hi,all By reading the code , i notice everything of a OP is encoded into Transaction which is writed into journal later. does journal record everything(meta,xattr,file data...) of a OP. if so everything is writed into disk twice, and journal always reaches full state, right? thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.ceph.com/pipermail/ceph-users-ceph.com/attachments/20140815/c2976d6e/attachment.htm>