On 02/03/16 02:41, Robert LeBlanc wrote:
With a fresh disk, you will need to remove the old key in ceph (ceph auth del osd.X) and the old osd (ceph osd rm X), but I think you can leave the CRUSH map alone (don't do ceph osd crush rm osd.X) so that there isn't any additional data movement (if there aren't any available OSD numbers less than the OSD being replaced, it will get the same ID. There may also be a way to specify an ID, but I haven't used it). Then when you add the new disk in, it only backfills what the previous disk had, unless the size is different, then it will take on more or less and shuffle some things around the cluster.
Thanks Robert, that makes sense. I'll try it out tonight. -- Lindsay Mathieson _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
