Is Samba AIO affected by recent Linux data corruption bug?

[Andrew Bartlett]

On Thu, 2023-12-14 at 08:38 +0100, Bram Matthys via samba-technical
wrote:
> Hi everyone,
> In relation to the recent Linux filesystem corruption bug with
> O_DIRECT [1]. I read that to trigger this, an application needs to
> use O_DIRECT and that the bug is that the file position is not
> updated properly. So the bug does not happen with pwrite(), or if
> lseek() is always called prior.

No, Samba does not use O_DIRECT (and it would be a lot of work to make
it do so, I investigated this once!) in the file server.
An incredibly rarely used client tool, cifsdd, uses it optionally with
--direct
Andrew Bartlett

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Andrew Bartlett (he/him)       https://samba.org/~abartlet/Samba Team Member (since 2001) https://samba.orgSamba Team Lead                https://catalyst.net.nz/services/sambaCatalyst.Net Ltd
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