From owner-freebsd-geom@FreeBSD.ORG  Thu Sep 17 20:32:14 2009
Return-Path: <owner-freebsd-geom@FreeBSD.ORG>
Delivered-To: freebsd-geom@hub.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 941C0106568F;
	Thu, 17 Sep 2009 20:32:14 +0000 (UTC)
	(envelope-from marcel@FreeBSD.org)
Received: from freefall.freebsd.org (freefall.freebsd.org
	[IPv6:2001:4f8:fff6::28])
	by mx1.freebsd.org (Postfix) with ESMTP id 856328FC1D;
	Thu, 17 Sep 2009 20:32:14 +0000 (UTC)
Received: from freefall.freebsd.org (marcel@localhost [127.0.0.1])
	by freefall.freebsd.org (8.14.3/8.14.3) with ESMTP id n8HKWEJc021159;
	Thu, 17 Sep 2009 20:32:14 GMT
	(envelope-from marcel@freefall.freebsd.org)
Received: (from marcel@localhost)
	by freefall.freebsd.org (8.14.3/8.14.3/Submit) id n8HKWEUG021155;
	Thu, 17 Sep 2009 20:32:14 GMT (envelope-from marcel)
Date: Thu, 17 Sep 2009 20:32:14 GMT
Message-Id: <200909172032.n8HKWEUG021155@freefall.freebsd.org>
To: shurd@sasktel.net, marcel@FreeBSD.org, freebsd-geom@FreeBSD.org
From: marcel@FreeBSD.org
Cc: 
Subject: Re: kern/138891: [geom] GEOM_PART_* fails with sliced gstripe
X-BeenThere: freebsd-geom@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: GEOM-specific discussions and implementations
	<freebsd-geom.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-geom>
List-Post: <mailto:freebsd-geom@freebsd.org>
List-Help: <mailto:freebsd-geom-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-geom>,
	<mailto:freebsd-geom-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 17 Sep 2009 20:32:14 -0000

Synopsis: [geom] GEOM_PART_* fails with sliced gstripe

State-Changed-From-To: open->closed
State-Changed-By: marcel
State-Changed-When: Thu Sep 17 20:25:11 UTC 2009
State-Changed-Why: 
Your disk partitioning is invalid. You cannot have both a MBR and
a BSD disk label in the same place and independently of each other.
    ace# fdisk /dev/stripe/raid0
    ace# bsdlabel /dev/stripe/raid0
If you look closely, FreeBSD 7.2 will use the MBR on /dev/stripe/raid0
and the BSD disklabel on /dev/stripe/raid0s4. However, since a BSD
disklabel also embeds a MBR, FreeBSD 8.0 will correctly prefer the
BSD disklabel on /dev/stripe/raid0. However, the BSD disk label is
not the one that should be used.
Fix the problem by wiping out the second sector on the disk.
BTW: the problem is caused by creating a dangerously dedicated
installation. It's known to be broken and should not be used.
FYI,

http://www.freebsd.org/cgi/query-pr.cgi?pr=138891