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qemu: Start an async job for processGuestPanicEvent

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Only a small portion of processGuestPanicEvent was enclosed within a
job, let's make sure we use the job for all operations to avoid race
conditions.

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>
This commit is contained in:
Jiri Denemark 2016-01-28 18:32:02 +01:00
parent 26edd68c35
commit 1894112bb7
1 changed files with 18 additions and 41 deletions
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59
src/qemu/qemu_driver.c
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@ -3986,17 +3986,6 @@ doCoreDumpToAutoDumpPath(virQEMUDriverPtr driver,
timestr) < 0)
goto cleanup;
if (qemuDomainObjBeginAsyncJob(driver, vm,
QEMU_ASYNC_JOB_DUMP) < 0) {
goto cleanup;
}
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto endjob;
}
flags |= cfg->autoDumpBypassCache ? VIR_DUMP_BYPASS_CACHE: 0;
ret = doCoreDump(driver, vm, dumpfile,
getCompressionType(driver), flags,
@ -4004,10 +3993,6 @@ doCoreDumpToAutoDumpPath(virQEMUDriverPtr driver,
if (ret < 0)
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("Dump failed"));
endjob:
qemuDomainObjEndAsyncJob(driver, vm);
cleanup:
VIR_FREE(dumpfile);
virObjectUnref(cfg);
@ -4022,11 +4007,15 @@ processGuestPanicEvent(virQEMUDriverPtr driver,
qemuDomainObjPrivatePtr priv = vm->privateData;
virObjectEventPtr event = NULL;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
bool removeInactive = false;
if (qemuDomainObjBeginAsyncJob(driver, vm, QEMU_ASYNC_JOB_DUMP) < 0)
goto cleanup;
if (!virDomainObjIsActive(vm)) {
VIR_DEBUG("Ignoring GUEST_PANICKED event from inactive domain %s",
vm->def->name);
goto cleanup;
goto endjob;
}
virDomainObjSetState(vm,
@ -4039,6 +4028,11 @@ processGuestPanicEvent(virQEMUDriverPtr driver,
qemuDomainEventQueue(driver, event);
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0) {
VIR_WARN("Unable to save status on vm %s after state change",
vm->def->name);
}
if (virDomainLockProcessPause(driver->lockManager, vm, &priv->lockState) < 0)
VIR_WARN("Unable to release lease on %s", vm->def->name);
VIR_DEBUG("Preserving lock state '%s'", NULLSTR(priv->lockState));
@ -4046,40 +4040,23 @@ processGuestPanicEvent(virQEMUDriverPtr driver,
switch (action) {
case VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_DESTROY:
if (doCoreDumpToAutoDumpPath(driver, vm, VIR_DUMP_MEMORY_ONLY) < 0)
goto cleanup;
goto endjob;
/* fall through */
case VIR_DOMAIN_LIFECYCLE_CRASH_DESTROY:
priv->beingDestroyed = true;
if (qemuProcessKill(vm, VIR_QEMU_PROCESS_KILL_FORCE) < 0) {
priv->beingDestroyed = false;
goto cleanup;
}
priv->beingDestroyed = false;
if (!virDomainObjIsActive(vm)) {
virReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto cleanup;
}
qemuProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_CRASHED, 0);
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_CRASHED);
qemuDomainEventQueue(driver, event);
virDomainAuditStop(vm, "destroyed");
qemuDomainRemoveInactive(driver, vm);
removeInactive = true;
break;
case VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_RESTART:
if (doCoreDumpToAutoDumpPath(driver, vm, VIR_DUMP_MEMORY_ONLY) < 0)
goto cleanup;
goto endjob;
/* fall through */
case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART:
@ -4094,12 +4071,12 @@ processGuestPanicEvent(virQEMUDriverPtr driver,
break;
}
cleanup:
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0) {
VIR_WARN("Unable to save status on vm %s after state change",
vm->def->name);
}
endjob:
qemuDomainObjEndAsyncJob(driver, vm);
if (removeInactive)
qemuDomainRemoveInactive(driver, vm);
cleanup:
virObjectUnref(cfg);
}