ceph/ceph — pull request #2881 by dillaman (2014-11-07 15:48:00+00:00)
Title: librbd: don't close an already closed parent image upon failure

If librbd is not able to open a child's parent image, it will
incorrectly close the parent image twice, resulting in a crash.

Fixes: #10030
Backport: firefly, giant
Signed-off-by: Jason Dillaman