Re: Ceph scrub logs: _scan_snaps no head for $object?

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Quoting Sage Weil (sage@xxxxxxxxxxxx):
> Hi Stefan, Mehmet,
> 
> Are these clusters that were upgraded from prior versions, or fresh 
> luminous installs?

Fresh luminous install... The cluster was installed with
12.2.0, and later upgraded to 12.2.1 and 12.2.2.

> This message indicates that there is a stray clone object with no 
> associated head or snapdir object.  That normally should never 
> happen--it's presumably the result of a (hopefully old) bug.  The scrub 
> process doesn't even clean them up, which maybe says something about how 
> common it is/was...

Hmm. This is still a pre-production cluster. Most tests have been done
using rbd. We did make some rbd clones / snapshots here and there. We will
re-install this cluster with a fresh 12.2.2 and try to reproduce.

Gr. Stefan

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