linux-kernel - Re: fscache corruption in Linux 5.17?

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Message-ID: <510136.1650386821@warthog.procyon.org.uk>
Date:   Tue, 19 Apr 2022 17:47:01 +0100
From:   David Howells <dhowells@...hat.com>
To:     Max Kellermann <mk@...all.com>
Cc:     dhowells@...hat.com, linux-cachefs@...hat.com,
        linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: fscache corruption in Linux 5.17?

Max Kellermann <mk@...all.com> wrote:

> I don't think any write is misaligned.  This was triggered by a
> WordPress update, so I think the WordPress updater truncated and
> rewrote all files.  Random guess: some pages got transferred to the
> NFS server, but the local copy in fscache did not get updated.

Do the NFS servers change the files that are being served - or is it just
WordPress pushing the changes to the NFS servers for the web servers to then
export?

David