Dear list, When I tried to add OSD manually, following the http://ceph.com/docs/v0.78/rados/operations/add-or-rm-osds/. It said: ssh {new-osd-host} ceph-osd -i {osd-num} --mkfs --mkkey But It won't create the empty sysvinit file as ceph-deploy does in centos. If we do not have sysvinit file or added OSD information to ceph.conf, /etc/init.d/ceph can not start the OSD. 1. this solution is very easy. change the document a bit, remind the user to create sysvinit file in /var/lib/ceph/osd/ceph-{osd-num}/ for centos. Or 2. add new options in ceph-osd command(such as ceph-osd -i {osd-num} --mkfs --mkkey --mkstart ), and change the document accordingly. any ideas? ---- Dongmao Zhang -- 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