linux-ext4 - [Bug 201685] ext4 file system corruption

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Message-ID: <bug-201685-13602-mz6qzh4KHo@https.bugzilla.kernel.org/>
Date:   Sun, 02 Dec 2018 11:57:20 +0000
From:   bugzilla-daemon@...zilla.kernel.org
To:     linux-ext4@...r.kernel.org
Subject: [Bug 201685] ext4 file system corruption

https://bugzilla.kernel.org/show_bug.cgi?id=201685

--- Comment #136 from carlphilippreh@...il.com ---
(In reply to Rainer Fiebig from comment #132)
> (In reply to carlphilippreh from comment #129)
> > While I wasn't able to reproduce the bug for quite some time, it ended up
> > coming back. I'm currently running 4.19.6 and I see invalid metadata in
> > files that I have written using this version.
> 
> I think it could be helpful if you provided your .config(s) here.
> 
> And what kernel are you using: self-compiled/from your distribution (which)?
> If self-compiled: have you made changes to the .config?
> 
> The set-up of the boxes you mentioned in comment 5 seems just right to hunt
> this down. ;)

I'm configuring the kernels myself. Two things that I always enable and that
_might_ be related are:

CONFIG_BLK_WBT / CONFIG_BLK_WBT_MQ
and
CONFIG_CFQ_GROUP_IOSCHED

Maybe I can come up with a way to reproduce this bug more quickly. Writing a
lot of (small) files and then deleting them seems like a good way so far.

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