Hi Mariusz, > Usually removing OSD without removing host happens when you > remove/replace dead drives. > > Hosts are in map so > > * CRUSH wont put 2 copies on same node > * you can balance around network interface speed
That does not answer the original question IMO: "Why does the CRUSH map depend on hosts that no longer have OSDs on them?" But I think it does answer the question "Why does the CRUSH map depend on OSDs AND hosts?" > The question should be "why you remove all OSDs if you are going to > remove host anyway" :) This is your question, not mine! :) I am decommissioning the entire node. What is the recommended (fastest yet safe) way of doing this? I am currently follwing the current procedure for all osdnum on server: ceph osd crush remove osd.osdnum #wait for health to not be degraded, migration stops for all osdnum on server: stop osdnum on server ceph auth del osd.osdnum ceph osd rm osdnum # no new migration # remove server with no OSD from CRUSH ceph osd crush remove server # lots of migration! Thanks! C. _______________________________________________ ceph-users mailing list [email protected] http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
