[lustre-discuss] File system global quota

[Andreas Dilger]

Probably the closest that could be achieved like this would be to set the ldiskfs reserved space on the OSTs like:

  tune2fs -m 10 /dev/sdX

That sets the root reserved space to 10% of the filesystem, and non-root users wouldn't be able to allocate blocks once the filesystem hits 90% full. This doesn't reserve specific blocks, just a percentage of the total capacity, so it should avoid fragmentation from the filesystem getting too full. 

Cheers, Andreas

> On Jul 20, 2023, at 08:11, Sebastian Oeste via lustre-discuss <lustre-discuss at lists.lustre.org> wrote:
> 
> Hi there,
> 
> we operate multiple lustre file systems at our side and wondering if it is possible to have a file system global quota in lustre?
> For example, that only 90 percent of the file system can be used. The Idea is to avoid situations where a file system is 99% full.
> I was looking through mount options and lfs-quota but there just quota for users, groups or projects.
> I there a way to achieve something like that?
> 
> Thanks,
> sebastian
> -- 
> Sebastian Oeste, M.Sc.
> Computer Scientist
> 
> Technische Universität Dresden
> Zentrum für Informationsdienste und Hochleistungsrechnen (ZIH)
> Tel. +49 (0)351 463-32405
> E-Mail: sebastian.oeste at tu-dresden.de
> _______________________________________________
> lustre-discuss mailing list
> lustre-discuss at lists.lustre.org
> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org