(pidstr, NULL, 10, &(obj->vcpupids[i])) < 0) { + VIR_FREE(pidstr); + goto error; + } + VIR_FREE(pidstr); + } + VIR_FREE(nodes); + } + return obj; error: + VIR_FREE(nodes); virDomainChrDefFree(obj->monitor_chr); virDomainObjFree(obj); return NULL; @@ -4422,6 +4447,16 @@ char *virDomainObjFormat(virConnectPtr conn, virBufferVSprintf(&buf, " type='%s'/>\n", virDomainChrTypeToString(obj->monitor_chr->type)); + + if (obj->nvcpupids) { + int i; + virBufferAddLit(&buf, " <vcpus>\n"); + for (i = 0 ; i < obj->nvcpupids ; i++) { + virBufferVSprintf(&buf, " <vcpu pid='%d'/>\n", obj->vcpupids[i]); + } + virBufferAddLit(&buf, " </vcpus>\n"); + } + if (!(config_xml = virDomainDefFormat(conn, obj->def, flags))) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 0e7d8d4..a65334f 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -336,10 +336,6 @@ qemuReconnectDomain(struct qemud_driver *driver, goto error; } - if (qemudDetectVcpuPIDs(NULL, obj) < 0) { - goto error; - } - if (qemuUpdateActivePciHostdevs(driver, obj->def) < 0) { goto error; } @@ -2519,6 +2515,7 @@ qemudMonitorCommandWithHandler(const virDomainObjPtr vm, qemuMonitorDiscardPendingData(vm); + VIR_DEBUG("Send '%s'", cmd); if (qemudMonitorSend(vm, cmd, scm_fd) < 0) return -1; -- 1.6.2.5

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[libvirt] Postponing 0.7.1 release by a couple of days
by Daniel Veillard 11 Sep '09

11 Sep '09

We still commited quite a bit in the last few days and I think taking a couple of extra days for testing is a bit safer, so I suggest to make the release only on Tuesday. So we have today and this week end for testing, push fixes if needed on Monday and I would make the release early on tuesday, 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] Restart libvirtd upon RPM upgrade
by Daniel P. Berrange 11 Sep '09

11 Sep '09

* libvirt.spec.in: Restart libvirtd in %post --- libvirt.spec.in | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/libvirt.spec.in b/libvirt.spec.in index 0157eee..8d4c8cc 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -471,6 +471,9 @@ fi %endif /sbin/chkconfig --add libvirtd +if [ "$1" -ge "1" ]; then + /sbin/service libvirtd condrestart > /dev/null 2>&1 +fi %endif %preun -- 1.6.2.5

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[libvirt][qemu] unable to start guest under kvm
by Anton Protopopov 11 Sep '09

11 Sep '09

Hi, all. I have the following problem: when I creating a guest, libvirt resolves <type ... machine="pc" ...> to <type ... machine="pc-0.11" ...> as provided by http://www.mail-archive.com/libvir-list@redhat.com/msg15014.html When <type ... machine="pc-0.11" ...> or <type ... machine="pc-0.10" ...> is set, I get two following errors (which would happend is unpredictable) # virsh -c qemu:///system start $d error: Failed to start domain Desktop error: internal error unable to start guest: Supported machines are: pc Standard PC (default) isapc ISA-only PC and # virsh -c qemu:///system start $d error: Failed to start domain Desktop error: monitor socket did not show up.: Connection refused When <type ... machine="pc" ...> is set, this guest starts successfully. The domain type of this machine is "kvm". But I have # qemu --version && kvm --help | head -1 QEMU PC emulator version 0.11.50, Copyright (c) 2003-2008 Fabrice Bellard QEMU PC emulator version 0.10.0 (kvm-devel), Copyright (c) 2003-2008 Fabrice Bellard on that HN. - why does libvirt sets machine to "pc-0.11" even if kvm qemu version is 0.10? - why does an error occure if I set <type ... machine="pc-0.10 ... ">

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[libvirt] Volume encryption missing pieces
by Miloslav Trmač 10 Sep '09

10 Sep '09

Major changes since the previous submission: - Use one or two separate files per secret, using XML for metadata, instead of a single file for all secrets using a custom format. - Split <secret> XML handling from the local driver into secret_conf.[ch], use it when auto-generating secrets. - Use <usage type='volume'><volume/></usage> instead of <volume>. Also available at http://fedorapeople.org/gitweb?p=mitr/public_git/libvirt.git;a=summary .

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[libvirt] [PATCH] Fix use of dlopen modules
by Daniel P. Berrange 10 Sep '09

10 Sep '09

Remove the bogus dependancy between node_device.c & storage_backend.c by moving the virWaitForDevices into util.h where it can be shared safely * src/storage_backend_disk.c, src/storage_backend_logical.c, src/storage_backend_mpath.c, src/storage_backend_scsi.c: Replace virStorageBackendWaitForDevices with virFileWaitForDevices * src/storage_backend.c, src/storage_backend.h: Remove virStorageBackendWaitForDevices, virWaitForDevices * src/util.h, src/util.c: Add virFileWaitForDevices * configure.in: Move xmlrpc check further down after pkgconfig is detected * src/Makefile.am: Add missing XMLRPC_CFLAGS/LIBS to opennebula * src/libvirt_private.syms: Add many missing exports --- configure.in | 6 +++--- src/Makefile.am | 4 ++-- src/libvirt_private.syms | 14 +++++++++++++- src/node_device.c | 4 ++-- src/storage_backend.c | 31 ------------------------------- src/storage_backend.h | 2 -- src/storage_backend_disk.c | 4 ++-- src/storage_backend_logical.c | 2 +- src/storage_backend_mpath.c | 2 +- src/storage_backend_scsi.c | 4 ++-- src/util.c | 27 +++++++++++++++++++++++++++ src/util.h | 2 ++ 12 files changed, 55 insertions(+), 47 deletions(-) diff --git a/configure.in b/configure.in index 060eb50..120f7e7 100644 --- a/configure.in +++ b/configure.in @@ -463,6 +463,9 @@ if test "$with_qemu" = "yes" -o "$with_lxc" = "yes" ; then fi +dnl Need to test if pkg-config exists +PKG_PROG_PKG_CONFIG + dnl OpenNebula driver Compilation setting dnl @@ -491,9 +494,6 @@ AC_SUBST([XMLRPC_CFLAGS]) AC_SUBST([XMLRPC_LIBS]) -dnl Need to test if pkg-config exists -PKG_PROG_PKG_CONFIG - dnl ========================================================================== dnl find libxml2 library, borrowed from xmlsec dnl ========================================================================== diff --git a/src/Makefile.am b/src/Makefile.am index 628edc5..02c1f74 100644 --- a/src/Makefile.am +++ b/src/Makefile.am @@ -396,8 +396,8 @@ noinst_LTLIBRARIES += libvirt_driver_one.la # Stateful, so linked to daemon instead #libvirt_la_LIBADD += libvirt_driver_one.la endif -libvirt_driver_one_la_CFLAGS = $(ONE_LIBS) -libvirt_driver_one_la_LDFLAGS = $(ONE_LIBS) +libvirt_driver_one_la_CFLAGS = $(XMLRPC_CFLAGS) +libvirt_driver_one_la_LDFLAGS = $(XMLRPC_LIBS) #libvirt_driver_one_la_CFLAGS = "-DWITH_ONE" if WITH_DRIVER_MODULES libvirt_driver_one_la_LDFLAGS += -module -avoid-version diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index 8dd279d..06192fc 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -10,6 +10,7 @@ virBufferAdd; virBufferAddChar; virBufferContentAndReset; virBufferError; +virBufferURIEncodeString; # caps.h @@ -167,7 +168,16 @@ virHashSize; virInterfaceDefFormat; virInterfaceDefParseFile; virInterfaceDefParseString; +virInterfaceDefParseNode; virInterfaceDefFree; +virInterfaceFindByName; +virInterfaceFindByMACString; +virInterfaceAssignDef; +virInterfaceRemove; +virInterfaceObjLock; +virInterfaceObjUnlock; +virInterfaceObjListFree; + # interface_driver.h interfaceRegister; @@ -214,6 +224,7 @@ virRegisterNetworkDriver; virRegisterStateDriver; virRegisterStorageDriver; virRegisterDeviceMonitor; +virRegisterSecretDriver; # logging.h @@ -410,6 +421,7 @@ virGetUserName; virGetUserID; virGetGroupID; virFileFindMountPoint; +virFileWaitForDevices; # uuid.h @@ -421,7 +433,7 @@ virUUIDParse; # virterror_internal.h virReportErrorHelper; virErrorMsg; -virRaiseError; +virRaiseErrorFull; virReportSystemErrorFull; virReportOOMErrorFull; virStrerror; diff --git a/src/node_device.c b/src/node_device.c index ded203f..69e15b6 100644 --- a/src/node_device.c +++ b/src/node_device.c @@ -35,7 +35,7 @@ #include "node_device_conf.h" #include "node_device_hal.h" #include "node_device.h" -#include "storage_backend.h" /* For virWaitForDevices */ +#include "util.h" #define VIR_FROM_THIS VIR_FROM_NODEDEV @@ -599,7 +599,7 @@ find_new_device(virConnectPtr conn, const char *wwnn, const char *wwpn) while ((now - start) < LINUX_NEW_DEVICE_WAIT_TIME) { - virWaitForDevices(conn); + virFileWaitForDevices(conn); dev = nodeDeviceLookupByWWN(conn, wwnn, wwpn); diff --git a/src/storage_backend.c b/src/storage_backend.c index 5e04f35..0a20255 100644 --- a/src/storage_backend.c +++ b/src/storage_backend.c @@ -630,31 +630,6 @@ virStorageBackendGetBuildVolFromFunction(virConnectPtr conn, return virStorageBackendCreateRaw; } -#if defined(UDEVADM) || defined(UDEVSETTLE) -void virWaitForDevices(virConnectPtr conn) -{ -#ifdef UDEVADM - const char *const settleprog[] = { UDEVADM, "settle", NULL }; -#else - const char *const settleprog[] = { UDEVSETTLE, NULL }; -#endif - int exitstatus; - - if (access(settleprog[0], X_OK) != 0) - return; - - /* - * NOTE: we ignore errors here; this is just to make sure that any device - * nodes that are being created finish before we try to scan them. - * If this fails for any reason, we still have the backup of polling for - * 5 seconds for device nodes. - */ - virRun(conn, settleprog, &exitstatus); -} -#else -void virWaitForDevices(virConnectPtr conn ATTRIBUTE_UNUSED) {} -#endif - virStorageBackendPtr virStorageBackendForType(int type) { @@ -893,12 +868,6 @@ virStorageBackendUpdateVolTargetFormatFD(virConnectPtr conn, } -void virStorageBackendWaitForDevices(virConnectPtr conn) -{ - virWaitForDevices(conn); - return; -} - /* * Given a volume path directly in /dev/XXX, iterate over the * entries in the directory pool->def->target.path and find the diff --git a/src/storage_backend.h b/src/storage_backend.h index eb5bf87..88c6161 100644 --- a/src/storage_backend.h +++ b/src/storage_backend.h @@ -95,7 +95,6 @@ int virStorageBackendUpdateVolTargetFormatFD(virConnectPtr conn, virStorageVolTargetPtr target, int fd); -void virStorageBackendWaitForDevices(virConnectPtr conn); char *virStorageBackendStablePath(virConnectPtr conn, virStoragePoolObjPtr pool, @@ -128,6 +127,5 @@ int virStorageBackendRunProgNul(virConnectPtr conn, virStorageBackendListVolNulFunc func, void *data); -void virWaitForDevices(virConnectPtr conn); #endif /* __VIR_STORAGE_BACKEND_H__ */ diff --git a/src/storage_backend_disk.c b/src/storage_backend_disk.c index 6fdb566..e82959c 100644 --- a/src/storage_backend_disk.c +++ b/src/storage_backend_disk.c @@ -325,7 +325,7 @@ virStorageBackendDiskRefreshPool(virConnectPtr conn, VIR_FREE(pool->def->source.devices[0].freeExtents); pool->def->source.devices[0].nfreeExtent = 0; - virStorageBackendWaitForDevices(conn); + virFileWaitForDevices(conn); if (virStorageBackendDiskReadGeometry(conn, pool) != 0) { return -1; @@ -583,7 +583,7 @@ virStorageBackendDiskCreateVol(virConnectPtr conn, return -1; /* wait for device node to show up */ - virStorageBackendWaitForDevices(conn); + virFileWaitForDevices(conn); /* Blow away free extent info, as we're about to re-populate it */ VIR_FREE(pool->def->source.devices[0].freeExtents); diff --git a/src/storage_backend_logical.c b/src/storage_backend_logical.c index 43117e8..4389120 100644 --- a/src/storage_backend_logical.c +++ b/src/storage_backend_logical.c @@ -478,7 +478,7 @@ virStorageBackendLogicalRefreshPool(virConnectPtr conn, }; int exitstatus; - virStorageBackendWaitForDevices(conn); + virFileWaitForDevices(conn); /* Get list of all logical volumes */ if (virStorageBackendLogicalFindLVs(conn, pool, NULL) < 0) { diff --git a/src/storage_backend_mpath.c b/src/storage_backend_mpath.c index ae02aac..fcc38ba 100644 --- a/src/storage_backend_mpath.c +++ b/src/storage_backend_mpath.c @@ -332,7 +332,7 @@ virStorageBackendMpathRefreshPool(virConnectPtr conn, pool->def->allocation = pool->def->capacity = pool->def->available = 0; - virStorageBackendWaitForDevices(conn); + virFileWaitForDevices(conn); virStorageBackendGetMaps(conn, pool); diff --git a/src/storage_backend_scsi.c b/src/storage_backend_scsi.c index a09103f..c70b1ed 100644 --- a/src/storage_backend_scsi.c +++ b/src/storage_backend_scsi.c @@ -494,7 +494,7 @@ virStorageBackendSCSIFindLUs(virConnectPtr conn, VIR_DEBUG(_("Discovering LUs on host %u"), scanhost); - virStorageBackendWaitForDevices(conn); + virFileWaitForDevices(conn); if (virAsprintf(&device_path, "/sys/bus/scsi/devices") < 0) { virReportOOMError(conn); @@ -542,7 +542,7 @@ virStorageBackendSCSIGetHostNumber(virConnectPtr conn, VIR_DEBUG(_("Finding host number from '%s'"), sysfs_path); - virStorageBackendWaitForDevices(conn); + virFileWaitForDevices(conn); sysdir = opendir(sysfs_path); diff --git a/src/util.c b/src/util.c index af50028..1878e33 100644 --- a/src/util.c +++ b/src/util.c @@ -2019,3 +2019,30 @@ cleanup: return ret; } #endif + +#ifndef PROXY +#if defined(UDEVADM) || defined(UDEVSETTLE) +void virFileWaitForDevices(virConnectPtr conn) +{ +#ifdef UDEVADM + const char *const settleprog[] = { UDEVADM, "settle", NULL }; +#else + const char *const settleprog[] = { UDEVSETTLE, NULL }; +#endif + int exitstatus; + + if (access(settleprog[0], X_OK) != 0) + return; + + /* + * NOTE: we ignore errors here; this is just to make sure that any device + * nodes that are being created finish before we try to scan them. + * If this fails for any reason, we still have the backup of polling for + * 5 seconds for device nodes. + */ + virRun(conn, settleprog, &exitstatus); +} +#else +void virFileWaitForDevices(virConnectPtr conn ATTRIBUTE_UNUSED) {} +#endif +#endif diff --git a/src/util.h b/src/util.h index 896e1b4..f9715ab 100644 --- a/src/util.h +++ b/src/util.h @@ -237,4 +237,6 @@ int virRandom(int max); char *virFileFindMountPoint(const char *type); #endif +void virFileWaitForDevices(virConnectPtr conn); + #endif /* __VIR_UTIL_H__ */ -- 1.6.2.5

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[libvirt] libvir: QEMU error : remoteDomainProcessEvent: unmarshalling msg
by Kenneth Nagin 10 Sep '09

10 Sep '09

I am monitoring events using the example event monitor, event-test, but remoteDomainProcessEvent is outputing an "unmarshalling msg" error when creating a VM. I've installed libvirt 0.6.5. It is configured without XEN; otherwise it is the default configuration. Any suggestions on how to overcome the problem? Kenneth Nagin

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[libvirt] [PATCH 1/5] Add esx and tcp migration uri transports to capabilities schema
by Mark McLoughlin 10 Sep '09

10 Sep '09

* docs/schemas/capabilities.rng: include esx and tcp uri_transport --- docs/schemas/capability.rng | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/docs/schemas/capability.rng b/docs/schemas/capability.rng index 1e3c5f3..dbfe1c5 100644 --- a/docs/schemas/capability.rng +++ b/docs/schemas/capability.rng @@ -79,6 +79,8 @@ <oneOrMore> <element name='uri_transport'> <choice> + <value>esx</value> + <value>tcp</value> <value>xenmigr</value> </choice> </element> -- 1.6.2.5

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[libvirt] [PATCH] Fix regression from "Avoid polling on FDs with no events"
by Chris Lalancette 10 Sep '09

10 Sep '09

After the mentioned patch was applied, I noticed that shutting down a kvm guest from inside (i.e. poweroff) caused the guest to shutdown, but not removed from the list of active guests. DanB pointed out that the problem is that the virEventAddHandle() call in the qemu driver was asking to watch for 0 events, not HANGUP | ERROR as it should. Add these events so that shutdown works again. Signed-off-by: Chris Lalancette <clalance(a)redhat.com> --- src/qemu_driver.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-) diff --git a/src/qemu_driver.c b/src/qemu_driver.c index 683fe20..996bfff 100644 --- a/src/qemu_driver.c +++ b/src/qemu_driver.c @@ -979,7 +979,8 @@ qemudOpenMonitorCommon(virConnectPtr conn, if (ret != 0) return ret; - if ((vm->monitorWatch = virEventAddHandle(vm->monitor, 0, + if ((vm->monitorWatch = virEventAddHandle(vm->monitor, + VIR_EVENT_HANDLE_HANGUP | VIR_EVENT_HANDLE_ERROR, qemudDispatchVMEvent, driver, NULL)) < 0) return -1; -- 1.6.0.6

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