Comment 2 for bug 877661

The above should be related, also. Here's another trace:

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ERROR: test_stop_start_with_volume (nova.tests.api.ec2.test_cloud.CloudTestCase)
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Traceback (most recent call last):
  File "/home/jenkins/workspace/nova/nova/tests/api/ec2/test_cloud.py", line 1427, in test_stop_start_with_volume
    vol = db.volume_get(admin_ctxt, vol2['id'])
  File "/home/jenkins/workspace/nova/nova/db/api.py", line 919, in volume_get
    return IMPL.volume_get(context, volume_id)
  File "/home/jenkins/workspace/nova/nova/db/sqlalchemy/api.py", line 120, in wrapper
    return f(*args, **kwargs)
  File "/home/jenkins/workspace/nova/nova/db/sqlalchemy/api.py", line 2257, in volume_get
    raise exception.VolumeNotFound(volume_id=volume_id)
VolumeNotFound: Volume 2 could not be found.