A while back we removed two damaged OSDs from our cluster, osd.0 and osd.8. They are now gone from most Ceph commands, but are still showing up in the CRUSH map with weird device names:
... # devices device 0 device0 device 1 osd.1 device 2 osd.2 device 3 osd.3 device 4 osd.4 device 5 osd.5 device 6 osd.6 device 7 osd.7 device 8 device8 device 9 osd.9 ... Can someone please explain why these are there, if they have any affect on the cluster, and whether or not we should remove them? device0 and device8 do not show up anywhere else in the CRUSH map. I am mainly asking because we are dealing with some stuck PGs (incomplete) which are still referencing id "8" in various places. Otherwise, "ceph osd tree" looks how I would expect (no osd.8 and no osd.0): djakubiec@dev:~$ ceph osd tree ID WEIGHT TYPE NAME UP/DOWN REWEIGHT PRIMARY-AFFINITY -1 58.19960 root default -2 7.27489 host node24 1 7.27489 osd.1 up 1.00000 1.00000 -3 7.27489 host node25 2 7.27489 osd.2 up 1.00000 1.00000 -4 7.27489 host node26 3 7.27489 osd.3 up 1.00000 1.00000 -5 7.27489 host node27 4 7.27489 osd.4 up 1.00000 1.00000 -6 7.27489 host node28 5 7.27489 osd.5 up 1.00000 1.00000 -7 7.27489 host node29 6 7.27489 osd.6 up 1.00000 1.00000 -8 7.27539 host node30 9 7.27539 osd.9 up 1.00000 1.00000 -9 7.27489 host node31 7 7.27489 osd.7 up 1.00000 1.00000 Thanks, -- Dan
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