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[Bug 1448564] [NEW] Rescue using cells fails with: unexpected keyword argument 'expected_task_state'

 

Public bug reported:

Instance rescue gets stuck when using cells.

nova version: 2014.2.2
Using cells (parent - child setup)


How to reproduce:

nova rescue <instance_uuid> 
-> the instance "task state" stays in "rescuing".
-> nova cells log of the child shows:

2015-04-26 01:26:09.475 20672 ERROR nova.cells.messaging [req-162b3318-70c3-4290-8e09-ffb9fbcef19d None] Error processing message locally: save() got an unexpected keyword argument 'expected_task_state'
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging Traceback (most recent call last):
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/cells/messaging.py", line 199, in _process_locally
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     resp_value = self.msg_runner._process_message_locally(self)
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/cells/messaging.py", line 1293, in _process_message_locally
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return fn(message, **message.method_kwargs)
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/cells/messaging.py", line 698, in run_compute_api_method
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return fn(message.ctxt, *args, **method_info['method_kwargs'])
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 224, in wrapped
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return func(self, context, target, *args, **kwargs)
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 214, in inner
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return function(self, context, instance, *args, **kwargs)
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 195, in inner
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return f(self, context, instance, *args, **kw)
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 2750, in rescue
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     instance.save(expected_task_state=[None])
2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging TypeError: save() got an unexpected keyword argument 'expected_task_state'

** Affects: nova
     Importance: Undecided
         Status: New


** Tags: cells

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https://bugs.launchpad.net/bugs/1448564

Title:
  Rescue using cells fails with: unexpected keyword argument
  'expected_task_state'

Status in OpenStack Compute (Nova):
  New

Bug description:
  Instance rescue gets stuck when using cells.

  nova version: 2014.2.2
  Using cells (parent - child setup)

  
  How to reproduce:

  nova rescue <instance_uuid> 
  -> the instance "task state" stays in "rescuing".
  -> nova cells log of the child shows:

  2015-04-26 01:26:09.475 20672 ERROR nova.cells.messaging [req-162b3318-70c3-4290-8e09-ffb9fbcef19d None] Error processing message locally: save() got an unexpected keyword argument 'expected_task_state'
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging Traceback (most recent call last):
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/cells/messaging.py", line 199, in _process_locally
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     resp_value = self.msg_runner._process_message_locally(self)
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/cells/messaging.py", line 1293, in _process_message_locally
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return fn(message, **message.method_kwargs)
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/cells/messaging.py", line 698, in run_compute_api_method
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return fn(message.ctxt, *args, **method_info['method_kwargs'])
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 224, in wrapped
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return func(self, context, target, *args, **kwargs)
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 214, in inner
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return function(self, context, instance, *args, **kwargs)
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 195, in inner
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     return f(self, context, instance, *args, **kw)
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging   File "/usr/lib/python2.7/site-packages/nova/compute/api.py", line 2750, in rescue
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging     instance.save(expected_task_state=[None])
  2015-04-26 01:26:09.475 20672 TRACE nova.cells.messaging TypeError: save() got an unexpected keyword argument 'expected_task_state'

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