glusterfs: volume-<uuid>.info is not deleted when volume is deleted

[Thang Pham]

glusterfs creates a file named volume-<uuid>.info to hold volume data, mapping cinder snapshot UUIDs and filenames. When the volume and its associated snapshots are both deleted, this file remains. The expected behavior is when a volume (and all its snapshots) is deleted, the volume-<uuid>.info should be deleted as well.

To reproduce this bug:

1. Create a volume.
Verify the files under the mount point.
# ls <glusterfs_mount_point>
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4

2. Take volume snapshot.
Verify the files under the mount point.
# ls <glusterfs_mount_point>
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4.37b7fcbf-9e60-4fef-8e82-861830f4cbce
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4.info

3. Delete the snapshot.
Verify the files under the mount point.
# ls <glusterfs_mount_point>
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4.info

4. Delete the volume.
Verify the files under the mount point.
# ls <glusterfs_mount_point>
volume-4a5648f4-7687-46bc-bc50-3dcffe2624b4.info

* Note the volume-<uuid>.info continues to exists even though the volume and its snapshots are deleted.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/84222

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/84222
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=bf006ecb4a52db6300aa0fe1abe7df621e9f6174
Submitter: Jenkins
Branch: master

commit bf006ecb4a52db6300aa0fe1abe7df621e9f6174
Author: Thang Pham <email address hidden>
Date: Mon Mar 31 15:22:47 2014 -0400

    GlusterFS: Delete volume-<uuid>.info file when volume is deleted.

    glusterfs creates a file named volume-<uuid>.info to hold volume
    data, mapping cinder snapshot UUIDs and filenames. When the
    volume and its associated snapshots are both deleted, this file
    remains. This patch deletes the volume-<uuid>.info (if one exists)
    when the volume is deleted.

    Change-Id: Iefc8bd4768b30a75c648c4689d935daeab3afe98
    Closes-Bug: #1299182

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: milestone-proposed
Review: https://review.openstack.org/85370

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/85370
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=d0262065921cb3015619bdce8ca1cae596cde9b2
Submitter: Jenkins
Branch: milestone-proposed

commit d0262065921cb3015619bdce8ca1cae596cde9b2
Author: Thang Pham <email address hidden>
Date: Mon Mar 31 15:22:47 2014 -0400

    GlusterFS: Delete volume-<uuid>.info file when volume is deleted.

    glusterfs creates a file named volume-<uuid>.info to hold volume
    data, mapping cinder snapshot UUIDs and filenames. When the
    volume and its associated snapshots are both deleted, this file
    remains. This patch deletes the volume-<uuid>.info (if one exists)
    when the volume is deleted.

    Change-Id: Iefc8bd4768b30a75c648c4689d935daeab3afe98
    Closes-Bug: #1299182
    (cherry picked from commit bf006ecb4a52db6300aa0fe1abe7df621e9f6174)