Comment 8 for bug 1311182

Reviewed: https://review.openstack.org/96340
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=3fd0a403b2688a52603accb9cc530a6b0ccad066
Submitter: Jenkins
Branch: master

commit 3fd0a403b2688a52603accb9cc530a6b0ccad066
Author: Thang Pham <email address hidden>
Date: Wed May 28 23:07:49 2014 -0400

    GlusterFS: Handle deletion of snapshot with no backing file

    If a glusterfs volume is in-use, nova is called to delete a
    volume snapshot. It is possible for a timeout to occur, since
    cinder is polling for nova task progress. In such case, a
    GlusterfsException is thrown, but nova continues to process the
    snapshot delete and commits the changes. Cinder is not aware of
    this, and the actual snapshot entry in cinder is prevented from
    being deleted, since no backing file exists for the out-of-sync
    snapshot. This patch allows a snapshot with no backing file to
    be deleted from cinder and updates the volume info file.

    Change-Id: I83c8a7242199edbfd1897297589ac7deb42c5865
    Closes-Bug: #1311182