Comment 5 for bug 1970768

Reviewed: https://review.opendev.org/c/openstack/cinder/+/831187
Committed: https://opendev.org/openstack/cinder/commit/553264535dc34f676ff4db3c77e1869c1fb3c6b7
Submitter: "Zuul (22348)"
Branch: stable/wallaby

commit 553264535dc34f676ff4db3c77e1869c1fb3c6b7
Author: Hironori Shiina <email address hidden>
Date: Fri Jan 28 21:38:03 2022 -0500

    Prevent temporary volume from being deleted accidentally

    A temporary volume can be deleted while it is in use by DELETE API
    accidentally because its status is `available`. To avoid this deletion,
    this fix sets a value which doesn't accept deletion to volume status of
    a temporary volume. When a temporary volume is used for backing up,
    `backing-up` is set. When a temporary volume is used for reverting a
    snapshot, `in-use` is set because the volume is attached by a host.

    Closes-Bug: #1970768
    Change-Id: Ib6a2e4d68e532b91161df5245c17ce815f12f935
    (cherry picked from commit 53c13891b313d58923b223f6fbb1882e991f2785)
    (cherry picked from commit d773fae8256f76ee78c81a5c07096a45227c6569)
    (cherry picked from commit cf2f3d07ae4eccb4371d031fef992d107e9c07c4)
    Conflicts:
            cinder/volume/manager.py