Comment 4 for bug 1288574

Reviewed: https://review.openstack.org/102469
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=7ca83e81a5afd76cb8bf5333c09f3441c3293ee0
Submitter: Jenkins
Branch: stable/icehouse

commit 7ca83e81a5afd76cb8bf5333c09f3441c3293ee0
Author: jichenjc <email address hidden>
Date: Fri Feb 28 20:31:39 2014 +0800

    Delete image when backup operation failed on snapshot step

    when we snapshot an instance, we will use @delete_image_on_error to
    delete any failed snapshot, however, the image will not be removed
    by backup code flow, it will be an issue if too many backup failed
    at last ,all useful image will be removed and we have only 'error'
    image left in host

    Change-Id: Ib527ade86aef52a8445b57fa03fed434578c4204
    Closes-Bug: #1288574
    (cherry picked from commit 3824051b1e5618388a17c88867a3037397bc96b7)