On 04/07/2013 01:31 PM, Andrey Korolyov wrote:
Hello, Is there an existing or planned way to save an image from such thing, except protected snapshot? Since ``rbd snap protect'' is good enough for a small or inactive images, large ones may add significant overhead by space or by I/O when 'locking' snapshot is present, so it would be nice to see same functionality by the flag of ``rbd lock'' command.
When we added locking originally, we thought about adding a general --lock flag for rbd commands on a particular image that would acquire an exclusive lock on the image before doing anything. Then you could do 'rbd rm --lock', and it would fail if you'd left the imaged locked. This is easy to implement, but we haven't gotten around to it. It's in the tracker though: http://tracker.ceph.com/issues/2586 On a related note, Wido is adding an option to prevent accidental data loss via resize: https://github.com/ceph/ceph/pull/209 Josh -- To unsubscribe from this list: send the line "unsubscribe ceph-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
