On Wed, 15 Oct 2014 11:06:55 -0500, Chad Seys <cwseys@xxxxxxxxxxxxxxxx> wrote: > Hi all, > When I remove all OSDs on a given host, then wait for all objects (PGs?) to > be to be active+clean, then remove the host (ceph osd crush remove hostname), > that causes the objects to shuffle around the cluster again. > Why does the CRUSH map depend on hosts that no longer have OSDs on them? > > A wonderment question, > C. > _______________________________________________ > ceph-users mailing list > ceph-users@xxxxxxxxxxxxxx > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com 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 The question should be "why you remove all OSDs if you are going to remove host anyway" :) -- Mariusz Gronczewski, Administrator Efigence S. A. ul. Wołoska 9a, 02-583 Warszawa T: [+48] 22 380 13 13 F: [+48] 22 380 13 14 E: mariusz.gronczewski@xxxxxxxxxxxx <mailto:mariusz.gronczewski@xxxxxxxxxxxx>
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