On my relatively new Octopus cluster, I have one PG that has been
perpetually stuck in the 'unknown' state. It appears to belong to the
device_health_metrics pool, which was created automatically by the mgr
daemon(?).
The OSDs that the PG maps to are all online and serving other PGs. But
when I list the PGs that belong to the OSDs from 'ceph pg map', the
offending PG is not listed.
# ceph pg dump pgs | grep ^1.0
dumped pgs
1.0 0 0 0 0 0
0 0 0 0 0 unknown
2020-08-08T09:30:33.251653-0500 0'0 0:0
[] -1 [] -1
0'0 2020-08-08T09:30:33.251653-0500 0'0
2020-08-08T09:30:33.251653-0500 0
# ceph osd pool stats device_health_metrics
pool device_health_metrics id 1
nothing is going on
# ceph pg map 1.0
osdmap e7199 pg 1.0 (1.0) -> up [41,40,2] acting [41,0]
What can be done to fix the PG? I tried doing a 'ceph pg repair 1.0',
but that didn't seem to do anything.
Is it safe to try to update the crush_rule for this pool so that the PG
gets mapped to a fresh set of OSDs?
--Mike
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