[lustre-devel] New contributor inquiry – status of LU-1643 (“reserved space” in statfs/df) and guidance requested

[GEORGE ZHAO]

Thank you, Andreas!
I'm currently looking into LU-7880. Will follow up if I have an
implementation plan or run into any questions (quite likely).

By the way, should I reach out to the lustre-devel for questions like this,
or is there a more specific channel?

Thanks!
George

On Wed, Apr 30, 2025 at 4:44 AM Andreas Dilger <adilger at ddn.com> wrote:

> Hi George,
> thanks for your interest.  There are definitely a number of open tickets
> in the "easy" (and "medium") categories that you could work on, though
> there have been a number of interns and new hires working on those tickets
> recently and fewer are now available.
>
> LU-1643 happens to be the oldest "easy" ticket, but don't let that guide
> your selection.  I would suggest you take a look through the whole list and
> pick something that is of interest to you and/or matches your experience
> level.
>
> - LU-16738 <https://jira.whamcloud.com/browse/LU-16738> - Improve
> mount.lustre with many MGS NIDs
> <https://jira.whamcloud.com/browse/LU-16738>: this is partly a userspace
> (mount.lustre) change and partly in the kernel (though not incredibly
> complex).  This is actually in the "useful" category that provides improved
> functionality for something that is seen regularly.
>
>
> If you are feeling more adventurous, you might look at one of the "medium"
> tickets, which may not be too difficult:
> - LU-7880 <https://jira.whamcloud.com/browse/LU-7880> - add OST/MDT
> performance statistics to obd_statfs
> <https://jira.whamcloud.com/browse/LU-7880>:  this is a very useful
> feature that would allow clients/user applications to probe the IO load on
> OSTs, and self-optimize checkpoint IO to times when the OSTs are less busy
> - LU-13123 <https://jira.whamcloud.com/browse/LU-13123> - Add list of
> client NIDs to job_stats output
> <https://jira.whamcloud.com/browse/LU-13123>: this would associate all of
> the clients that are contributing to the job_stats for a specific JobID,
> and would be useful for debugging and monitoring/
>
> On Apr 29, 2025, at 17:41, GEORGE ZHAO <georgezhaojobs at gmail.com> wrote:
>
>
> I'm a storage engineer and a Lustre beginner who just figured out how to
> deploy it. Did read a lot about it though.
> My goal is using Lustre to support HPC/ML workload. And I believe doing
> some tasks would help me proceed better.
>
> As wiki suggested, I found an "easy" ticket LU-1643: “Request to remove
> display of reserved space from statfs (df) total space.”
> Is it still unclaimed?
> If it's already in progress, or there's a higher priority issue that could
> use help, please point me in the right direction.
>
> Thanks in advance for any advice.
>
> Best regards,
> George
> _______________________________________________
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> lustre-devel at lists.lustre.org
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>
>
> Cheers, Andreas
> —
> Andreas Dilger
> Lustre Principal Architect
> Whamcloud/DDN
>
>
>
>
>
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