Dear all,
I have a serious problem with our Ceph cluster: One of our PGs somehow
ended up in this state (reported by "ceph health detail":
pg 1.XXX is stuck inactive for ..., current state unknown, last acting []
Also, "ceph pg map 1.xxx" reports:
osdmap e525812 pg 1.721 (1.721) -> up [] acting []
I can't use "ceph pg 1.XXX query", it just hangs with no output.
All OSDs are up and in, I have MON quorum, all other PGs seem to be fine.
How can diagnose/fix this? Unfortunately, the PG in question is part
of the CephFS metadata pool ...
Any help would be very, very much appreciated!
Cheers,
Oliver
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