From owner-freebsd-questions@FreeBSD.ORG  Wed Jan 11 13:31:42 2006
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
X-Original-To: freebsd-questions@freebsd.org
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id ABB1816A41F
	for <freebsd-questions@freebsd.org>;
	Wed, 11 Jan 2006 13:31:42 +0000 (GMT)
	(envelope-from dvorakv@vdsoft.org)
Received: from poseidon.vdsoft.org (poseidon.vdsoft.org [193.85.147.250])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 368AD43D45
	for <freebsd-questions@freebsd.org>;
	Wed, 11 Jan 2006 13:31:41 +0000 (GMT)
	(envelope-from dvorakv@vdsoft.org)
Received: from localhost (unknown [127.0.0.1])
	by poseidon.vdsoft.org (Postfix) with ESMTP id B468747E532;
	Wed, 11 Jan 2006 14:31:37 +0100 (CET)
Received: from poseidon.vdsoft.org ([127.0.0.1])
	by localhost (poseidon.vdsoft.org [127.0.0.1]) (amavisd-new, port 10024)
	with ESMTP id 82361-06; Wed, 11 Jan 2006 14:31:35 +0100 (CET)
Received: from [10.0.0.132] (laptop.home.deltaeng.com [10.0.0.132])
	by poseidon.vdsoft.org (Postfix) with ESMTP id A361F47E530;
	Wed, 11 Jan 2006 14:31:35 +0100 (CET)
Message-ID: <43C508BA.1090303@vdsoft.org>
Date: Wed, 11 Jan 2006 14:31:38 +0100
From: Vladimir Dvorak <dvorakv@vdsoft.org>
User-Agent: Debian Thunderbird 1.0.7 (X11/20051017)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: =?windows-1250?Q?Bj=F6rn_K=F6nig?= <bkoenig@cs.tu-berlin.de>
References: <43C4D004.90101@vdsoft.org> <43C505F8.4030307@cs.tu-berlin.de>
In-Reply-To: <43C505F8.4030307@cs.tu-berlin.de>
X-Enigmail-Version: 0.93.0.0
Content-Type: text/plain; charset=windows-1250
Content-Transfer-Encoding: 8bit
X-Virus-Scanned: amavisd-new at vdsoft.org
Cc: freebsd-questions@freebsd.org
Subject: Re: quotas + jail ?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 11 Jan 2006 13:31:42 -0000

Björn König wrote:

> Vladimir Dvorak schrieb:
>
>> I have simple question - is possible to use quotas in jail(8)
>> environment ?
>> [...]
>>
>> It seems to be impossible ( some kernel restriction ). :-( Is there some
>> way to allow this ? My last idea was to replicate users and groups to
>> "main" system and use quotas from it - but it is not good solution if we
>> have several hundreds users in jail(8).
>
>
> You don't need to replicate users and groups, just use UIDs and GIDs.
> There is a serious disadvantage: if you set quota for a specific UID
> then it affects all users with the same UID in different jails and
> even at the host; I guess this is not what you want.
>
> If you want to restrict the space that can be consumed by a jail then
> you might use memory devices, i.e.
>
> # create 1 GiB file
> $ dd if=/dev/zero of=myjail321 count=16k bs=64k
> $ mdconfig -af myjail321
> md321
> $ mkdir /jail/myjail321
> $ mount /dev/md321 /jail/myjail321
> $ cd /usr/src
> $ make installworld DESTDIR=/jail/myjail321
>
> and so on ...
>
>
> Regards
> Björn
>
Thank you Björn,

I thing it is possible. I will shift existing UIDs ( in jail) to higher
values (50000-> ) and apply quotas on them. I will try to eliminate UID
mixing.

Thank you for your suggestion.

Vladimir