From owner-freebsd-hackers@FreeBSD.ORG Fri Mar 2 15:59:32 2007 Return-Path: X-Original-To: freebsd-hackers@freebsd.org Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 32F1916A404; Fri, 2 Mar 2007 15:59:32 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from mh1.centtech.com (moat3.centtech.com [64.129.166.50]) by mx1.freebsd.org (Postfix) with ESMTP id 01E4C13C49D; Fri, 2 Mar 2007 15:59:31 +0000 (UTC) (envelope-from anderson@freebsd.org) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh1.centtech.com (8.13.8/8.13.8) with ESMTP id l22FxVVV032190; Fri, 2 Mar 2007 09:59:31 -0600 (CST) (envelope-from anderson@freebsd.org) Message-ID: <45E849E3.1080007@freebsd.org> Date: Fri, 02 Mar 2007 09:59:31 -0600 From: Eric Anderson User-Agent: Thunderbird 1.5.0.9 (X11/20070204) MIME-Version: 1.0 To: Steven Hartland References: <00cb01c75c5b$4205e390$b3db87d4@multiplay.co.uk> <45E82660.4030107@freebsd.org> <008101c75cd1$42a4df10$b3db87d4@multiplay.co.uk> <45E830A8.8020104@freebsd.org> <20070302144409.GA4431@icarus.home.lan> <00eb01c75ce0$b0430380$b3db87d4@multiplay.co.uk> In-Reply-To: <00eb01c75ce0$b0430380$b3db87d4@multiplay.co.uk> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.88.4/2701/Fri Mar 2 08:16:16 2007 on mh1.centtech.com X-Virus-Status: Clean X-Spam-Status: No, score=-2.6 required=8.0 tests=BAYES_00 autolearn=ham version=3.1.6 X-Spam-Checker-Version: SpamAssassin 3.1.6 (2006-10-03) on mh1.centtech.com Cc: freebsd-hackers@freebsd.org, Jeremy Chadwick , freebsd-stable@freebsd.org Subject: Re: sysinstall creates corrupt filesystems after repartitioning X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 02 Mar 2007 15:59:32 -0000 On 03/02/07 09:37, Steven Hartland wrote: > Jeremy Chadwick wrote: >> On Fri, Mar 02, 2007 at 08:11:52AM -0600, Eric Anderson wrote: >>> Mounting an NFS share on top of a skimmed down /usr is very common, >>> and very desirable. You may mount /usr from a small read-only >>> partition (vnode file, etc) and then mount a different partition or >>> NFS over it if you detect the one you want. >>> >>> I think this comes down to: if it hurts, stop doing it. :) >>> >>> Maybe sysinstall should warn you that you are double mounting, but I >>> don't want it to stop letting me do it. >> Are we absolutely sure overlaying NFS + local UFS filesystems like >> this is the cause of the filesystem corruption? >> >> If Eric's doing it and it's working fine, I'm left wondering if >> there's maybe sysinstall isn't handling something right. > > I've rerun the test just to confirm but there are definitely > two seperate issues here: > 1. The ufs created by sysinstall after a repartition is corrupt. > This is totally unrelated to the overlay of /usr as both /usr > and /data ( which didnt previously exist ) where corrupted. > > 2. Once the blank /usr was mounted over the working nfs /usr > apps under /usr couldnt be run e.g. vim gave me no such file.. > After unmounting the ufs /usr using "umount -f /dev/da0s1f", > without -f it gave a error due to use even know nothing was > in use on it, the functionaility returned. Now this could > be related to the corruption of the underlying ufs partition. > If this is the case then solving #1 will also fix #2 So try the same test, with *only* the data partition, without messing with the /usr stuff.. Eric