[libvirt] [PATCH] libxl: rework setting the state of virDomainObj

Set the state of virDomainObj in the functions that actually change the domain state, instead of the generic libxlDomainCleanup function. This approach gives functions calling libxlDomainCleanup more flexibility wrt when and how they change virDomainObj state via virDomainObjSetState. The prior approach of calling virDomainObjSetState in libxlDomainCleanup resulted in the following incorrect coding pattern in the various functions that change domain state libxlDomain<DoStateTransition> call libxl function to do state transition emit lifecycle event libxlDomainCleanup virDomainObjSetState Once simple manifestation of this bug is seeing a domain running in virt-manager after selecting the shutdown button, even after the domain has long shutdown. Signed-off-by: Jim Fehlig <jfehlig(a)suse.com&gt; --- I considered emitting the lifecycle event in libxlDomainCleanup, but IMO it is best to change the state and emit the event where where the state change actually occurs. src/libxl/libxl_domain.c | 23 ++++++++++++----------- src/libxl/libxl_domain.h | 3 +-- src/libxl/libxl_driver.c | 28 ++++++++++++++++++---------- src/libxl/libxl_migration.c | 8 ++++++-- 4 files changed, 37 insertions(+), 25 deletions(-) diff --git a/src/libxl/libxl_domain.c b/src/libxl/libxl_domain.c index 8e8a292..224ff77 100644 --- a/src/libxl/libxl_domain.c +++ b/src/libxl/libxl_domain.c @@ -397,7 +397,6 @@ libxlDomainShutdownThread(void *opaque) libxlDriverPrivatePtr driver = shutdown_info->driver; virObjectEventPtr dom_event = NULL; libxl_shutdown_reason xl_reason = ev->u.domain_shutdown.shutdown_reason; - virDomainShutoffReason reason = VIR_DOMAIN_SHUTOFF_SHUTDOWN; libxlDriverConfigPtr cfg; cfg = libxlDriverConfigGet(driver); @@ -406,12 +405,14 @@ libxlDomainShutdownThread(void *opaque) goto cleanup; if (xl_reason == LIBXL_SHUTDOWN_REASON_POWEROFF) { + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_SHUTDOWN); + dom_event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN); switch ((virDomainLifecycleAction) vm->def->onPoweroff) { case VIR_DOMAIN_LIFECYCLE_DESTROY: - reason = VIR_DOMAIN_SHUTOFF_SHUTDOWN; goto destroy; case VIR_DOMAIN_LIFECYCLE_RESTART: case VIR_DOMAIN_LIFECYCLE_RESTART_RENAME: @@ -421,12 +422,14 @@ libxlDomainShutdownThread(void *opaque) goto endjob; } } else if (xl_reason == LIBXL_SHUTDOWN_REASON_CRASH) { + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_CRASHED); + dom_event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_CRASHED); switch ((virDomainLifecycleCrashAction) vm->def->onCrash) { case VIR_DOMAIN_LIFECYCLE_CRASH_DESTROY: - reason = VIR_DOMAIN_SHUTOFF_CRASHED; goto destroy; case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART: case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART_RENAME: @@ -442,12 +445,14 @@ libxlDomainShutdownThread(void *opaque) goto restart; } } else if (xl_reason == LIBXL_SHUTDOWN_REASON_REBOOT) { + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_SHUTDOWN); + dom_event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN); switch ((virDomainLifecycleAction) vm->def->onReboot) { case VIR_DOMAIN_LIFECYCLE_DESTROY: - reason = VIR_DOMAIN_SHUTOFF_SHUTDOWN; goto destroy; case VIR_DOMAIN_LIFECYCLE_RESTART: case VIR_DOMAIN_LIFECYCLE_RESTART_RENAME: @@ -467,7 +472,7 @@ libxlDomainShutdownThread(void *opaque) dom_event = NULL; } libxlDomainDestroyInternal(driver, vm); - libxlDomainCleanup(driver, vm, reason); + libxlDomainCleanup(driver, vm); if (!vm->persistent) virDomainObjListRemove(driver->domains, vm); @@ -479,7 +484,7 @@ libxlDomainShutdownThread(void *opaque) dom_event = NULL; } libxlDomainDestroyInternal(driver, vm); - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_SHUTDOWN); + libxlDomainCleanup(driver, vm); if (libxlDomainStart(driver, vm, false, -1) < 0) { virErrorPtr err = virGetLastError(); VIR_ERROR(_("Failed to restart VM '%s': %s"), @@ -685,8 +690,7 @@ libxlDomainDestroyInternal(libxlDriverPrivatePtr driver, */ void libxlDomainCleanup(libxlDriverPrivatePtr driver, - virDomainObjPtr vm, - virDomainShutoffReason reason) + virDomainObjPtr vm) { libxlDomainObjPrivatePtr priv = vm->privateData; libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver); @@ -709,9 +713,6 @@ libxlDomainCleanup(libxlDriverPrivatePtr driver, priv->deathW = NULL; } - if (vm->persistent) - virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, reason); - if (virAtomicIntDecAndTest(&driver->nactive) && driver->inhibitCallback) driver->inhibitCallback(false, driver->inhibitOpaque); diff --git a/src/libxl/libxl_domain.h b/src/libxl/libxl_domain.h index 8c73cc4..44b3e0b 100644 --- a/src/libxl/libxl_domain.h +++ b/src/libxl/libxl_domain.h @@ -110,8 +110,7 @@ libxlDomainDestroyInternal(libxlDriverPrivatePtr driver, void libxlDomainCleanup(libxlDriverPrivatePtr driver, - virDomainObjPtr vm, - virDomainShutoffReason reason); + virDomainObjPtr vm); /* * Note: Xen 4.3 removed the const from the event handler signature. diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index 149ef70..50861ac 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -383,7 +383,7 @@ libxlReconnectDomain(virDomainObjPtr vm, return 0; out: - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_UNKNOWN); + libxlDomainCleanup(driver, vm); if (!vm->persistent) virDomainObjListRemoveLocked(driver->domains, vm); else @@ -1266,16 +1266,19 @@ libxlDomainDestroyFlags(virDomainPtr dom, goto endjob; } + if (libxlDomainDestroyInternal(driver, vm) < 0) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("Failed to destroy domain '%d'"), vm->def->id); + goto endjob; + } + + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_DESTROYED); + event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_DESTROYED); - if (libxlDomainDestroyInternal(driver, vm) < 0) { - virReportError(VIR_ERR_INTERNAL_ERROR, - _("Failed to destroy domain '%d'"), vm->def->id); - goto endjob; - } - - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_DESTROYED); + libxlDomainCleanup(driver, vm); if (!vm->persistent) virDomainObjListRemove(driver->domains, vm); @@ -1609,6 +1612,9 @@ libxlDoDomainSave(libxlDriverPrivatePtr driver, virDomainObjPtr vm, goto cleanup; } + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_SAVED); + event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_SAVED); @@ -1618,7 +1624,7 @@ libxlDoDomainSave(libxlDriverPrivatePtr driver, virDomainObjPtr vm, goto cleanup; } - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_SAVED); + libxlDomainCleanup(driver, vm); vm->hasManagedSave = true; ret = 0; @@ -1825,7 +1831,9 @@ libxlDomainCoreDump(virDomainPtr dom, const char *to, unsigned int flags) goto unpause; } - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_CRASHED); + libxlDomainCleanup(driver, vm); + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_CRASHED); event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_CRASHED); if (!vm->persistent) diff --git a/src/libxl/libxl_migration.c b/src/libxl/libxl_migration.c index 39e4a65..aa9547b 100644 --- a/src/libxl/libxl_migration.c +++ b/src/libxl/libxl_migration.c @@ -585,7 +585,9 @@ libxlDomainMigrationFinish(virConnectPtr dconn, cleanup: if (dom == NULL) { libxlDomainDestroyInternal(driver, vm); - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED); + libxlDomainCleanup(driver, vm); + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_FAILED); event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_FAILED); if (!vm->persistent) @@ -624,7 +626,9 @@ libxlDomainMigrationConfirm(libxlDriverPrivatePtr driver, } libxlDomainDestroyInternal(driver, vm); - libxlDomainCleanup(driver, vm, VIR_DOMAIN_SHUTOFF_MIGRATED); + libxlDomainCleanup(driver, vm); + virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, + VIR_DOMAIN_SHUTOFF_MIGRATED); event = virDomainEventLifecycleNewFromObj(vm, VIR_DOMAIN_EVENT_STOPPED, VIR_DOMAIN_EVENT_STOPPED_MIGRATED); -- 2.1.4