Notice the mapping of the images has failed due to a feature set mismatch!
With Ceph Jewel the new default format for RBD images is 2 and Ceph Jewel default configuration includes the following default Ceph Block Device features:
layering: layering support
exclusive-lock: exclusive locking support
object-map: object map support (requires exclusive-lock)
deep-flatten: snapshot flatten support
fast-diff: fast diff calculations (requires object-map)
Using the krbd (kernel rbd) client on client-node1 we will be unable to map the block device ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month, and much more.