This will allow customers to copy RBD images for disaster recovery. http://tracker.ceph.com/issues/4454
LP Blueprint: https://blueprints.launchpad.net/cinder/+spec/generic-volume-migration
Unfortunately this patch wasn't merged in time for the code freeze deadline in Cinder. Targeted to Liberty-1 milestone. Sean
*** This bug has been marked as a duplicate of bug 1122356 ***