From owner-freebsd-current@FreeBSD.ORG  Thu Sep  1 16:47:45 2005
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
X-Original-To: freebsd-current@FreeBSD.org
Delivered-To: freebsd-current@FreeBSD.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 0688116A41F;
	Thu,  1 Sep 2005 16:47:45 +0000 (GMT)
	(envelope-from tataz@tataz.chchile.org)
Received: from postfix3-1.free.fr (postfix3-1.free.fr [213.228.0.44])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 9690143D45;
	Thu,  1 Sep 2005 16:47:44 +0000 (GMT)
	(envelope-from tataz@tataz.chchile.org)
Received: from tatooine.tataz.chchile.org
	(vol75-8-82-233-239-98.fbx.proxad.net [82.233.239.98])
	by postfix3-1.free.fr (Postfix) with ESMTP id 2A11A173498;
	Thu,  1 Sep 2005 18:47:41 +0200 (CEST)
Received: by tatooine.tataz.chchile.org (Postfix, from userid 1000)
	id 1D660405A; Thu,  1 Sep 2005 18:47:58 +0200 (CEST)
Date: Thu, 1 Sep 2005 18:47:58 +0200
From: Jeremie Le Hen <jeremie@le-hen.org>
To: Suleiman Souhlal <ssouhlal@FreeBSD.org>
Message-ID: <20050901164757.GQ659@obiwan.tataz.chchile.org>
References: <m33bot5e33.fsf@merlin.emma.line.org>
	<20050830124435.GW659@obiwan.tataz.chchile.org>
	<20050830232818.GA83944@xor.obsecurity.org>
	<m3wtm2ifes.fsf@merlin.emma.line.org>
	<66A71CA4-8134-43A3-BEAB-485C7DF59EA1@FreeBSD.org>
	<20050831130254.GF659@obiwan.tataz.chchile.org>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20050831130254.GF659@obiwan.tataz.chchile.org>
User-Agent: Mutt/1.5.9i
Cc: freebsd-current@FreeBSD.org, Matthias Andree <matthias.andree@gmx.de>,
	Jeremie Le Hen <jeremie@le-hen.org>, Kris Kennaway <kris@obsecurity.org>
Subject: Re: nfs through nullfs
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 01 Sep 2005 16:47:45 -0000

Hi Suleiman,

> > Can you try the patch at http://people.freebsd.org/~ssouhlal/testing/ 
> > null_vnops.c-20050831.diff ?
> 
> Thanks.
> 
> I'll give a try to this patch later today if I can find some time.
> I will test it tomorrow otherwise.

The patch removes the panic for a NFS filesystem which you null mount
somewhere else.
%%%
    # mount -t nfs obiwan:/home/ncvs /nfs/obiwan/cvs
    # mount_nullfs /nfs/obiwan/cvs /cvs
    # cd /sys
    # cat CVS/Root
    /cvs
    # cvs diff -up
    [...]
%%%

No panic any more.  Thank you ! :-)

Regards,
-- 
Jeremie Le Hen
< jeremie at le-hen dot org >< ttz at chchile dot org >