From owner-freebsd-stable@FreeBSD.ORG Sun Jul 4 14:27:03 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E762D106652B for ; Sun, 4 Jul 2010 14:27:03 +0000 (UTC) (envelope-from doconnor@gsoft.com.au) Received: from cain.gsoft.com.au (unknown [IPv6:2001:44b8:7c07:5581:36b8:7bff:fee0:1a08]) by mx1.freebsd.org (Postfix) with ESMTP id 0E2958FC0A for ; Sun, 4 Jul 2010 14:27:01 +0000 (UTC) Received: from ur.dons.net.au (ppp121-45-156-127.lns6.adl6.internode.on.net [121.45.156.127]) (authenticated bits=0) by cain.gsoft.com.au (8.14.4/8.14.3) with ESMTP id o64EQHTq049205 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NO); Sun, 4 Jul 2010 23:56:23 +0930 (CST) (envelope-from doconnor@gsoft.com.au) Mime-Version: 1.0 (Apple Message framework v1081) Content-Type: text/plain; charset=us-ascii From: "Daniel O'Connor" In-Reply-To: <4C309359.8000502@andric.com> Date: Sun, 4 Jul 2010 23:56:17 +0930 Content-Transfer-Encoding: quoted-printable Message-Id: <791316F7-6E16-47D7-9B6C-2881FAAC78AA@gsoft.com.au> References: <4C309359.8000502@andric.com> To: Dimitry Andric X-Mailer: Apple Mail (2.1081) X-Spam-Score: 0.163 () BAYES_00,RDNS_DYNAMIC X-Scanned-By: MIMEDefang 2.67 on 203.31.81.10 Cc: FreeBSD Stable Subject: Re: GEOM/bsdlabel regression in 8.x? X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 04 Jul 2010 14:27:04 -0000 On 04/07/2010, at 23:27, Dimitry Andric wrote: >> Then you get.. >> "bsdlabel: Class not found" >=20 > First unmount /dev/md0s1a, or the device /dev/md0s1 will be in use, = and > opening it for read/write (as bsdlabel probably does) will fail. >=20 > Alternatively, you can turn on the "footshooting" debug flag in geom: >=20 > Protection mechanisms in the geom(4) subsystem might prevent = boot0cfg > from being able to update the MBR on a mounted disk. Instructions = for > temporarily disabling these protection mechanisms can be found in = the > geom(4) manpage. Specifically, do a >=20 > sysctl kern.geom.debugflags=3D0x10 >=20 > to allow writing to the MBR, and restore it to 0 afterwards. >=20 > and try again. This may not work as expected though. :) It doesn't make a difference if you set that flag or not. (The fact you need to set debugflags to modify the MBR is a separate bug = anyway IMO) -- Daniel O'Connor software and network engineer for Genesis Software - http://www.gsoft.com.au "The nice thing about standards is that there are so many of them to choose from." -- Andrew Tanenbaum GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C