[lustre-discuss] Reproducer for known Arm/X86 pagesize issue LU-17525

[Tom Green]

Hi,

Thanks for the input.  User is not near quota and can just rerun the job and it works so its not a repeatable operation which makes it harder to diagnose if the software is doing something particular strange (that is why we only see it in particular software) which we could workaround in the meantime some-how.

Hopefully with the information we do obtain when it freezes it is pointing us to some possible solution.

Tom

From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org> on behalf of Shaun Tancheff via lustre-discuss <lustre-discuss at lists.lustre.org>
Date: Thursday, 2 October 2025 at 04:02
To: lustre-discuss at lists.lustre.org <lustre-discuss at lists.lustre.org>
Subject: Re: [lustre-discuss] Reproducer for known Arm/X86 pagesize issue LU-17525
On 10/1/25 15:19, Tom Green via lustre-discuss wrote:
> Hi,
>
> Currently experiencing, on rare occasions, hung IO activity where we
> suspect is related to:
>
> https://jira.whamcloud.com/browse/LU-17525 <https://urldefense.com/v3/
> __https://jira.whamcloud.com/browse/LU-17525__;!!NpxR!
> htdOeS8P8g4PHzBcH65G_4DY52dNiVAnvVnbuSftCWx2JLNJRqb09DoT8OwvcXb02xFR-3b7gGHP6_lL23MI-YpaGvakGejz$>
>
> We have aarch64 clients at 64k page sizes with x86 servers with 4kb
> pagesize using Lustre 2.15 from HPE.  We see the same error reported in
> the issue and would like an easy way to reproduce the issue so we can
> check other similar storage systems.  Would a test have been added
> somewhere to make sure the same issue is not encountered again in the
> future?
>
> Any advice would be appreciated

Quota?
This was landed to work around quota hitting a similar hang with quota:
https://jira.whamcloud.com/browse/LU-18691


LU-19180 is in progress to resolve the interop:
https://jira.whamcloud.com/browse/LU-19180


> Thanks.
>
>
> Tom
>
> --
>
> *Thomas Green*
> _AI Supercomputing Infrastructure Specialist_
>
> University of Bristol, 1 Cathedral Square, Trinity Street, College
> Green, Bristol
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>
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>
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