On Mon, Nov 28, 2011 at 03:37, Maxim Mikheev <mikhmv@xxxxxxxxxxxxx> wrote: > [ 2007.419285] fsck.btrfs[3727]: segfault at c9 ip 0000000000412f2d sp > 00007fffafb96738 error 4 in btrfsck[400000+1f000] > [ 2209.940609] end_request: I/O error, dev fd0, sector 0 ... > Looks likes some errors on btrfs under ceph. you can find results of fsck > /dev/sda3 as an attachment. Yup, that btrfs is pining for the fjords. And last I heard, the recovery tools aren't very good. As long as the underlying filesystem is that broken, it's hard to say what the OSD will do. You can try backup+restore of the data itself (it's just files and extended attributes), but you're probably going to have to re-mkfs it. Ceph should be able to recover the actual data, if you have the usual replicated setup. -- 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