I'm using ceph-0.51. I setup 3 monitors. then mount with 3 mon IP at another host with either kernel mode or fuse, neither give me redundancy. Here's commands I used at client (IP: 10.0.0.2) side; mount -t ceph log3,log21,squid86-log12:/ /mnt/bc ceph-fuse -m log3,log21,squid86-log12 /mnt/bc When mounted, read/write is OK, then add a iptables rule at log3 to REJECT/DROP packets from client 10.0.0.2, operation at client stuck due to IO problem. Related stuck processes on client look like this: log1 ~ # ps auwx |g bc root 1325 0.0 0.0 120100 3536 pts/0 Sl 23:10 0:00 ceph-fuse -m log3,log21,squid86-log12 /mnt/bc root 1404 0.0 0.0 16192 700 pts/0 S 23:10 0:00 ls --color=auto /mnt/bc Is my test method wrong, or missed something while mount? >From the mount.ceph man page, when I mounted with multiple monitor, it should be OK when one monitor dead. Has the monitor must be really dead. or just isn't reachable from the client? One more question, is there any timeout option could be used at mount time? osdtimeout and mount_timeout doesn't look like. -- 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