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[jichenjc <jichenjc@xxxxxxxxxx>]

Public bug reported:

when I resize an instance , it might fail due to resize down (we don't
support it now)

2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 296, in decorated_function
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 3464, in resize_instance
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     self.instance_events.clear_events_for_instance(instance)
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/contextlib.py", line 35, in __exit__
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     self.gen.throw(type, value, traceback)
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 5556, in _error_out_instance_on_exception
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     raise error.inner_exception
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher ResizeError: Resize error: Unable to resize disk down.
2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher


however, the migration is kept in the system without updating its status, so 
we will keep seeing this warning:

2014-05-28 16:12:35.031 4259 WARNING nova.compute.resource_tracker [-]
[instance: 8138f726-de38-498c-b3fa-e3d2c416ebb9] Instance not resizing,
skipping migration.

** Affects: nova
     Importance: Undecided
     Assignee: jichenjc (jichenjc)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => jichenjc (jichenjc)

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https://bugs.launchpad.net/bugs/1324003

Title:
  resize failed should update migration status

Status in OpenStack Compute (Nova):
  New

Bug description:
  when I resize an instance , it might fail due to resize down (we don't
  support it now)

  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/openstack/common/excutils.py", line 68, in __exit__
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 296, in decorated_function
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 3464, in resize_instance
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     self.instance_events.clear_events_for_instance(instance)
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/contextlib.py", line 35, in __exit__
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     self.gen.throw(type, value, traceback)
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 5556, in _error_out_instance_on_exception
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher     raise error.inner_exception
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher ResizeError: Resize error: Unable to resize disk down.
  2014-05-28 15:29:12.508 4259 TRACE oslo.messaging.rpc.dispatcher

  
  however, the migration is kept in the system without updating its status, so 
  we will keep seeing this warning:

  2014-05-28 16:12:35.031 4259 WARNING nova.compute.resource_tracker [-]
  [instance: 8138f726-de38-498c-b3fa-e3d2c416ebb9] Instance not
  resizing, skipping migration.

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