Hey Ilya,
Thanks so much for the patches, we are planning to test them either this afternoon or tomorrow at the latest, I will let you know the results.
Regards,
Robin Geuze
From: Ilya Dryomov <idryomov@xxxxxxxxx>
Sent: 06 July 2021 19:21
To: Robin Geuze
Cc: Ceph Development
Subject: Re: All RBD IO stuck after flapping OSD's
On Tue, Jun 29, 2021 at 12:07 PM Ilya Dryomov <idryomov@xxxxxxxxx> wrote:
>
> On Tue, Jun 29, 2021 at 10:39 AM Robin Geuze <robin.geuze@xxxxxxxxxxxx> wrote:
> >
> > Hey Ilya,
> >
> > Do you have any idea on the cause of this bug yet? I tried to dig around a bit myself in the source, but the logic around this locking is very complex, so I couldn't figure out where the problem is.
>
> I do. The proper fix would indeed be large and not backportable but
> I have a workaround in mind that should be simple enough to backport
> all the way to 5.4. The trick is making sure that the workaround is
> fine from the exclusive lock protocol POV.
>
> I'll try to flesh it out by the end of this week and report back
> early next week.
Hi Robin,
I CCed you on the patches. They should apply to 5.4 cleanly. You
mentioned you have a build farm set up, please take them for a spin.
Thanks,
Ilya
