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[libvirt] LibvirtException: socket closed unexpectedly
by Marcel Michelmann 14 May '09

14 May '09

Hi *, I wrote a program in Java communicating with libvirt/XEN over SSH, with libvirt-java-0.2.1. I poll the CPU and RAM usage quite often (about 5 times a second). My program runs well about between 5-8 minutes, but then I get LibvirtException: socket closed unexpectedly. Although I try to catch the LibvirtExceptions with special System.out.println messages I have no idea where this is coming from. Now my question: what leads to this exception? exception caught: org.libvirt.LibvirtException: socket closed unexpectedly level:VIR_ERR_ERROR code:VIR_ERR_RPC domain:VIR_FROM_REMOTE hasConn:false hasDom:false hasNet:false message:socket closed unexpectedly str1:%s str2:socket closed unexpectedly str3:null int1:0 int2:0 After that I can start my program again, and it is the same again (runs some minutes and then throws the exception). Perhaps someone knows? I would be very thankful for any help! Best regards, Marcel

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[libvirt] Latest git tree doesn't compile
by Florian Vichot 13 May '09

13 May '09

Hello everyone, I just got the latest and grooviest libvirt from the git tree at : git://git.et.redhat.com/libvirt.git but compiling fails: /bin/bash ../mylibtool --tag=CC --mode=compile gcc -DHAVE_CONFIG_H -I. -I.. -I../gnulib/lib -I../gnulib/lib -I../include -I../include -I../qemud -I/usr/include/libxml2 -DLIBDIR=\""/usr/local/lib"\" -DBINDIR=\""/usr/local/libexec"\" -DSBINDIR=\""/usr/local/sbin"\" -DSYSCONF_DIR="\"/usr/local/etc\"" -DLOCALEBASEDIR=\""/usr/local/share/locale"\" -DLOCAL_STATE_DIR=\""/usr/local/var"\" -DGETTEXT_PACKAGE=\"libvirt\" -Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables -g -O2 -MT lxc_driver.lo -MD -MP -MF .deps/lxc_driver.Tpo -c -o lxc_driver.lo lxc_driver.c (CC) -o lxc_driver.lo lxc_driver.c lxc_container.c: In function 'lxcContainerDropCapabilities': lxc_container.c:657: error: 'PR_CAPBSET_DROP' undeclared (first use in this function) lxc_container.c:657: error: (Each undeclared identifier is reported only once lxc_container.c:657: error: for each function it appears in.) Apparently, my machine doesn't have the PR_CAPBSET_DROP flag defined. It's inexistent in sys/capability.h and "man prctl". I run a Ubuntu 8.04, kernel is 2.6.24-24-openvz. Am I missing headers that are not tested for in the ./configure ? If not, any way that functionality could be disabled on distros that don't support it ? Thanks, Florian

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[libvirt] [PATCH] avoid XML attributes escaping problems
by Daniel Veillard 13 May '09

13 May '09

The associated patch solves https://bugzilla.redhat.com/show_bug.cgi?id=499791 where ' or " character in attribute values may lead to non well-formed XML. This takes the simplest approach to always escape then to ' and " since this is completely equivalent from an XML point of view and avoid the trouble. 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] create domain for existing xp image
by Gunnar Thielebein 13 May '09

13 May '09

I want to create a domain for an existing xp machine via virt-install. The command is taken from this wiki article http://wiki.libvirt.org/page/QEMUSwitchToLibvirt: > virt-install --accelerate --hvm --connect qemu:///system -n xp -r 512 > --cdrom=/dev/null --file=WinXP.img --vnc --noautoconsole --os-type > windows --os-variant winxp --force When I start and connect I see message: > We apologize for the inconvenience, > ... > A recent hardware or software change might have caused this. When I look at the features I saw that it lacks acpi so it changes image HAL table. Is it intentional missing for that os/variant?

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[libvirt] [PATCH 0/5] Interface Config public APIs and remote stubs
by Laine Stump 13 May '09

13 May '09

These 5 patches contain the public virInterface*() API definition, the local plumbing, and the RPC glue. The test driver and real driver are still TBI, but having this in will allow other people to work on related stuff. Other things still needed: python/java bindings cli commands in virsh I'm sure lots of other things I don't know about yet. Note that I have added a couple things to the API that I previously didn't realize were needed (virInterfaceRef and virInterfaceFree - I had figured the client side would just pass around a cookie, not actually have storage associated with it).

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[libvirt] PATCH: Fix virsh reporting open errors
by Daniel P. Berrange 13 May '09

13 May '09

The error handling refactor we did in virsh a few months back, accidentally means we never report the real libvirt error message for the initial connection attempt. This patch fixes it Daniel Index: src/virsh.c =================================================================== RCS file: /data/cvs/libvirt/src/virsh.c,v retrieving revision 1.202 diff -u -p -r1.202 virsh.c --- src/virsh.c 28 Apr 2009 10:55:45 -0000 1.202 +++ src/virsh.c 8 May 2009 16:36:30 -0000 @@ -6876,6 +6876,7 @@ vshInit(vshControl *ctl) * such as "help". */ if (!ctl->conn) { + virshReportError(ctl); vshError(ctl, FALSE, "%s", _("failed to connect to the hypervisor")); return FALSE; } -- |: 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] qemu error: package not installed
by Nigel Goddard 13 May '09

13 May '09

I get the following error on Ubuntu 8.04 when tryint to install the libvirt-bin package: Setting up libvirt-bin (0.4.0-2ubuntu8.1) ... * Starting libvirt management daemon libvirtd libvir: QEMU error : cannot create bridge 'vnet%d' : Package not installed Failed to autostart network 'default': cannot create bridge 'vnet%d' : Package not installed Can anyone advise which package I need to install? thanks Nigel -- ============================================ Nigel Goddard Axiope Limited ngoddard(a)axiope.com Tel: +44 787 967 1811 http://www.axiope.com Fax: +44 871 251 4870 -------------------------------------------- Registered in Scotland. Registered address: Quartermile One, 15 Lauriston Place Edinburgh EH3 9EP, United Kingdom ============================================

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[libvirt] [PATCH 0/7] virStorageVolCreateXMLFrom API
by Cole Robinson 12 May '09

12 May '09

Hi all, The following patches implement a new API call: virStorageVolCreateXMLFrom. virStorageVolPtr virStorageVolCreateXMLFrom(virStoragePoolPtr pool, const char *xmldesc, unsigned int flags, virStorageVolPtr clonevol) Arguments function similar to the regular volume create API, except the parameter 'clonevol' is used as the input source. The API allows for volume cloning, possibly across pools, or within the same pool but converting volume formats. Tests I performed (and ensured that a VM booted without complaints from the new image): Raw -> Raw (with successful sparse detection) Raw -> QCOW2 QCOW2 -> Raw QCOW2 -> QCOW2 QCOW2 -> VMDK Raw partition ('disk' volume) -> Raw file Thanks, Cole Cole Robinson (7): Add public API stubs for virStorageVolCreateXMLFrom Remote driver plumbing for virStorageVolCreateXMLFrom Test driver implementation of virStorageVolCreateXMLFrom Virsh commands vol-clone and vol-create-from Storage driver implementation for CreateXMLFrom Break out FS volume build routines to their own functions. VolumeCreateXMLFrom FS storage backend implementation. include/libvirt/libvirt.h | 4 + include/libvirt/libvirt.h.in | 4 + qemud/remote.c | 34 +++ qemud/remote_dispatch_args.h | 1 + qemud/remote_dispatch_prototypes.h | 7 + qemud/remote_dispatch_ret.h | 1 + qemud/remote_dispatch_table.h | 5 + qemud/remote_protocol.c | 24 ++ qemud/remote_protocol.h | 18 ++ qemud/remote_protocol.x | 15 +- src/driver.h | 6 + src/libvirt.c | 61 +++++- src/libvirt_public.syms | 5 + src/remote_internal.c | 33 +++ src/storage_backend.h | 2 + src/storage_backend_fs.c | 491 +++++++++++++++++++++++++----------- src/storage_driver.c | 153 +++++++++++- src/test.c | 95 +++++++ src/virsh.c | 177 +++++++++++++- 19 files changed, 985 insertions(+), 151 deletions(-)

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[libvirt] [PATCH] Fix error squashing when refreshing file volumes
by Cole Robinson 12 May '09

12 May '09

When refreshing a file based pool, errors hit when determining a volume's format were being squashed, reporting OOM instead. The attached patch fixes the error reporting here. Reported by Jason Guiditta. Thanks, Cole

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[libvirt] PATCH: Another attempt to fix vbox driver open
by Daniel P. Berrange 12 May '09

12 May '09

The patches we just applied for the VirtualBox open method still were not quite right. It would return VIR_DRV_OPEN_DECLINED when uri==NULL, but before doing so it would have set conn->uri to vbox:///session. So even though it declined the connection, all the later drivers would now ignore it. Also, it now returns DECLINED for some real errors that should be reported to the user. Here's an alternative idea I've had for trying to address this. Some goals: - If the user gives a URI with a vbox:/// prefix, we should always handle it, unless a 'server' is set when we leave it to the remote driver - If an invalid path is given we must give back a real error code - If after deciding the URI is for us, any initialization fails we must raise an error. - If the vbox glue layer is missing, we should still raise errors for requested URIs, so user knows their URI is correct. To do this, I've taken the approach of registering a dummy vbox driver if the glue layer is missing. This just parses the URI and always returns an error for any vbox:// URIs that would otherwise work Daniel Index: src/vbox/vbox_driver.c =================================================================== RCS file: /data/cvs/libvirt/src/vbox/vbox_driver.c,v retrieving revision 1.2 diff -u -p -r1.2 vbox_driver.c --- src/vbox/vbox_driver.c 6 May 2009 13:51:19 -0000 1.2 +++ src/vbox/vbox_driver.c 8 May 2009 16:35:57 -0000 @@ -34,6 +34,7 @@ #include "logging.h" #include "vbox_driver.h" #include "vbox_XPCOMCGlue.h" +#include "virterror_internal.h" #define VIR_FROM_THIS VIR_FROM_VBOX @@ -43,15 +44,25 @@ extern virDriver vbox22Driver; extern virDriver vbox25Driver; #endif +static virDriver vboxDriverDummy; + +#define VIR_FROM_THIS VIR_FROM_VBOX + +#define vboxError(conn, code, fmt...) \ + virReportErrorHelper(conn, VIR_FROM_VBOX, code, __FILE__, \ + __FUNCTION__, __LINE__, fmt) int vboxRegister(void) { virDriverPtr driver; uint32_t uVersion; - /* vboxRegister() shouldn't fail as that will render libvirt unless. - * So, we use the v2.2 driver as a fallback/dummy. + /* + * If the glue layer won' initialize, we register a driver + * with a dummy open method, so we can report nicer errors + * if the user requests a vbox:// URI which we know won't + * ever work */ - driver = &vbox22Driver; + driver = &vboxDriverDummy; /* Init the glue and get the API version. */ if (VBoxCGlueInit() == 0) { @@ -79,7 +90,7 @@ int vboxRegister(void) { } } else { - DEBUG0("VBoxCGlueInit failed"); + DEBUG0("VBoxCGlueInit failed, using dummy driver"); } if (virRegisterDriver(driver) < 0) @@ -87,3 +98,46 @@ int vboxRegister(void) { return 0; } + +static virDrvOpenStatus vboxOpenDummy(virConnectPtr conn, + virConnectAuthPtr auth ATTRIBUTE_UNUSED, + int flags ATTRIBUTE_UNUSED) { + uid_t uid = getuid(); + + if (conn->uri == NULL || + conn->uri->scheme == NULL || + STRNEQ (conn->uri->scheme, "vbox") || + conn->uri->server != NULL) + return VIR_DRV_OPEN_DECLINED; + + if (conn->uri->path == NULL || STREQ(conn->uri->path, "")) { + vboxError(conn, VIR_ERR_INTERNAL_ERROR, "%s", + _("no VirtualBox drviver path specified (try vbox:///session)")); + return VIR_DRV_OPEN_ERROR; + } + + if (uid != 0) { + if (STRNEQ (conn->uri->path, "/session")) { + vboxError(conn, VIR_ERR_INTERNAL_ERROR, + _("unknown driver path '%s' specified (try vbox:///session)"), conn->uri->path); + return VIR_DRV_OPEN_ERROR; + } + } else { /* root */ + if (STRNEQ (conn->uri->path, "/system") && + STRNEQ (conn->uri->path, "/session")) { + vboxError(conn, VIR_ERR_INTERNAL_ERROR, + _("unknown driver path '%s' specified (try vbox:///system)"), conn->uri->path); + return VIR_DRV_OPEN_ERROR; + } + } + + vboxError(conn, VIR_ERR_INTERNAL_ERROR, "%s", + _("unable to initialize VirtualBox driver API")); + return VIR_DRV_OPEN_ERROR; +} + +static virDriver vboxDriverDummy = { + VIR_DRV_VBOX, + "VBOX", + .open = vboxOpenDummy, +}; Index: src/vbox/vbox_tmpl.c =================================================================== RCS file: /data/cvs/libvirt/src/vbox/vbox_tmpl.c,v retrieving revision 1.5 diff -u -p -r1.5 vbox_tmpl.c --- src/vbox/vbox_tmpl.c 8 May 2009 10:18:26 -0000 1.5 +++ src/vbox/vbox_tmpl.c 8 May 2009 16:35:57 -0000 @@ -216,16 +216,6 @@ no_memory: } static int vboxInitialize(virConnectPtr conn, vboxGlobalData *data) { - - if (VBoxCGlueInit() != 0) { - vboxError(conn, VIR_ERR_INTERNAL_ERROR, "Can't Initialize VirtualBox, VBoxCGlueInit failed."); - goto cleanup; - } - - /* This is for when glue init failed and we're serving as dummy driver. */ - if (g_pfnGetFunctions == NULL) - goto cleanup; - /* Get the API table for out version, g_pVBoxFuncs is for the oldest version of the API that we support so we cannot use that. */ data->pFuncs = g_pfnGetFunctions(VBOX_XPCOMC_VERSION); @@ -291,13 +281,13 @@ static int vboxExtractVersion(virConnect } static void vboxUninitialize(vboxGlobalData *data) { + if (!data) + return; + if (data->pFuncs) data->pFuncs->pfnComUninitialize(); VBoxCGlueTerm(); - if (!data) - return; - virDomainObjListFree(&data->domains); virCapabilitiesFree(data->caps); VIR_FREE(data); @@ -306,52 +296,62 @@ static void vboxUninitialize(vboxGlobalD static virDrvOpenStatus vboxOpen(virConnectPtr conn, virConnectAuthPtr auth ATTRIBUTE_UNUSED, int flags ATTRIBUTE_UNUSED) { - vboxGlobalData *data; + vboxGlobalData *data = NULL; uid_t uid = getuid(); if (conn->uri == NULL) { conn->uri = xmlParseURI(uid ? "vbox:///session" : "vbox:///system"); if (conn->uri == NULL) { + virReportOOMError(conn); return VIR_DRV_OPEN_ERROR; } - } else if (conn->uri->scheme == NULL || - conn->uri->path == NULL ) { - return VIR_DRV_OPEN_DECLINED; } - if (STRNEQ (conn->uri->scheme, "vbox")) + if (conn->uri->scheme == NULL || + STRNEQ (conn->uri->scheme, "vbox")) + return VIR_DRV_OPEN_DECLINED; + + /* Leave for remote driver */ + if (conn->uri->server != NULL) return VIR_DRV_OPEN_DECLINED; + if (conn->uri->path == NULL || STREQ(conn->uri->path, "")) { + vboxError(conn, VIR_ERR_INTERNAL_ERROR, "%s", + _("no VirtualBox drviver path specified (try vbox:///session)")); + return VIR_DRV_OPEN_ERROR; + } + if (uid != 0) { - if (STRNEQ (conn->uri->path, "/session")) - return VIR_DRV_OPEN_DECLINED; + if (STRNEQ (conn->uri->path, "/session")) { + vboxError(conn, VIR_ERR_INTERNAL_ERROR, + _("unknown driver path '%s' specified (try vbox:///session)"), conn->uri->path); + return VIR_DRV_OPEN_ERROR; + } } else { /* root */ if (STRNEQ (conn->uri->path, "/system") && - STRNEQ (conn->uri->path, "/session")) - return VIR_DRV_OPEN_DECLINED; + STRNEQ (conn->uri->path, "/session")) { + vboxError(conn, VIR_ERR_INTERNAL_ERROR, + _("unknown driver path '%s' specified (try vbox:///system)"), conn->uri->path); + return VIR_DRV_OPEN_ERROR; + } } if (VIR_ALLOC(data) < 0) { virReportOOMError(conn); - goto cleanup; + return VIR_DRV_OPEN_ERROR; } - if (!(data->caps = vboxCapsInit())) - goto cleanup; - - if (vboxInitialize(conn, data) < 0) - goto cleanup; - - if (vboxExtractVersion(conn, data) < 0) - goto cleanup; + if (!(data->caps = vboxCapsInit()) || + vboxInitialize(conn, data) < 0 || + vboxExtractVersion(conn, data) < 0) { + vboxUninitialize(data); + return VIR_DRV_OPEN_ERROR; + } conn->privateData = data; DEBUG0("in vboxOpen"); return VIR_DRV_OPEN_SUCCESS; -cleanup: - vboxUninitialize(data); - return VIR_DRV_OPEN_DECLINED; } static int vboxClose(virConnectPtr conn) { -- |: 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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