Hi, thanks for your reply. The output of 'modinfo ceph' is as follows: filename: /lib/modules/3.1.10-1.9-desktop/kernel/fs/ceph/ceph.ko license: GPL description: Ceph filesystem for Linux author: Patience Warnick <patience@xxxxxxxxxxxx> author: Yehuda Sadeh <yehuda@xxxxxxxxxxxxxxx> author: Sage Weil <sage@xxxxxxxxxxxx> srcversion: AFEFF779535E750AFD4072D depends: vermagic: 3.1.10-1.9-desktop SMP preempt mod_unload modversions And my ceph.conf file is as follows: [global] pid file = /var/run/ceph/$name.pid logger dir = /var/log/ceph log dir = /var/log/ceph user = root [mon] mon data = /var/local/data/mon$id ; debug ms = 1 ; debug mon = 20 ; debug paxos = 20 [mon.0] host = hp1 mon addr = 192.168.20.6:6789 ;[mon.1] ; host = hp2 ; mon addr = 192.168.20.7:6789 ;[mon.2] ; host = bb1 ; mon addr = 192.168.20.2:6789 [mds] ; debug ms = 1 ; message traffic ; debug mds = 1 ; mds ; debug mds balancer = 20 ; load balancing ; debug mds log = 20 ; mds journaling ; debug mds_migrator = 20 ; metadata migration ; debug monc = 20 ; monitor interaction, startup [mds.0] host = hp1 ;[mds.1] ; host = hp2 [osd] osd journal = /var/local/data/osd$id/journal osd journal size = 10000 filestore journal writeahead = true osd data = /var/local/data/osd$id ; debug ms = 1 ; message traffic ; debug osd = 20 ; debug filestore = 20 ; local object storage ; debug journal = 20 ; local journaling ; debug monc = 20 ; monitor interaction, startup [osd.0] host = el1 btrfs devs = /dev/sda3 [osd.1] host = el1 btrfs devs = /dev/sdb [osd.2] host = bb1 btrfs devs = /dev/sda3 No, I don't think so if any of them crashed. Thanks in advance and let me know if you need further info. --Udit -- 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