From owner-freebsd-fs@FreeBSD.ORG  Thu Aug 26 14:43:50 2004
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 70BFF16A4CE
	for <freebsd-fs@freebsd.org>; Thu, 26 Aug 2004 14:43:50 +0000 (GMT)
Received: from pooker.samsco.org (pooker.samsco.org [168.103.85.57])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 21E0C43D60
	for <freebsd-fs@freebsd.org>; Thu, 26 Aug 2004 14:43:50 +0000 (GMT)
	(envelope-from scottl@samsco.org)
Received: from [192.168.0.201] ([192.168.0.201])
	(authenticated bits=0)
	by pooker.samsco.org (8.12.11/8.12.10) with ESMTP id i7QEj2MR007134;
	Thu, 26 Aug 2004 08:45:03 -0600 (MDT)
	(envelope-from scottl@samsco.org)
Message-ID: <412DF685.4010505@samsco.org>
Date: Thu, 26 Aug 2004 08:41:09 -0600
From: Scott Long <scottl@samsco.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US; rv:1.7.1) Gecko/20040801
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: "Simson L. Garfinkel" <simsong@csail.mit.edu>
References: <249AA14A-F6D6-11D8-87E0-000A95DA91E2@csail.mit.edu>
In-Reply-To: <249AA14A-F6D6-11D8-87E0-000A95DA91E2@csail.mit.edu>
Content-Type: text/plain; charset=us-ascii; format=flowed
Content-Transfer-Encoding: 7bit
X-Spam-Status: No, hits=0.0 required=3.8 tests=none autolearn=no version=2.63
X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on pooker.samsco.org
cc: freebsd-fs@freebsd.org
Subject: Re: problems with fsck_ffs
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 26 Aug 2004 14:43:50 -0000

Simson L. Garfinkel wrote:
> Greetings. I just had a RAID crash which required some recovery with 
> fsck_ffs.
> 
> Two problems with fsck_ffs in 5.2 were discovered:
> 
> 1. There is a divide-by-0 error that happens under some conditions when 
> the contents of the superblock and the backup superblock are partially 
> damaged.
> 
>     =>Would you like a fix for this?

Of course!

> 
> 2. There is no obvious functionality to scan the whole hard-drive for 
> backup superblocks.
> 
>     => I've written such a program. If I integrate it into fsck, will 
> you take the mods?

I'd definitely like to see it.

Scott