2011/6/2 biyan chen <riby.chen@xxxxxxxxx>: > 2011-06-02 16:27:35.010776 7f3f53940720 unable to authenticate as client.admin That's your problem. You don't have your keys set up properly to authenticate as the admin on those nodes. :) I suspect permissions problems are the cause of your other issues with file writing as well. How did you set up this cluster? Try recreating your cluster by carefully following the instructions at http://ceph.newdream.net/wiki/Creating_a_new_file_system -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