Re: [LSF/MM ATTEND] FS jitter testing, network caching, Lustre, cluster filesystems.

[bfields@fieldses.org (J. Bruce Fields)]

On Sun, Jan 15, 2017 at 06:38:43PM -0500, Oleg Drokin wrote:
> Hello!
> 
>    I would like to attend filesystem track in the LSF/MM this year.
> 
>    Other than the obvious Lustre related stuff (ie hearing from Christoph
>    how bad Lustre is and what other parts of it we need to remove),
>    I can share hopefully useful testing methods we came up with in our group
>    that more people can benefit from apparently, as evidenced by some interest
>    from NFS people due to a bunch of problems I was able to uncover.

Yes, I remember at least this found some races after the server's NFSv4
state locking was rewritten.

--b.

>    I suspect other networking filesystems would benefit here.
> 
>    I also see there's potentially going to be a caching discussion that sounds
>    pretty relevant to Lustre too.
>    This probably would go hand-in-hand with a somewhat recent discusison with Al Viro
>    about potentially redoing "unmount the subtrees on dentry invalidation" that
>    appears to be overly aggressive now.
> 
>    A container support from filesystems is also very relevant to us since Lustre
>    is used more and more in such settings.
> 
> Bye,
>     Oleg--
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