From owner-freebsd-current@FreeBSD.ORG  Thu Oct 15 12:28:20 2009
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 24F9D1065679;
	Thu, 15 Oct 2009 12:28:20 +0000 (UTC)
	(envelope-from valin@buchlovice.org)
Received: from smtp-sfn.sitkom.cz (smtp-sfn.sitkom.cz [88.146.175.4])
	by mx1.freebsd.org (Postfix) with ESMTP id DD0148FC0C;
	Thu, 15 Oct 2009 12:28:19 +0000 (UTC)
Received: from osiris.buchlovice.sfn (valin-osiris-lan.brestek.sfn [10.8.20.3])
	by smtp-sfn.sitkom.cz (Postfix) with ESMTP id 96F851FA69E;
	Thu, 15 Oct 2009 14:08:55 +0200 (CEST)
Message-ID: <4AD710D6.70404@buchlovice.org>
Date: Thu, 15 Oct 2009 14:08:54 +0200
From: =?UTF-8?B?UmFkZWsgVmFsw6HFoWVr?= <valin@buchlovice.org>
User-Agent: Thunderbird 2.0.0.23 (X11/20091015)
MIME-Version: 1.0
To: freebsd-fs@freebsd.org
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Cc: freebsd-current@freebsd.org
Subject: GPT boot with ZFS RAIDZ "ZFS: i/o error - all block copies
	unavailable"
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 15 Oct 2009 12:28:20 -0000

Hi,

I want to ask if there is something new in adding support to 
gptzfsboot/zfsboot for reading gang-blocks?

 From Sun's docs:

Gang blocks

When there is not enough contiguous space to write a complete block, the ZIO
pipeline will break the I/O up into smaller 'gang blocks' which can later be
assembled transparently to appear as complete blocks.

Everything works fine for me, until I rewrite kernel/world after system 
upgrade to latest one (releng_8). After this am I no longer able to boot 
from zfs raidz1 pool with following messages:

 >/ ZFS: i/o error - all block copies unavailable
/>/ ZFS: can't read MOS
/>/ ZFS: unexpected object set type lld
/>/ ZFS: unexpected object set type lld
/>/
/>/ FreeBSD/i386 boot
/>/ Default: z:/boot/kernel/kernel
/>/ boot:
/>/ ZFS: unexpected object set type lld
/>/
/>/ FreeBSD/i386 boot
/>/ Default: tank:/boot/kernel/kernel
/>/ boot:
//
/I presume it's the same issue as talked in june-2009 current mailing 
list 
http://lists.freebsd.org/pipermail/freebsd-current/2009-June/008589.html

Any success in that matter?

Thnx for answer.

vaLin