<commit_before>=============================================
OpenStack database hacks to resolve gridlocks
=============================================

Sometimes the OpenStack services are in disagreement with the real
world, and often those situations cannot be resolved with the available
command line tools, prompting manual intervention in the databases
directly.


Non-existant volume attached to instance
----------------------------------------

In some cases a volume attachment is created with a volume in state 'reserved'.
This attachment, however, is not actually made, so it won't show up in
cinder attachment-list. It will, however, become an entry in the nova database
block_device_mapping table. As the volume is not referenced by cinder as 
attached, the volume may be deleted by the user, which will happen because of<commit_msg>fix typo<commit_after>=============================================
OpenStack database hacks to resolve gridlocks
=============================================

Sometimes the OpenStack services are in disagreement with the real
world, and often those situations cannot be resolved with the available
command line tools, prompting manual intervention in the databases
directly.


Non-existent volume attached to instance
----------------------------------------

In some cases a volume attachment is created with a volume in state 'reserved'.
This attachment, however, is not actually made, so it won't show up in
cinder attachment-list. It will, however, become an entry in the nova database
block_device_mapping table. As the volume is not referenced by cinder as 
attached, the volume may be deleted by the user, which will happen because of
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