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Re: Enforcing quota for root user

To: Eric Sandeen <sandeen@xxxxxxxxxxx>
Subject: Re: Enforcing quota for root user
From: Dave Chinner <david@xxxxxxxxxxxxx>
Date: Wed, 12 Nov 2014 10:34:19 +1100
Cc: Chris Murphy <lists@xxxxxxxxxxxxxxxxx>, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>, xfs@xxxxxxxxxxx
Delivered-to: xfs@xxxxxxxxxxx
In-reply-to: <54628F7B.7080604@xxxxxxxxxxx>
References: <67EDE14C-CCFB-4B42-8B78-FC6C813CD19A@xxxxxxx> <5461B333.8050609@xxxxxxxxxxxxxxxxx> <F7ACFF71-460D-40E7-999C-BFC8D232EA81@xxxxxxx> <54622CE8.7050508@xxxxxxxxxxxxxxxxx> <631A9090-F9FE-4B8E-88CD-1B30CAFC65B7@xxxxxxxxxxxxxxxxx> <20141111223203.GS28565@dastard> <54628F7B.7080604@xxxxxxxxxxx>
User-agent: Mutt/1.5.21 (2010-09-15)
On Tue, Nov 11, 2014 at 04:36:43PM -0600, Eric Sandeen wrote:
> On 11/11/14 4:32 PM, Dave Chinner wrote:
> > On Tue, Nov 11, 2014 at 11:00:25AM -0700, Chris Murphy wrote:
> >>
> >> On Nov 11, 2014, at 8:36 AM, Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> wrote:
> >>
> >>> On 11/11/2014 04:22 AM, Cyril Scetbon wrote:
> >>>> That's what I've read first, but someone showed me a sample where it 
> >>>> works. He just told me he was using project quota. However, does it make 
> >>>> sense ? 
> >>>> I've also read somewhere else that quota is never enforced for root user 
> >>>> (id,gid=0) that's why I was testing it ....
> >>>
> >>> No, it doesn't make sense.  Why would you want to enforce quotas for root?
> >>
> >> A week ago I tried this and project quotas appear to apply to root.
> > 
> > By intent and design. Project quotas are not a user/group based
> > quota and so there is no exemption for any user.
> However, at least according to the manpage, "project ID 0" is not
> enforced.  Granted, that is not a *user* exception.

Correct, and again by intent and design as project quotas are
optional.  i.e. there has to be some way of ensuring non-project ID
controlled files won't have quota enforcement applied to them. ;)


Dave Chinner

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