Re: osdmaps not trimmed until ceph-mon's restarted (if cluster has a down osd)

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On 19/11/14 11:04AM, Gregory Farnum wrote:
> On Thu, Nov 14, 2019 at 8:14 AM Dan van der Ster <dan@xxxxxxxxxxxxxx> wrote:
> >
> > Hi Joao,
> >
> > I might have found the reason why several of our clusters (and maybe
> > Bryan's too) are getting stuck not trimming osdmaps.
> > It seems that when an osd fails, the min_last_epoch_clean gets stuck
> > forever (even long after HEALTH_OK), until the ceph-mons are
> > restarted.
> >
> > I've updated the ticket: https://tracker.ceph.com/issues/41154
> 
> Wrong ticket, I think you meant https://tracker.ceph.com/issues/37875#note-7

I've seen this behavior a long, long time ago, but stopped being able to
reproduce it consistently enough to ensure the patch was working properly.

I think I have a patch here:

  https://github.com/ceph/ceph/pull/19076/commits

If you are feeling adventurous, and want to give it a try, let me know. I'll
be happy to forward port it to whatever you are running.

  -Joao
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