Re: recurring stat mismatch on PG

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Hi,

Is that 15.2.17? It reminds me of this bug -
https://tracker.ceph.com/issues/52705 - where an object with a particular
name would hash to ffffffff and cause a stat mismatch during scrub. But
15.2.17 should have the fix for that.


Can you find the relevant osd log for more info?

.. Dan



On Sat, Oct 8, 2022, 10:42 Frank Schilder <frans@xxxxxx> wrote:

> Hi all,
>
> I seem to observe something strange on an octopus(latest) cluster. We have
> a PG with a stat mismatch:
>
> 2022-10-08T10:06:22.206+0200 7fa3c48c7700  0 log_channel(cluster) log
> [DBG] : 19.1fff deep-scrub starts
> 2022-10-08T10:22:33.049+0200 7fa3c48c7700 -1 log_channel(cluster) log
> [ERR] : 19.1fffs0 deep-scrub : stat mismatch, got 64532/64531 objects,
> 1243/1243 clones, 64532/64531 dirty, 0/0 omap, 0/0 pinned, 0/0
> hit_set_archive, 1215/1215 whiteouts, 170978253582/170974059278 bytes, 0/0
> manifest objects, 0/0 hit_set_archive bytes.
> 2022-10-08T10:22:33.049+0200 7fa3c48c7700 -1 log_channel(cluster) log
> [ERR] : 19.1fff deep-scrub 1 errors
>
> This exact same mismatch was found before and I executed a pg-repair that
> fixed it. Now its back. Does anyone have an idea why this might be
> happening and how to deal with it?
>
> Thanks!
> =================
> Frank Schilder
> AIT Risø Campus
> Bygning 109, rum S14
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