linux-ext4 - Re: task hung in ext4

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Message-ID: <20231026024829.vcnlmdmwi5hjjquz@awork3.anarazel.de>
Date:   Wed, 25 Oct 2023 19:48:29 -0700
From:   Andres Freund <andres@...razel.de>
To:     Jens Axboe <axboe@...nel.dk>
Cc:     Dave Chinner <david@...morbit.com>, Theodore Ts'o <tytso@....edu>,
        Thorsten Leemhuis <regressions@...mhuis.info>,
        Shreeya Patel <shreeya.patel@...labora.com>,
        linux-ext4@...r.kernel.org,
        Ricardo Cañuelo <ricardo.canuelo@...labora.com>,
        gustavo.padovan@...labora.com, zsm@...gle.com, garrick@...gle.com,
        Linux regressions mailing list <regressions@...ts.linux.dev>,
        io-uring@...r.kernel.org
Subject: Re: task hung in ext4_fallocate #2

Hi,

On 2023-10-25 09:14:05 -0700, Andres Freund wrote:
> On 2023-10-25 09:36:01 -0600, Jens Axboe wrote:
> > On 10/25/23 9:31 AM, Andres Freund wrote:
> > > Hi,
> > >
> > > On 2023-10-24 18:34:05 -0600, Jens Axboe wrote:
> > >> Yeah I'm going to do a revert of the io_uring side, which effectively
> > >> disables it. Then a revised series can be done, and when done, we could
> > >> bring it back.
> > >
> > > I'm queueing a test to confirm that the revert actually fixes things.
> > > Is there still benefit in testing your other patch in addition
> > > upstream?
> >
> > Don't think there's much point to testing the quick hack, I believe it
> > should work. So testing the most recent revert is useful, though I also
> > fully expect that to work.
>
> I'll leave it running for a few hours, just to be sure.

Quite a few hours and > 15TBW written later, no hang....

Greetings,

Andres Freund