[Dovecot] Dovecot shared quota with Maildir

[Timo Sirainen]

Well.. With dict quota you could already do this, but quota
recalculation wouldn't work right. Quota recalculation shouldn't happen
normally though, so you might get away with it. But to fix quota
recalculation you'd have to do something like you're describing I
guess..

With v1.2 this would be somewhat easier I think, because it allows you
to create new user structures, look up their home dirs (by querying
dovecot-auth) and calculate their quotas. But you'd still need a way to
get a list of usernames who share the quota.

All of this is actually related to "domain quotas" that I've been
thinking about for a long time. If there was a way to recalculate the
quota for multiple users I'd be interested in getting the code added to
Dovecot.

On Tue, 2009-03-10 at 11:59 +0900, Jorgen Lundman wrote:
> Since I could issue an LDAP query for 
> (&(uidNumber=%uid)(gidNumber=%gid)) for homeDirectory to retrieve all 
> home directory paths, and associated mailDirSize files, I wonder if I 
> could extend dovecot to allow us to handle shared quota like the 
> fs-quota used to work.
> 
> Using symlinks between accounts would very quickly deteriorate.
> 
> Lund
> 
> 
> 
> 
> Jorgen Lundman wrote:
> > 
> > Hello list,
> > 
> > We are in the process of exploring the idea of moving from UFS with 
> > fs-quota to using softquotas in Dovecot (probably Maildir type, stored 
> > in LDAP, all ontop of NFS).
> > 
> > I have it setup, and it works rather well so far.
> > 
> > But there is one situation we can currently support, which I can not see 
> > a solution for with soft-quotas.
> > 
> > Generally customers get 1 email, with 1 quota.
> > 
> > But it is also possible for customers to get 1 quota, but create 
> > multiple mail accounts, all sharing the same quota. This is done by 
> > using the same UID for each account when using fs-quota.
> > 
> > (It is not that each account gets a fraction of the quota, but that all 
> > accounts add up to the one quota).
> > 
> > Is this still possible to do with soft-quotas. To share one set. Dovecot 
> > would have to go count files in multiple mail-directories so I would 
> > guess no.
> > 
> > Lund
> > 
> 
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