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[Alan Pevec <1450624@xxxxxxxxxxxxxxxxxx>]

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

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https://bugs.launchpad.net/bugs/1450624

Title:
  Nova waits for events from neutron on resize-revert that aren't coming

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

Bug description:
  On resize-revert, the original host was waiting for plug events from
  neutron before restarting the instance. These aren't sent since we
  don't ever unplug the vifs. Thus, we'll always fail like this:

  
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 134, in _dispatch_and_reply
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     incoming.message))
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 177, in _dispatch
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     return self._do_dispatch(endpoint, method, ctxt, args)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/oslo/messaging/rpc/dispatcher.py", line 123, in _do_dispatch
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     result = getattr(endpoint, method)(ctxt, **new_args)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/exception.py", line 88, in wrapped
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     payload)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/exception.py", line 71, in wrapped
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     return f(self, context, *args, **kw)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 298, in decorated_function
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     pass
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 284, in decorated_function
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 348, in decorated_function
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 326, in decorated_function
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     kwargs['instance'], e, sys.exc_info())
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/openstack/common/excutils.py", line 82, in __exit__
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 314, in decorated_function
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/compute/manager.py", line 3573, in finish_revert_resize
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     block_device_info, power_on)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 6095, in finish_revert_migration
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     block_device_info, power_on)
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher   File "/opt/bbc/openstack-10.0-bbc40/nova/local/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4446, in _create_domain_and_network
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher     raise exception.VirtualInterfaceCreateException()
  2015-04-30 19:45:42.602 23513 TRACE oslo.messaging.rpc.dispatcher VirtualInterfaceCreateException: Virtual Interface creation failed

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