From owner-freebsd-questions@FreeBSD.ORG  Thu Apr 21 10:52:49 2011
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 800AC1065670
	for <freebsd-questions@freebsd.org>;
	Thu, 21 Apr 2011 10:52:49 +0000 (UTC)
	(envelope-from wolfgang@riegler.homeip.net)
Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.17.9])
	by mx1.freebsd.org (Postfix) with ESMTP id 0C7A68FC15
	for <freebsd-questions@freebsd.org>;
	Thu, 21 Apr 2011 10:52:48 +0000 (UTC)
Received: from mail.cbt-l.de ([212.185.49.146])
	by mrelayeu.kundenserver.de (node=mreu3) with ESMTP (Nemesis)
	id 0LaeOS-1PXDxz1sBk-00kOXw; Thu, 21 Apr 2011 12:40:12 +0200
Received: (qmail 31219 invoked by uid 1009); 21 Apr 2011 10:40:10 -0000
Received: from 192.168.40.62 by mail.cbt-l.de (envelope-from
	<wolfgang@riegler.homeip.net>,
	uid 1008) with qmail-scanner-1.25-st-qms 
	(clamdscan: 0.97/12658. spamassassin: 3.3.0. perlscan: 1.25-st-qms. 
	Clear:RC:1(192.168.40.62):. 
	Processed in 0.038834 secs); 21 Apr 2011 10:40:10 -0000
X-Antivirus-CBTL-Mail-From: wolfgang@riegler.homeip.net via mail.cbt-l.de
X-Antivirus-CBTL: 1.25-st-qms (Clear:RC:1(192.168.40.62):. Processed in
	0.038834 secs Process 31213)
Received: from wolfgang.cbt-l.de (HELO wolfgang.localnet)
	(w.riegler@cbt-l.de@192.168.40.62)
	by mail.cbt-l.de with SMTP; 21 Apr 2011 10:40:10 -0000
From: Wolfgang Riegler <wolfgang@riegler.homeip.net>
To: FreeBSD Questions Mailing List <freebsd-questions@freebsd.org>
Date: Thu, 21 Apr 2011 12:40:14 +0200
User-Agent: KMail/1.13.5 (Linux/2.6.37-gentoo-r4sepp1; KDE/4.4.5; x86_64; ; )
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="utf-8"
Content-Transfer-Encoding: 7bit
Message-Id: <201104211240.14357.wolfgang@riegler.homeip.net>
X-Provags-ID: V02:K0:5u0NFQVtHa5WZh+qgygnrNFR1d/sd7jy0hI3i1itSwz
	Zq0ZjkXX8OxjC9P4Q7VVwLUUt44T5mAacHtpX+rxBxkliaV6mB
	RhMDp34H0mcWn3/Z/HlceWSUUnBV2cslVq9hotJt0otoB4uZQ9
	VpCBa+YjwCNfJi45WYig6oy4hpJjmWzdvZ5Wkd0E+zhMDmgdtC
	YKUaGLJEwf4H5G9AdAN4xOebYMf2YzRSOnutZHZeXE=
Cc: freebsd-fs@freebsd.org
Subject: Cannot boot from ZFS raidz1
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 21 Apr 2011 10:52:49 -0000

Hi,

I have used this setup guide (http://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/RAIDZ1) line by line with the 8.2-RELEASE DVD for amd64 to install a VirtualBox guest for testing.
The only difference to the setup guide: I use a SAS controler, so devicename is da0, da1, da2 instead of ad0, etc. I tried it with a SATA controler as well, but no differences.

After reboot, I get the following error from the loader:
ZFS: i/o error - all block copies unavailable
ZFS: can't read MOS object directory
Can't find root filesystem - giving up
ZFS: unexpected object set type 0
ZFS: unexpected object set type 0

FreeBSD/x86 boot
Default: zroot:/boot/kernel/kernel
boot:
ZFS: unexpected object set type 0

FreeBSD/x86 boot
Default: zroot:/boot/kernel/kernel
boot:


I hope someone can give an hint, what's going wrong here.

Thanks in advance

Wolfgang