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From:   "Benjamin Coddington" <bcodding@redhat.com>
To:     "Anna Schumaker" <anna.schumaker@netapp.com>
Cc:     "Trond Myklebust" <trond.myklebust@hammerspace.com>,
        "Linux NFS Mailing List" <linux-nfs@vger.kernel.org>
Subject: Re: [PATCH 1/3] NFSv4: Fix a livelock when CLOSE pre-emptively bumps
 state sequence
Date:   Tue, 22 Sep 2020 10:22:17 -0400
Message-ID: <8DB79D4D-6986-4114-B031-43157089C2B5@redhat.com>
In-Reply-To: <CAFX2JfmeOm+-cpq6aTGnBNZLmAOwp8dykTWe7L6OU3mmnSw6rw@mail.gmail.com>
References: <5a7f6bbf4cf2038634a572f42ad80e95a8d0ae9c.1600686204.git.bcodding@redhat.com>
 <CAFX2JfmeOm+-cpq6aTGnBNZLmAOwp8dykTWe7L6OU3mmnSw6rw@mail.gmail.com>
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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?

Ben