2013/7/22 Chen, Xiaoxi <xiaoxi.chen@xxxxxxxxx>: > With “journal writeahead”,the data first write to journal ,ack to the > client, and write to OSD, note that, the data always keep in memory before > it write to both OSD and journal,so the write is directly from memory to > OSDs. This mode suite for XFS and EXT4. What happens in case of journal failure during a write (to the journal, not to the OSDs) ? Is ceph smart enough to retry the write to another OSDs/Journal ? And what happens in case of server failure during a write? I'm asking this to evaluate if journals on RAM disks will be good or not. _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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