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Bug #16230

Updated by Jason Dillaman about 4 years ago

If the image watch is lost, the exclusive lock will be released and reacquired for safety reasons. Therefore, it's possible for a race to occur if the journal is closed in the background while rbd-mirror is accessing it w/o holding the necessary locks.

One Once specific example is in 'ImageReplayer::shut_down' where 'librbd::Journal::stop_external_replay' is invoked without holding the owner lock.

http://teuthology.ovh.sepia.ceph.com/teuthology/jdillaman-2016-06-10_03:05:15-rbd-master---basic-openstack/21667/teuthology.log

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