Ceph: can't delete backup if the ceph pool doesn't exist

[wangxiyuan]

Eev:
Cinder master with Ceph backend.

Reproduce:
1. create a backup for a volume with a non-exist container:

cinder backup-create {volume_id} --container {fake_container}

the backup will be error.

2. Try to delete the error backup.

Expect:
The error backup could be deleted.

Actually:
The error backup can't be deleted.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/461082

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/461082
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=675089f86d704d4a968c614d7cf15ea873598150
Submitter: Jenkins
Branch: master

commit 675089f86d704d4a968c614d7cf15ea873598150
Author: wangxiyuan <email address hidden>
Date: Fri Apr 28 23:33:01 2017 +0800

    Ceph: Fix delete backup with non-existent pool

    If a non-existent pool is specified, Ceph will raise
    ObjectNotFound error when deleting a backup.

    Cinder should catch this error and delete the db
    record directly.

    Change-Id: I41177b9b1f63c6bd2296a5eff70f0058ce3393e5
    Closes-bug: #1686897

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/cinder 11.0.0.0b2 development milestone.