On 09/29/16 14:07, Ranjan Ghosh wrote: > Wow. Amazing. Thanks a lot!!! This works. 2 (hopefully) last questions > on this issue: > > 1) When the first node is coming back up, I can just call "ceph osd up > 0" and Ceph will start auto-repairing everything everything, right? > That is, if there are e.g. new files that were created during the time > the first node was down, they will (sooner or later) get replicated > there? Nope, there is no "ceph osd up <id>"; you just start the osd, and it already gets recognized as up. (if you don't like this, you set it out, not just down; and there is a "ceph osd in <id>" to undo that.) > > 2) If I don't call "osd down" manually (perhaps at the weekend when > I'm not at the office) when a node dies - did I understand correctly > that the "hanging" I experienced is temporary and that after a few > minutes (don't want to try out now) the node should also go down > automatically? I believe so, yes.
Also, FYI, RBD images don't seem to have this issue, and work right away on a 3 osd cluster. Maybe cephfs would also work better with a 3rd osd, even an empty one (weight=0). (and I had an unresolved issue testing the same with cephfs on my virtual test cluster) > > BR, > Ranjan > > > Am 29.09.2016 um 13:00 schrieb Peter Maloney: >> >> And also you could try: >> ceph osd down <osd id> > _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
