> I guess we will wait 3-4 days for cluster recovery to finish and I will
> update you if something happens once it's HEALTH_OK.
>
> Is there a way to force epoch/osdmap trimming on rebalancing cluster?
I would use
https://github.com/cernceph/ceph-scripts/blob/master/tools/upmap/upmap-remapped.py
A pass or two of that will enter upmaps to obviate the current backfill. If
you also temporarily disable the balancer you should very quickly get to a
point with no backfill_wait. Then after the trimming and the dust settles you
should re-enable the balancer to finish.
> Afaik there no way to do it. It would be nice if we had such ability. It's
> not the first time we have this class of issues (big mon DBs). I would
> consider it a major flaw of the ceph. It cannot get healthier until it's not
> in a perfectly healthy state.
>
> Best regards
> Adam Prycki
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