hi,all i take a glance at ceph code of cls_rbd.cc. it seems that snap and clone both do not R/W any data, they just add some keys and values, even rbds in different pools. am i missing something? or could you explain deeper about the implemention of snap and clone. thanks very much. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140716/6197eaac/attachment.htm>