Re: [PATCH 1/3] NFSv4: Fix a livelock when CLOSE pre-emptively bumps state sequence

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On Tue, Sep 22, 2020 at 10:22 AM Benjamin Coddington
<bcodding@xxxxxxxxxx> wrote:
>
> On 22 Sep 2020, at 10:03, Anna Schumaker wrote:
> > Hi Ben,
> >
> > Once I apply this patch I have trouble with generic/478 doing lock reclaim:
> >
> > [  937.460505] run fstests generic/478 at 2020-09-22 09:59:14
> > [  937.607990] NFS: __nfs4_reclaim_open_state: Lock reclaim failed!
> >
> > And the test just hangs until I kill it.
> >
> > Just thought you should know!
>
> Yes, thanks!  I'm not seeing that..  I've tested these based on v5.8.4, I'll
> rebase and check again.  I see a wirecap of generic/478 is only 515K on my
> system, would you be willing to share a capture of your test failing?

I have it based on v5.9-rc6 (plus the patches I have queued up for
v5.10), so there definitely could be a difference there! I'm using a
stock kernel on my server, though :)

I can definitely get you a packet trace once I re-apply the patch and
rerun the test.

Anna

>
> Ben
>



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