5 Feb
2021
5 Feb
'21
3:52 p.m.
Eeek! Don't run `osd_find_best_info_ignore_history_les = true` -- that
leads to data loss even such that you don't expect.
Are you sure all OSDs are up?
Query a PG to find out why it is unknown: `ceph pg <id> query`. Feel
free to share that
In fact, the 'unknown' state means the MGR doesn't know the state of
the PG -- is your MGR running correctly now?
-- Dan
On Fri, Feb 5, 2021 at 4:49 PM Jeremy Austin <jhaustin(a)gmail.com> wrote:
>
> I was in the middle of a rebalance on a small test cluster with about 1% of
> pgs degraded, and shut the cluster entirely down for maintenance.
>
> On startup, many pgs are entirely unknown, and most stale. In fact most pgs
> can't be queried! No mon failures. Would osd logs tell me why pgs aren't
> even moving to an inactive state?
>
> I'm not concerned about data loss due to the shutdown (all activity to the
> cluster had been stopped), so should I be setting some or all OSDs "
> osd_find_best_info_ignore_history_les = true"?
>
> Thank you,
>
> --
> Jeremy Austin
> jhaustin(a)gmail.com
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