Comment 6 for bug 1894362

Reviewed: https://review.opendev.org/752600
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=807b10f8dbd45af7ea5d11204b1a1bb2e5a2a9a3
Submitter: Zuul
Branch: stable/train

commit 807b10f8dbd45af7ea5d11204b1a1bb2e5a2a9a3
Author: linpeiwen <email address hidden>
Date: Sat Sep 5 09:42:31 2020 +0000

    [Glusterfs] Fix delete share, Couldn't find the 'gluster_used_vols'

    When we have multiple share driver backends, create a shared instance,
    and the list of'self.gluster_used_vols' will only be updated on the
    current node. If the RPC request to delete the share instance is sent
    to other nodes,'self.gluster_used_vols' will be Cannot find the
    information of the glusterfs volume we want to delete, so we need to
    update'self.gluster_used_vols' when deleting the instance

    Change-Id: I14835f6c54376737b41cbf78c94908ea1befde15
    Closes-Bug: #1894362
    (cherry picked from commit 41b0b95ef67e6c65df3125f94d2fe56b5a3630c6)
    (cherry picked from commit 18623a0eebe223c0208d70310a8d0308460bd355)