hi doing some testing I've made some mistakes and configured the same device for "btrfs devs" and "osd journal". I then ran happily "mkcephfs -c /etc/ceph/ceph.conf --mkbtrfs", started ceph, mounted it and wrote to it, umounted and stopped ceph. no errors thrown. Either ceph does some magic when the journal is on the same device as the osd btrfs or it should already stop on parsing the conf if a device is configured twice. :) - Thomas -- 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