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-rw-r--r--nova/compute/manager.py16
1 files changed, 12 insertions, 4 deletions
diff --git a/nova/compute/manager.py b/nova/compute/manager.py
index f138a3708..c2609a78f 100644
--- a/nova/compute/manager.py
+++ b/nova/compute/manager.py
@@ -3397,10 +3397,8 @@ class ComputeManager(manager.SchedulerDependentManager):
LOG.exception(_("error during stop() in "
"sync_power_state."),
instance=db_instance)
- elif vm_power_state in (power_state.PAUSED,
- power_state.SUSPENDED):
- LOG.warn(_("Instance is paused or suspended "
- "unexpectedly. Calling "
+ elif vm_power_state == power_state.SUSPENDED:
+ LOG.warn(_("Instance is suspended unexpectedly. Calling "
"the stop API."), instance=db_instance)
try:
self.compute_api.stop(context, db_instance)
@@ -3408,6 +3406,16 @@ class ComputeManager(manager.SchedulerDependentManager):
LOG.exception(_("error during stop() in "
"sync_power_state."),
instance=db_instance)
+ elif vm_power_state == power_state.PAUSED:
+ # Note(maoy): a VM may get into the paused state not only
+ # because the user request via API calls, but also
+ # due to (temporary) external instrumentations.
+ # Before the virt layer can reliably report the reason,
+ # we simply ignore the state discrepancy. In many cases,
+ # the VM state will go back to running after the external
+ # instrumentation is done. See bug 1097806 for details.
+ LOG.warn(_("Instance is paused unexpectedly. Ignore."),
+ instance=db_instance)
elif vm_state == vm_states.STOPPED:
if vm_power_state not in (power_state.NOSTATE,
power_state.SHUTDOWN,