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

[Andreas Dilger]

There is a Slack channel, which is linked from wiki.lustre.org "lists" page that you can use for simple discussions. Email is probably better for complex questions.

Cheers, Andreas

On Apr 30, 2025, at 20:18, GEORGE ZHAO <georgezhaojobs at gmail.com> wrote:


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<mailto: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<mailto: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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Cheers, Andreas
—
Andreas Dilger
Lustre Principal Architect
Whamcloud/DDN




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