The bug appears to have already been reported:
https://tracker.ceph.com/issues/51948

Also, it should be noted that the write append bug does sometimes
occur when writing from a single client, so controlling write patterns
is not sufficient to stop data loss.

On Wed, Sep 8, 2021 at 1:39 PM Frank Schilder <fr...@dtu.dk> wrote:
>
> Can you make the devs aware of the regression?
>
> Best regards,
> =================
> Frank Schilder
> AIT Risø Campus
> Bygning 109, rum S14
>
> ________________________________________
> From: Nathan Fish <lordci...@gmail.com>
> Sent: 08 September 2021 19:33
> To: ceph-users
> Subject: [ceph-users] Re: Data loss on appends, prod outage
>
> Rolling back to kernel 5.4 has resolved the issue.
>
> On Tue, Sep 7, 2021 at 3:51 PM Frank Schilder <fr...@dtu.dk> wrote:
> >
> > Hi Nathan,
> >
> > > Is this the bug you are referring to? 
> > > https://tracker.ceph.com/issues/37713
> >
> > yes, its one of them. I believe there were more such reports.
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