Quota per directory

[Ahmed Kamal]

I understand hard linked files are a logical problem for applying tree
quotas. However, I don't think such a problem should kill the whole
implementation! I'm happy with any solution, even if counting the file
multiple times was picked as the conservative solution. Who uses hard links
that much anyway. I hope that's not the only thing stopping a tree quotas
implementation

That's the only implementation I could find, doesn't look too up2date though
http://cgi.cse.unsw.edu.au/~neilb/wiki/

On 3/22/07, Horst H. von Brand <vonbrand at inf.utfsm.cl> wrote:
>
> Lamont Peterson <lamont at gurulabs.com> wrote:
> > On Wednesday 21 March 2007 02:14am, Ahmed Kamal wrote:
> > > Coming from a systems administration background, I was very surprised
> to
> > > find out that fedora (well Linux actually) doesn't have a per
> directory
> > > quota. It is very common and needed IMHO to have a quota per
> directory, as
> > > the directory basically represents a project some people are working
> on.
> > > One would want to make sure that a certain project would not consume
> all
> > > disk space. Only XFS seemed to have per "project" quota (I even think
> the
> > > Linux implementation doesn't have that!)
> >
> > Linux "only" has per-filesystem quota support.  You're asking for what's
> > called "tree quotas" support.
>
> And that is nonsense, as a file /doesn't/ exist "in a directory", the
> directory only holds the name and a reference to the actual file. So, a
> file can exist under many different names in assorted directories (hard
> links). How do you acount for that? Can't count it N times if there are N
> links, but if you count each link 1/N, deleting stuff here may get you
> past
> quota elsewhere (even other people who happen to link to the same file).
> Not nice.
> --
> Dr. Horst H. von Brand                   User #22616 counter.li.org
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>
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