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[libvirt] [PATCH 0/7] Introduce virCommandDoAsyncIO
by Michal Privoznik 27 Jan '13

27 Jan '13

Currently, if we want to use IO with asynchronous command we have to copy code from virFileWrapperFd to misuse our event loop for reading and writing to the command. However, we can extend our virCommand implementation to automatically set things up. Michal Privoznik (7): virCommand: Introduce virCommandDoAsyncIO Introduce event loop to commandtest tests: Create test for virCommandDoAsyncIO virFileWrapperFd: Switch to new virCommandDoAsyncIO qemu: Catch stderr of image decompression binary qemu: Catch stderr of image compression binary qemu: Destroy domain on decompression binary error src/libvirt_private.syms | 1 + src/qemu/qemu_driver.c | 9 +- src/qemu/qemu_migration.c | 9 +- src/util/vircommand.c | 214 ++++++++++++++++++++++++++++++++++++++++++-- src/util/vircommand.h | 1 + src/util/virfile.c | 82 +---------------- tests/commanddata/test3.log | 2 +- tests/commandtest.c | 136 ++++++++++++++++++++++++++++ 8 files changed, 365 insertions(+), 89 deletions(-) -- 1.8.0.2

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[libvirt] qemu kvm-pit device arg missing?
by Doug Goldstein 27 Jan '13

27 Jan '13

With a domain defined with the following: <clock offset='utc'> <timer name='pit' tickpolicy='delay'/> <timer name='rtc' tickpolicy='catchup'/> </clock> The following define is set: VIR_DOMAIN_TIMER_TICKPOLICY_DELAY for VIR_DOMAIN_TIMER_NAME_PIT. And VIR_DOMAIN_TIMER_TICKPOLICY_CATCHUP for VIR_DOMAIN_TIMER_NAME_RTC. I see where for the RTC we'll set -rtc,driftfix=slew (well -rtc,base=X,driftfix=slew) or -rtc-td-hack for older qemu's. But for the kvm-pit, we pass with qemu{,-kvm} 1.1 and lower -no-kvm-pit-reinjection but with qemu{,-kvm} 1.2 the QEMU_CAPS_NO_KVM_PIT is not set, nor detected via QMP so nothing is ever passed. I even looked through the QMP commands passed once the process is started and there doesn't seem to be anything passed. I was expecting with qemu{,-kvm} 1.2 and newer to see -device kvm-pit,lost_tick_policy=discard appear on the command line but didn't. Am I missing something? Or is this command line argument not necessary any longer? -- Doug Goldstein

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[libvirt] [PATCH] Make python objects inherit from 'object' base class
by Daniel P. Berrange 27 Jan '13

27 Jan '13

From: "Daniel P. Berrange" <berrange(a)redhat.com> As of python >= 2.2, it is recommended that all objects inherit from the 'object' base class. We already require python >= 2.3 for libvirt for thread macro support, so we should follow this best practice. See also http://stackoverflow.com/questions/4015417/python-class-inherits-object This is motivated the patch Rich just did for libguestfs https://www.redhat.com/archives/libguestfs/2013-January/msg00063.html Signed-off-by: Daniel P. Berrange <berrange(a)redhat.com> --- python/generator.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/python/generator.py b/python/generator.py index f853d77..a079fc5 100755 --- a/python/generator.py +++ b/python/generator.py @@ -1413,7 +1413,7 @@ def buildWrappers(module): classes.write(" %s.__init__(self, _obj=_obj)\n\n" % ( classes_ancestor[classname])) else: - classes.write("class %s:\n" % (classname)) + classes.write("class %s(object):\n" % (classname)) if classname in [ "virDomain", "virNetwork", "virInterface", "virStoragePool", "virStorageVol", "virNodeDevice", "virSecret","virStream", "virNWFilter" ]: -- 1.8.1

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[libvirt] [PATCH 0/2] Resolve Coverity issues in vbox_tmpl.c
by John Ferlan 26 Jan '13

26 Jan '13

This pair of patches resolves what amount to false positives in the vbox_tmpl.c code relating to attempts to dereference NULL in the 2002 VBOX_API_VERSION call to 'vboxIIDFromUUID()'. It also removes "false postives" from the various VBOX_UTF*_FREE() macros. Some code paths checked if the arg was valid prior to calling free. That triggered Coverity into tagging other uses of the variables where the check wasn't performed. While these changes resolve the Coverity issues there still exists a "problem" where the VBOX_UTF<n>_TO_UTF<m> macros don't check the return status from the called function nor does the code that uses the macros always check the returned arg2 for validity (125 occurrances). John Ferlan (2): vbox: Address false positive for NULL dereference vbox: Adjust the UTF FREE macros src/vbox/vbox_tmpl.c | 77 ++++++++++++++++++++++++++-------------------------- 1 file changed, 38 insertions(+), 39 deletions(-) -- 1.7.11.7

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[libvirt] [PATCH] Make sure we only abort without libcurl if $with_esx = yes
by Guido Günther 26 Jan '13

26 Jan '13

--- configure.ac | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/configure.ac b/configure.ac index 712918f..4bd3c3e 100644 --- a/configure.ac +++ b/configure.ac @@ -1810,7 +1810,7 @@ dnl check for (ESX) dnl if test "$with_curl" != "yes" ; then - if test "$with_esx" = "check"; then + if test "$with_esx" != "yes"; then with_esx=no else AC_MSG_ERROR([Curl is required for the ESX driver]) -- 1.7.10.4

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[libvirt] [PATCH] virsh: Add --print-xml flag for attach-disk command
by Peter Krempa 26 Jan '13

26 Jan '13

The flag causes the XML of the disk that would be attached to be printed instead. --- tools/virsh-domain.c | 46 ++++++++++++++++++++++++++++------------------ tools/virsh.pod | 5 ++++- 2 files changed, 32 insertions(+), 19 deletions(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index 026dac1..829e475 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -317,6 +317,12 @@ static const vshCmdOptDef opts_attach_disk[] = { .flags = 0, .help = N_("use multifunction pci under specified address") }, + {.name = "print-xml", + .type = VSH_OT_BOOL, + .flags = 0, + .help = N_("print XML document rather than attach the disk") + }, + {.name = NULL} }; @@ -480,11 +486,11 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) unsigned int flags; const char *stype = NULL; virBuffer buf = VIR_BUFFER_INITIALIZER; - char *xml; + char *xml = NULL; struct stat st; if (!(dom = vshCommandOptDomain(ctl, cmd, NULL))) - goto cleanup; + return false; if (vshCommandOptString(cmd, "source", &source) <= 0) goto cleanup; @@ -620,27 +626,31 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) xml = virBufferContentAndReset(&buf); - if (vshCommandOptBool(cmd, "config")) { - flags = VIR_DOMAIN_AFFECT_CONFIG; - if (virDomainIsActive(dom) == 1) - flags |= VIR_DOMAIN_AFFECT_LIVE; - ret = virDomainAttachDeviceFlags(dom, xml, flags); - } else { - ret = virDomainAttachDevice(dom, xml); - } - - VIR_FREE(xml); + if (!vshCommandOptBool(cmd, "print-xml")) { + if (vshCommandOptBool(cmd, "config")) { + flags = VIR_DOMAIN_AFFECT_CONFIG; + if (virDomainIsActive(dom) == 1) + flags |= VIR_DOMAIN_AFFECT_LIVE; + ret = virDomainAttachDeviceFlags(dom, xml, flags); + } else { + ret = virDomainAttachDevice(dom, xml); + } - if (ret != 0) { - vshError(ctl, "%s", _("Failed to attach disk")); + if (ret != 0) { + vshError(ctl, "%s", _("Failed to attach disk")); + goto cleanup; + } else { + vshPrint(ctl, "%s", _("Disk attached successfully\n")); + } } else { - vshPrint(ctl, "%s", _("Disk attached successfully\n")); - functionReturn = true; + vshPrint(ctl, "%s", xml); } + functionReturn = true; + cleanup: - if (dom) - virDomainFree(dom); + VIR_FREE(xml); + virDomainFree(dom); virBufferFreeAndReset(&buf); return functionReturn; } diff --git a/tools/virsh.pod b/tools/virsh.pod index e2a2aec..fd0f762 100644 --- a/tools/virsh.pod +++ b/tools/virsh.pod @@ -1787,7 +1787,7 @@ needed if the device does not use managed mode. [I<--driver driver>] [I<--subdriver subdriver>] [I<--cache cache>] [I<--type type>] [I<--mode mode>] [I<--config>] [I<--sourcetype soucetype>] [I<--serial serial>] [I<--shareable>] [I<--rawio>] [I<--address address>] -[I<--multifunction>] +[I<--multifunction>] [I<--print-xml>] Attach a new disk device to the domain. I<source> is path for the files and devices. I<target> controls the bus or @@ -1817,6 +1817,9 @@ scsi:controller.bus.unit or ide:controller.bus.unit. I<multifunction> indicates specified pci address is a multifunction pci device address. +If I<--print-xml> is specified, then the XML of the disk that would be attached +is printed instead. + =item B<attach-interface> I<domain> I<type> I<source> [I<--target target>] [I<--mac mac>] [I<--script script>] [I<--model model>] [I<--config>] [I<--inbound average,peak,burst>] [I<--outbound average,peak,burst>] -- 1.8.1.1

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[libvirt] [PATCH 0/6] libxl bug and race fixes
by Jim Fehlig 25 Jan '13

25 Jan '13

This series fixes several bugs and races in the libxl driver, as described in the commit messages of the individual patches. One of the races was discussed on the xen-devel ml [1] and resulted in two fixes in libxl [2,3]. I've tested this series with and without the libxl patches. All of the previously discovered races are fixed with this series and the libxl patches. It is possible to fire asserts in libxl with this series and without the libxl patches, but that is no worse than the current behavior. The libxl patches have not yet been committed upstream, hence the 'XXXX' for commit id in patch 1. I will respond to the xen-devel thread now with an ACK on the libxl patches (and a reference to this series) so those can be committed. I'll fixup the commit message for patch 1 later, but wanted to get this series on the list for review before the 1.0.2 freeze. [1] http://lists.xen.org/archives/html/xen-devel/2012-11/msg01016.html [2] http://lists.xen.org/archives/html/xen-devel/2012-12/msg00684.html [3] http://lists.xen.org/archives/html/xen-devel/2012-12/msg00685.html Jim Fehlig (6): libxl: Fix handling of timeouts libxl: Fix races in libxl event code libxl: Fix race between destruction of objects libxl: Explicitly remove timeouts libxl: Fix removing non-persistent domain after save libxl: Find domain object in event handler src/libxl/libxl_conf.h | 9 ++ src/libxl/libxl_driver.c | 298 ++++++++++++++++++++++++++++++++++------------- 2 files changed, 226 insertions(+), 81 deletions(-) -- 1.8.0.1

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[libvirt] [PATCH v2] python: Fix bindings for virDomainSnapshotGet{Domain, Connect}
by Jiri Denemark 25 Jan '13

25 Jan '13

https://bugzilla.redhat.com/show_bug.cgi?id=895882 virDomainSnapshot.getDomain() and virDomainSnapshot.getConnect() wrappers around virDomainSnapshotGet{Domain,Connect} were not supposed to be ever implemented. The class should contain proper domain() and connect() accessors that fetch python objects stored internally within the class. While domain() was already provided, connect() was missing. This patch adds connect() method to virDomainSnapshot class and reimplements getDomain() and getConnect() methods as aliases to domain() and connect() for backward compatibility. --- python/generator.py | 4 +++- python/libvirt-override-virDomainSnapshot.py | 8 ++++++++ src/libvirt.c | 10 ++++++++-- 3 files changed, 19 insertions(+), 3 deletions(-) diff --git a/python/generator.py b/python/generator.py index f853d77..5894616 100755 --- a/python/generator.py +++ b/python/generator.py @@ -527,6 +527,8 @@ skip_function = ( "virNWFilterGetConnect", "virStoragePoolGetConnect", "virStorageVolGetConnect", + "virDomainSnapshotGetConnect", + "virDomainSnapshotGetDomain", # only useful in C code, python code uses dict for typed parameters "virTypedParamsAddBoolean", @@ -953,7 +955,6 @@ classes_destructors = { class_skip_connect_impl = { "virConnect" : True, - "virDomainSnapshot": True, } class_domain_impl = { @@ -1436,6 +1437,7 @@ def buildWrappers(module): " self._conn = conn._conn\n") elif classname in [ "virDomainSnapshot" ]: classes.write(" self._dom = dom\n") + classes.write(" self._conn = dom.connect()\n") classes.write(" if _obj != None:self._o = _obj;return\n") classes.write(" self._o = None\n\n"); destruct=None diff --git a/python/libvirt-override-virDomainSnapshot.py b/python/libvirt-override-virDomainSnapshot.py index 3da7bfd..bf708a5 100644 --- a/python/libvirt-override-virDomainSnapshot.py +++ b/python/libvirt-override-virDomainSnapshot.py @@ -1,3 +1,11 @@ + def getConnect(self): + """Get the connection that owns the domain that a snapshot was created for""" + return self.connect() + + def getDomain(self): + """Get the domain that a snapshot was created for""" + return self.domain() + def listAllChildren(self, flags): """List all child snapshots and returns a list of snapshot objects""" ret = libvirtmod.virDomainSnapshotListAllChildren(self._o, flags) diff --git a/src/libvirt.c b/src/libvirt.c index d5d561c..fa39881 100644 --- a/src/libvirt.c +++ b/src/libvirt.c @@ -17850,7 +17850,10 @@ virDomainSnapshotGetName(virDomainSnapshotPtr snapshot) * virDomainSnapshotGetDomain: * @snapshot: a snapshot object * - * Get the domain that a snapshot was created for + * Get the domain that a snapshot was created for. + * + * WARNING: When writing libvirt bindings in other languages, do not use this + * function. Instead, store the domain and the snapshot object together. * * Returns the domain or NULL. */ @@ -17874,7 +17877,10 @@ virDomainSnapshotGetDomain(virDomainSnapshotPtr snapshot) * virDomainSnapshotGetConnect: * @snapshot: a snapshot object * - * Get the connection that owns the domain that a snapshot was created for + * Get the connection that owns the domain that a snapshot was created for. + * + * WARNING: When writing libvirt bindings in other languages, do not use this + * function. Instead, store the connection and the snapshot object together. * * Returns the connection or NULL. */ -- 1.8.1.1

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[libvirt] Entering freeze for libvirt-1.0.2
by Daniel Veillard 25 Jan '13

25 Jan '13

As scheduled and to gte a release by the end of the month next week, I have just tagged a release candidate 1 version in git and pushed associated tarballs and rpms to the usual place: ftp://libvirt.org/libvirt/ please give it a try and let's ocuse on fixing bugs untl the freeze end. I will probably make a release candidate 2 on Monday, and if everything goes well rol out the 1.0.2 release on Wednesday or Thursday. thanks ! Daniel -- Daniel Veillard | Open Source and Standards, Red Hat veillard(a)redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | virtualization library http://libvirt.org/

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[libvirt] [PATCH] conf: avoid NULL deref for pmsuspended domain state
by Eric Blake 25 Jan '13

25 Jan '13

While working with a pmsuspend vs. snapshot issue, I noticed that the state file in /var/run/libvirt/qemu/dom.xml contained a rather suspicious "(null)" string, which does not round-trip well through a libvirtd restart. Had I been on a platform other than glibc where printf("%s",NULL) crashes instead of printing (null), we might have noticed the problem much sooner. And in fixing that problem, I also noticed that we had several missing states, because we were #defining several *_LAST names to a value _different_ than what they were already given as enums in libvirt.h. Yuck. I got rid of default: labels in the case statements, because they get in the way of gcc's -Wswitch helping us ensure we cover all enum values. * src/conf/domain_conf.c (virDomainStateReasonToString) (virDomainStateReasonFromString): Fill in missing domain states; rewrite case statement to let compiler enforce checking. (VIR_DOMAIN_NOSTATE_LAST, VIR_DOMAIN_RUNNING_LAST) (VIR_DOMAIN_BLOCKED_LAST, VIR_DOMAIN_PAUSED_LAST) (VIR_DOMAIN_SHUTDOWN_LAST, VIR_DOMAIN_SHUTOFF_LAST) (VIR_DOMAIN_CRASHED_LAST): Drop dead defines. (VIR_DOMAIN_PMSUSPENDED_LAST): Drop dead define. (virDomainPMSuspendedReason): Add missing enum function. (virDomainRunningReason, virDomainPausedReason): Add missing enum value. * src/conf/domain_conf.h (virDomainPMSuspendedReason): Declare missing functions. * src/libvirt_private.syms (domain_conf.h): Export them. --- src/conf/domain_conf.c | 32 +++++++++++++++++++------------- src/conf/domain_conf.h | 1 + src/libvirt_private.syms | 6 ++++-- 3 files changed, 24 insertions(+), 15 deletions(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 7273790..5782abb 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -574,11 +574,9 @@ VIR_ENUM_IMPL(virDomainState, VIR_DOMAIN_LAST, "crashed", "pmsuspended") -#define VIR_DOMAIN_NOSTATE_LAST (VIR_DOMAIN_NOSTATE_UNKNOWN + 1) VIR_ENUM_IMPL(virDomainNostateReason, VIR_DOMAIN_NOSTATE_LAST, "unknown") -#define VIR_DOMAIN_RUNNING_LAST (VIR_DOMAIN_RUNNING_SAVE_CANCELED + 1) VIR_ENUM_IMPL(virDomainRunningReason, VIR_DOMAIN_RUNNING_LAST, "unknown", "booted", @@ -587,13 +585,12 @@ VIR_ENUM_IMPL(virDomainRunningReason, VIR_DOMAIN_RUNNING_LAST, "from snapshot", "unpaused", "migration canceled", - "save canceled") + "save canceled", + "wakeup") -#define VIR_DOMAIN_BLOCKED_LAST (VIR_DOMAIN_BLOCKED_UNKNOWN + 1) VIR_ENUM_IMPL(virDomainBlockedReason, VIR_DOMAIN_BLOCKED_LAST, "unknown") -#define VIR_DOMAIN_PAUSED_LAST (VIR_DOMAIN_PAUSED_SHUTTING_DOWN + 1) VIR_ENUM_IMPL(virDomainPausedReason, VIR_DOMAIN_PAUSED_LAST, "unknown", "user", @@ -603,14 +600,13 @@ VIR_ENUM_IMPL(virDomainPausedReason, VIR_DOMAIN_PAUSED_LAST, "ioerror", "watchdog", "from snapshot", - "shutdown") + "shutdown", + "snapshot") -#define VIR_DOMAIN_SHUTDOWN_LAST (VIR_DOMAIN_SHUTDOWN_USER + 1) VIR_ENUM_IMPL(virDomainShutdownReason, VIR_DOMAIN_SHUTDOWN_LAST, "unknown", "user") -#define VIR_DOMAIN_SHUTOFF_LAST (VIR_DOMAIN_SHUTOFF_FROM_SNAPSHOT + 1) VIR_ENUM_IMPL(virDomainShutoffReason, VIR_DOMAIN_SHUTOFF_LAST, "unknown", "shutdown", @@ -621,10 +617,12 @@ VIR_ENUM_IMPL(virDomainShutoffReason, VIR_DOMAIN_SHUTOFF_LAST, "failed", "from snapshot") -#define VIR_DOMAIN_CRASHED_LAST (VIR_DOMAIN_CRASHED_UNKNOWN + 1) VIR_ENUM_IMPL(virDomainCrashedReason, VIR_DOMAIN_CRASHED_LAST, "unknown") +VIR_ENUM_IMPL(virDomainPMSuspendedReason, VIR_DOMAIN_PMSUSPENDED_LAST, + "unknown") + VIR_ENUM_IMPL(virDomainSeclabel, VIR_DOMAIN_SECLABEL_LAST, "default", "none", @@ -15438,9 +15436,13 @@ virDomainStateReasonToString(virDomainState state, int reason) return virDomainShutoffReasonTypeToString(reason); case VIR_DOMAIN_CRASHED: return virDomainCrashedReasonTypeToString(reason); - default: - return NULL; + case VIR_DOMAIN_PMSUSPENDED: + return virDomainPMSuspendedReasonTypeToString(reason); + case VIR_DOMAIN_LAST: + break; } + VIR_WARN("Unexpected domain state: %d", state); + return NULL; } @@ -15462,9 +15464,13 @@ virDomainStateReasonFromString(virDomainState state, const char *reason) return virDomainShutoffReasonTypeFromString(reason); case VIR_DOMAIN_CRASHED: return virDomainCrashedReasonTypeFromString(reason); - default: - return -1; + case VIR_DOMAIN_PMSUSPENDED: + return virDomainPMSuspendedReasonTypeFromString(reason); + case VIR_DOMAIN_LAST: + break; } + VIR_WARN("Unexpected domain state: %d", state); + return -1; } diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index abbfe86..9a9e0b1 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -2315,6 +2315,7 @@ VIR_ENUM_DECL(virDomainPausedReason) VIR_ENUM_DECL(virDomainShutdownReason) VIR_ENUM_DECL(virDomainShutoffReason) VIR_ENUM_DECL(virDomainCrashedReason) +VIR_ENUM_DECL(virDomainPMSuspendedReason) const char *virDomainStateReasonToString(virDomainState state, int reason); int virDomainStateReasonFromString(virDomainState state, const char *reason); diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms index fc23adc..57ecc36 100644 --- a/src/libvirt_private.syms +++ b/src/libvirt_private.syms @@ -487,10 +487,12 @@ virDomainObjSetState; virDomainObjTaint; virDomainPausedReasonTypeFromString; virDomainPausedReasonTypeToString; -virDomainPciRombarModeTypeFromString; -virDomainPciRombarModeTypeToString; virDomainPMStateTypeFromString; virDomainPMStateTypeToString; +virDomainPMSuspendedReasonTypeFromString; +virDomainPMSuspendedReasonTypeToString; +virDomainPciRombarModeTypeFromString; +virDomainPciRombarModeTypeToString; virDomainRedirdevBusTypeFromString; virDomainRedirdevBusTypeToString; virDomainRemoveInactive; -- 1.8.1

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