** Also affects: nova/juno
Importance: Undecided
Status: New
** Changed in: nova/juno
Status: New => Fix Committed
** Changed in: nova/juno
Milestone: None => 2014.2.3
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https://bugs.launchpad.net/bugs/1367186
Title:
Instances stuck with task_state of unshelving after RPC call timeout.
Status in OpenStack Compute (Nova):
Fix Released
Status in OpenStack Compute (nova) juno series:
Fix Committed
Bug description:
Instances stuck with task_state of unshelving after RPC call between
nova-conductor and nova-scheduler fails(because of, for example,
timeout) in the operation of unshelve.
The environment:
Ubuntu 14.04 LTS(64bit)
stable/icehouse(2014.1.2)
(I could also reproduce it with
master(commit:a1fa42f2ad11258f8b9482353e078adcf73ee9c2).)
How to reproduce:
1. create a VM instance
2. shelve the VM instance
3. stop nova-scheduler process
4. unshelve the VM instance
(The nova-conductor calls the nova-scheduler, but the RPC call times out.)
Then the VM instance stucks with task_state of unshelving(See the following).
The VM instance still remains stuck even after nova-scheduler process starts
again.
stack@devstack-icehouse:/opt/devstack$ nova list
+--------------------------------------+---------+-------------------+------------+-------------+-------------------+
| ID | Name | Status | Task
State | Power State | Networks |
+--------------------------------------+---------+-------------------+------------+-------------+-------------------+
| 12e488e8-1df1-479d-866e-51c3117e384b | server1 | SHELVED_OFFLOADED |
unshelving | Shutdown | public=10.0.2.194 |
+--------------------------------------+---------+-------------------+------------+-------------+-------------------+
nova-conductor.log:
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2014-09-09 18:18:13.263 13087 ERROR oslo.messaging.rpc.dispatcher [-]
Exception during message handling: Timed out waiting for a reply to message ID
934be80a9798443597f355d60fa08e56
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher Traceback
(most recent call last):
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line
134, in _dispatch_and_reply
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
incoming.message))
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line
177, in _dispatch
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher return
self._do_dispatch(endpoint, method, ctxt, args)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line
123, in _do_dispatch
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher result
= getattr(endpoint, method)(ctxt, **new_args)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/opt/stack/nova/nova/conductor/manager.py", line 849, in unshelve_instance
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
instance)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/opt/stack/nova/nova/conductor/manager.py", line 816, in _schedule_instances
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
request_spec, filter_properties)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/opt/stack/nova/nova/scheduler/rpcapi.py", line 103, in select_destinations
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
request_spec=request_spec, filter_properties=filter_properties)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/client.py", line
152, in call
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
retry=self.retry)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/transport.py", line 90,
in _send
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
timeout=timeout, retry=retry)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 404, in send
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
retry=retry)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 393, in _send
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher result
= self._waiter.wait(msg_id, timeout)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 281, in wait
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher reply,
ending = self._poll_connection(msg_id, timeout)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 231, in _poll_connection
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher %
msg_id)
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
MessagingTimeout: Timed out waiting for a reply to message ID
934be80a9798443597f355d60fa08e56
2014-09-09 18:18:13.263 13087 TRACE oslo.messaging.rpc.dispatcher
2014-09-09 18:18:13.274 13087 ERROR oslo.messaging._drivers.common [-]
Returning exception Timed out waiting for a reply to message ID
934be80a9798443597f355d60fa08e56 to caller
2014-09-09 18:18:13.275 13087 ERROR oslo.messaging._drivers.common [-]
['Traceback (most recent call last):\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line
134, in _dispatch_and_reply\n incoming.message))\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line
177, in _dispatch\n return self._do_dispatch(endpoint, method, ctxt,
args)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line
123, in _do_dispatch\n result = getattr(endpoint, method)(ctxt,
**new_args)\n', ' File "/opt/stack/nova/nova/conductor/manager.py", line 849,
in unshelve_instance\n instance)\n', ' File
"/opt/stack/nova/nova/conductor/manager.py", line 816, in _schedule_instances\n
request_spec, filter_properties)\n', ' File
"/opt/stack/nova/nova/scheduler/rpcapi.py", line 103, in select_destinations\n
request_spec=request_spec, filter_properties=filter_properties)\n', ' File "/
usr/local/lib/python2.7/dist-packages/oslo/messaging/rpc/client.py", line 152,
in call\n retry=self.retry)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/transport.py", line 90,
in _send\n timeout=timeout, retry=retry)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 404, in send\n retry=retry)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 393, in _send\n result = self._waiter.wait(msg_id, timeout)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 281, in wait\n reply, ending = self._poll_connection(msg_id,
timeout)\n', ' File
"/usr/local/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py",
line 231, in _poll_connection\n % msg_id)\n', 'MessagingTimeout: Timed out
waiting for a reply to message ID 934be80a9798443597f355d60fa08e56\n']
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
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