Comment 13 for bug 1188532

Reviewed: https://review.openstack.org/149387
Committed: https://git.openstack.org/cgit/openstack/glance/commit/?id=7d5d8657fd70b20518610b3c6f8e41e16c72fa31
Submitter: Jenkins
Branch: stable/juno

commit 7d5d8657fd70b20518610b3c6f8e41e16c72fa31
Author: Zhi Yan Liu <email address hidden>
Date: Tue Dec 30 22:25:50 2014 +0800

    Cleanup chunks for deleted image that was 'saving'

    Currently image data cannot be removed synchronously for an image that
    is in saving state. And when, the upload operation for such an image is
    completed the operator configured quota can be exceeded.

    This patch fixes the issue of left over chunks for an image which was
    deleted from saving status. However, by the limitation of the design we
    cannot enforce a global quota check for the image in saving status.

    This change introduces a inconsonance between http response codes of
    v1 and v2 APIs. The status codes which we will now see after the upload
    process completes on an image which was deleted mid way are:

    v1: 412 Precondition Failed
    v2: 410 Gone

    SecurityImpact
    UpgradeImpact
    APIImpact

    Closes-Bug: 1383973
    Closes-Bug: 1398830
    Closes-Bug: 1188532

    Conflicts:
     glance/api/v1/upload_utils.py
     glance/api/v2/image_data.py
     glance/tests/unit/test_domain_proxy.py
     glance/tests/unit/v1/test_api.py

    Change-Id: I47229b366c25367ec1bd48aec684e0880f3dfe60
    Signed-off-by: Zhi Yan Liu <email address hidden>
    (cherry picked from commit 0dc8fbb3479a53c5bba8475d14f4c7206904c5ea)