support for quota

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Christian Iseli

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Jan 20, 2012, 9:48:53 AM1/20/12

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Hi,

Do you have plans for quota support ? Preferably directory-based quotas...

I did not see this question addressed in the FAQ.

Can the quota of the underlying filesystems (in my case XFS, which is used on the storage nodes) be somehow used to limit some users from completely filling up an fhgfs filesystem ?

Thanks and regards,

Christian

Sven Breuner

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Jan 20, 2012, 10:02:29 AM1/20/12

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Hi Christian,

Christian Iseli wrote on 01/20/2012 03:48 PM:
> Do you have plans for quota support ? Preferably directory-based quotas...

yes, directory-based quota has high priority on our todo-list and will
definitely come (we receive a lot of requests for this), but it will
still take a few months, as it is a complicated thing to implement when
the performance impact should be minimal.

> Can the quota of the underlying filesystems (in my case XFS, which is
> used on the storage nodes) be somehow used to limit some users from
> completely filling up an fhgfs filesystem ?

No, fhgfs does not store the file chunks on the server with the
client-side user ID, so the quota-mechanism of the underlying file
system cannot be applied.

What we typically recommend to have at least some kind of
admin-notification when a user exceeds a certain quota limit, is the
robinhood policy engine: http://robinhood.sf.net
Maybe that would be interesting for you to pass the time until fhgfs has
quota support.