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RE: FW: I-D ACTION:draft-dusseault-dav-quota-01.txt

From: Julian Reschke <julian.reschke@gmx.de>
Date: Wed, 23 Oct 2002 20:41:48 +0200
To: "Eric Sedlar" <eric.sedlar@oracle.com>, "Julian Reschke" <julian.reschke@gmx.de>, "Lisa Dusseault" <lisa@xythos.com>, "'Stefan Eissing'" <stefan.eissing@greenbytes.de>, "Webdav WG" <w3c-dist-auth@w3c.org>
Message-ID: <JIEGINCHMLABHJBIGKBCAEEJFKAA.julian.reschke@gmx.de>

> From: w3c-dist-auth-request@w3.org
> [mailto:w3c-dist-auth-request@w3.org]On Behalf Of Eric Sedlar
> Sent: Wednesday, October 23, 2002 7:21 PM
> To: Julian Reschke; Lisa Dusseault; 'Stefan Eissing'; Webdav WG
> Subject: Re: FW: I-D ACTION:draft-dusseault-dav-quota-01.txt
> It seems like this draft is fine with a user-based rather than a
> system--the server will report the same usage & quota for any collection,
> will return different results depending on who is authenticated, no?
> ...

No. IMHO, the draft describes a very specific quota model, which it
shouldn't if it's to be implemented generally. For instance

"   Quota is not additive.  A collection only has the quota assigned to
   it, not (in addition) the quota assigned to sub collections or any
   other collections.  Sub-collections can have different quota values
   than parent collections.  These ˘sub-quota÷s may act as additional
   constraints, or they may be under-constrained and have no effect.
   This can allow the delegation of quota administration from root
   administrators to collection owners. "

will not work with a quota system that is per user and filesystem/server.

To make this proposal work in the general case, it needs to be more generic.
For instance, the only questions I can easily answer with a Unix-FS-based
quota system are:

- the storage limit (for the authenticated user)
- the current storage (for the user)

and possibly

- the amount of storage taken by a particular set of resources (and that may
be expensive to compute).


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Received on Wednesday, 23 October 2002 14:42:23 UTC

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