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[Bug 1431899] [NEW] TestEncryptedCinderVolumes fails with 'NoneType can't be decoded'

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Public bug reported:

http://logs.openstack.org/19/155319/13/check/check-tempest-dsvm-full-
ceph/4a14a01/logs/screen-n-cpu.txt.gz?level=TRACE#_2015-03-10_17_19_46_145

2015-03-10 17:19:46.145 ERROR oslo_messaging.rpc.dispatcher [req-72819513-908b-4210-a4c7-7f5d9ff7fd22 TestEncryptedCinderVolumes-1577051342 TestEncryptedCinderVolumes-2041152902] Exception during message handling: <type 'NoneType'> can't be decoded
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher Traceback (most recent call last):
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     executor_callback))
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     executor_callback)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 130, in _do_dispatch
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     result = func(ctxt, **new_args)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 418, in decorated_function
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/exception.py", line 88, in wrapped
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     payload)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/exception.py", line 71, in wrapped
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return f(self, context, *args, **kw)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 302, in decorated_function
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     pass
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 287, in decorated_function
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 330, in decorated_function
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     kwargs['instance'], e, sys.exc_info())
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 318, in decorated_function
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 4736, in detach_volume
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     self._detach_volume(context, instance, bdm)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 4677, in _detach_volume
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     connection_info = jsonutils.loads(bdm.connection_info)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_serialization/jsonutils.py", line 215, in loads
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return json.loads(encodeutils.safe_decode(s, encoding), **kwargs)
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/encodeutils.py", line 33, in safe_decode
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     raise TypeError("%s can't be decoded" % type(text))
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher TypeError: <type 'NoneType'> can't be decoded
2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher

** Affects: nova
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1431899

Title:
  TestEncryptedCinderVolumes fails with 'NoneType can't be decoded'

Status in OpenStack Compute (Nova):
  New

Bug description:
  http://logs.openstack.org/19/155319/13/check/check-tempest-dsvm-full-
  ceph/4a14a01/logs/screen-n-cpu.txt.gz?level=TRACE#_2015-03-10_17_19_46_145

  2015-03-10 17:19:46.145 ERROR oslo_messaging.rpc.dispatcher [req-72819513-908b-4210-a4c7-7f5d9ff7fd22 TestEncryptedCinderVolumes-1577051342 TestEncryptedCinderVolumes-2041152902] Exception during message handling: <type 'NoneType'> can't be decoded
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher Traceback (most recent call last):
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     executor_callback))
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     executor_callback)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 130, in _do_dispatch
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     result = func(ctxt, **new_args)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 418, in decorated_function
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/exception.py", line 88, in wrapped
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     payload)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/exception.py", line 71, in wrapped
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return f(self, context, *args, **kw)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 302, in decorated_function
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     pass
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 287, in decorated_function
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 330, in decorated_function
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     kwargs['instance'], e, sys.exc_info())
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 85, in __exit__
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     six.reraise(self.type_, self.value, self.tb)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 318, in decorated_function
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return function(self, context, *args, **kwargs)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 4736, in detach_volume
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     self._detach_volume(context, instance, bdm)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/opt/stack/new/nova/nova/compute/manager.py", line 4677, in _detach_volume
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     connection_info = jsonutils.loads(bdm.connection_info)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_serialization/jsonutils.py", line 215, in loads
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     return json.loads(encodeutils.safe_decode(s, encoding), **kwargs)
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/encodeutils.py", line 33, in safe_decode
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher     raise TypeError("%s can't be decoded" % type(text))
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher TypeError: <type 'NoneType'> can't be decoded
  2015-03-10 17:19:46.145 30975 TRACE oslo_messaging.rpc.dispatcher

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