From owner-cvs-all@FreeBSD.ORG  Sun Dec 12 14:32:16 2004
Return-Path: <owner-cvs-all@FreeBSD.ORG>
Delivered-To: cvs-all@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 0F34416A4CE; Sun, 12 Dec 2004 14:32:16 +0000 (GMT)
Received: from mail.chesapeake.net (chesapeake.net [208.142.252.6])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 9103143D78; Sun, 12 Dec 2004 14:32:15 +0000 (GMT)
	(envelope-from jroberson@chesapeake.net)
Received: from mail.chesapeake.net (localhost [127.0.0.1])
	by mail.chesapeake.net (8.12.10/8.12.10) with ESMTP id iBCEWEDB010777;
	Sun, 12 Dec 2004 09:32:14 -0500 (EST)
	(envelope-from jroberson@chesapeake.net)
Received: from localhost (jroberson@localhost)iBCEWEda010771;
	Sun, 12 Dec 2004 09:32:14 -0500 (EST)
	(envelope-from jroberson@chesapeake.net)
X-Authentication-Warning: mail.chesapeake.net: jroberson owned process doing
	-bs
Date: Sun, 12 Dec 2004 09:32:13 -0500 (EST)
From: Jeff Roberson <jroberson@chesapeake.net>
To: Poul-Henning Kamp <phk@FreeBSD.org>
In-Reply-To: <200412121419.iBCEJBg4048788@repoman.freebsd.org>
Message-ID: <20041212093155.V9536@mail.chesapeake.net>
References: <200412121419.iBCEJBg4048788@repoman.freebsd.org>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
cc: cvs-src@FreeBSD.org
cc: src-committers@FreeBSD.org
cc: cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/ufs/ffs ffs_vfsops.c
X-BeenThere: cvs-all@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: CVS commit messages for the entire tree <cvs-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/cvs-all>
List-Post: <mailto:cvs-all@freebsd.org>
List-Help: <mailto:cvs-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/cvs-all>,
	<mailto:cvs-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 12 Dec 2004 14:32:16 -0000

Probably should push this back into RELENG_5 at some point.

On Sun, 12 Dec 2004, Poul-Henning Kamp wrote:

> phk         2004-12-12 14:19:11 UTC
>
>   FreeBSD src repository
>
>   Modified files:
>     sys/ufs/ffs          ffs_vfsops.c
>   Log:
>   With the introduction of UFS2 we started looking for superblocks in
>   four different locations on a prospective filesystem.
>
>   If we found none, we forgot to invalidate the four buffers, thus the
>   following sequence would fails:
>
>           (md0 = blank disk)
>           mount /dev/md0 /mnt
>           (fails, no superblocks)
>           newfs /dev/md0
>           (writes using physio which does not go through buffercache).
>           mount /dev/md0 /mnt
>           (still fails, the four cached buffers still contain no superblocks)
>
>   Found by:       ru
>
>   Revision  Changes    Path
>   1.263     +1 -0      src/sys/ufs/ffs/ffs_vfsops.c
>