Re: How can user home directory quotas be automatically set on CephFS?

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Hi Artur,
we did write a script (in fact a series of scripts) that we use to
manage our users and their quotas. Our script adds a new user to our
LDAP and sets the default quotas for various storage areas. Quota
information is kept in the LDAP. Another script periodically scans the
LDAP for changes and creates directories and adjusts quotas
accordingly.

I have a more detailed description of how we use cephfs to provide home
directories on my blog here:
https://blogs.ed.ac.uk/mhagdorn/2020/08/04/school-of-geosciences-file-storage/

Hope this helps.
magnus

On Tue, 2021-11-02 at 13:31 +0200, Artur Kerge wrote:
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>
> Hello!
>
> As I understand CephFS user max file and byte quotas
> (ceph.quota.max_{files,bytes}) can be set on an MDS (or CephFS
> client) via
> setfattr command (https://docs.ceph.com/en/octopus/cephfs/quota/).
>
> My question is, how can the quotas be set automatically for every new
> user's home directory?
>
> Currently the setup of adding a user and setting limits is following:
> new
> user is added on LDAP, home folder is created with skel on CephFS
> (mounted
> via kernel driver) and then the ceph.quota's are set. I'd like to
> automate
> the last step.
>
> One possible option is to create a script, that sets the
> max_bytes/files
> limits after folder creation but that seems hack-y.
>
> To re-iterate, is there a way to automatically set quota limits on a
> CephFS
> directory?
>
> Best regards
> Artur Kerge
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