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[Alan Pevec <1430042@xxxxxxxxxxxxxxxxxx>]

** Also affects: nova/kilo
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/1430042

Title:
  Virtual Machine could not be evacuated because virtual interface
  creation failed

Status in OpenStack Compute (nova):
  Fix Released
Status in OpenStack Compute (nova) kilo series:
  New

Bug description:
  I believe this issue is related to Question 257358
  (https://answers.launchpad.net/ubuntu/+source/nova/+question/257358).

  On the source host we see the successful vif plug:

  2015-03-09 01:22:12.363 629 DEBUG neutron.plugins.ml2.rpc [req-5de70341-d64b-4a3a-bc05-54eb2802f25d None] Device 14ac5edd-269f-4808-9a34-c4cc93e9ab70 up at agent ovs-agent-ipxxxxxxxxx update_device_up /usr/lib/python2.7/site-packages/neutron/plugins/ml2/rpc.py:156
  2015-03-09 01:22:12.392 629 DEBUG oslo_concurrency.lockutils [req-5de70341-d64b-4a3a-bc05-54eb2802f25d ] Acquired semaphore "db-access" lock /usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py:377
  2015-03-09 01:22:12.436 629 DEBUG oslo_concurrency.lockutils [req-5de70341-d64b-4a3a-bc05-54eb2802f25d ] Releasing semaphore "db-access" lock /usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py:390
  2015-03-09 01:22:12.437 629 DEBUG oslo_messaging._drivers.amqp [req-5de70341-d64b-4a3a-bc05-54eb2802f25d ] UNIQUE_ID is 740634ca8c7a49418a39c429669f2f27. _add_unique_id /usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqp.py:224
  2015-03-09 01:22:12.439 629 DEBUG oslo_messaging._drivers.amqp [req-5de70341-d64b-4a3a-bc05-54eb2802f25d ] UNIQUE_ID is 3264e8d7dd7c492d9aa17d3e9892b1fc. _add_unique_id /usr/lib/python2.7/site-packages/oslo_messaging/_drivers/amqp.py:224
  2015-03-09 01:22:14.436 629 DEBUG neutron.notifiers.nova [-] Sending events: [{'status': 'completed', 'tag': u'14ac5edd-269f-4808-9a34-c4cc93e9ab70', 'name': 'network-vif-plugged', 'server_uuid': u'2790be4a-5285-46aa-8ee2-c68f5b936c1d'}] send_events /usr/lib/python2.7/site-packages/neutron/notifiers/nova.py:237

  Later, the destination host of the evacuation attempts to plug the vif
  but can't:

  2015-03-09 02:15:41.441 629 DEBUG neutron.plugins.ml2.rpc [req-5ea6625c-a60c-48fb-9264-e2a5a3ed0d26 None] Device 14ac5edd-269f-4808-9a34-c4cc93e9ab70 up at agent ovs-agent-ipxxxxxxxxxx update_device_up /usr/lib/python2.7/site-packages/neutron/plugins/ml2/rpc.py:156
  2015-03-09 02:15:41.485 629 DEBUG neutron.plugins.ml2.rpc [req-5ea6625c-a60c-48fb-9264-e2a5a3ed0d26 None] Device 14ac5edd-269f-4808-9a34-c4cc93e9ab70 not bound to the agent host ipxxxxxxxxx update_device_up /usr/lib/python2.7/site-packages/neutron/plugins/ml2/rpc.py:163

  The cause of the problem seems to be that the neutron port does not
  have is binding:host_id properly updated on evacuation, the answer to
  question 257358 looks like the fix.

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