gpfs volume driver - file permission changes cause file access error

[Bill Owen]

Recently merged changes to gpfs volume file permissions cause the backup and restore operations to fail with a permission error.

Also, the typo of file clone passed to the backup service needs to be modified to a clone copy so that TSM backup driver can create a hard link to the backup name.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/77459

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/77459
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=4ffe195c4ae6a46148e5c464e07c0a399cca05fe
Submitter: Jenkins
Branch: master

commit 4ffe195c4ae6a46148e5c464e07c0a399cca05fe
Author: Bill Owen <email address hidden>
Date: Sat Mar 1 14:36:38 2014 -0700

    gpfs volume driver backup file access fixes

    Changes to volume file permission settings require a temporary
    chown to the file being backed up.

    Also, use gpfs file clone copy mechanism to create a consistent
    file copy so that the TSM backup service can create a hard link
    to the clone file.

    Closes-bug: 1286924

    Change-Id: I951ab16788277d0052d1845fad963e9e4cdbc53e