On Tue, Jan 8, 2013 at 11:44 AM, Denis Fondras <ceph@xxxxxxxxxxx> wrote: > Hello, > > >> What error message do you get when you try and turn it on? If the >> daemon is crashing, what is the backtrace? > > > The daemon is crashing. Here is the full log if you want to take a look : > http://vps.ledeuns.net/ceph-osd.0.log.gz > > The RBD rebuild script helped to get the data back. I will now try to > rebuild a Ceph cluster and do some more tests. > > Denis It looks like it's taking approximately forever for writes to complete to disk; it's shutting down because threads are going off to write and not coming back. If you set "osd op thread timeout = 60" (or 120) it might manage to churn through, but I'd look into why the writes are taking so long — bad disk, fragmented btrfs filesystem, or something else. -Greg -- 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