From mboxrd@z Thu Jan  1 00:00:00 1970
Received: from eggs.gnu.org ([208.118.235.92]:51032)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lsching17@gmail.com>) id 1T8qlX-0003No-PB
	for qemu-devel@nongnu.org; Tue, 04 Sep 2012 06:53:56 -0400
Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)
	(envelope-from <lsching17@gmail.com>) id 1T8qlT-0000Ow-MX
	for qemu-devel@nongnu.org; Tue, 04 Sep 2012 06:53:55 -0400
Received: from mail-pb0-f45.google.com ([209.85.160.45]:58153)
	by eggs.gnu.org with esmtp (Exim 4.71)
	(envelope-from <lsching17@gmail.com>) id 1T8qlT-0000Os-EX
	for qemu-devel@nongnu.org; Tue, 04 Sep 2012 06:53:51 -0400
Received: by pbbjt11 with SMTP id jt11so9236052pbb.4
	for <qemu-devel@nongnu.org>; Tue, 04 Sep 2012 03:53:50 -0700 (PDT)
Message-ID: <5045DDB6.1010009@gmail.com>
Date: Tue, 04 Sep 2012 18:53:42 +0800
From: ching <lsching17@gmail.com>
MIME-Version: 1.0
References: <503F4F2B.905@gmail.com> <5043DC79.8040408@gmail.com>
	<50446931.1000509@redhat.com> <5045454B.1030405@gmail.com>
	<50459E71.7090106@redhat.com>
In-Reply-To: <50459E71.7090106@redhat.com>
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Subject: Re: [Qemu-devel] boot device order has no effect for virtio-scsi
	devices
List-Id: <qemu-devel.nongnu.org>
List-Unsubscribe: <https://lists.nongnu.org/mailman/options/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=unsubscribe>
List-Archive: <http://lists.nongnu.org/archive/html/qemu-devel>
List-Post: <mailto:qemu-devel@nongnu.org>
List-Help: <mailto:qemu-devel-request@nongnu.org?subject=help>
List-Subscribe: <https://lists.nongnu.org/mailman/listinfo/qemu-devel>,
	<mailto:qemu-devel-request@nongnu.org?subject=subscribe>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: qemu-devel@nongnu.org

On 09/04/2012 02:23 PM, Paolo Bonzini wrote:
> Il 04/09/2012 02:03, ching ha scritto:
>> i add boot order and the virtual machine still boot from hard disk instead of cd-rom
>>
>> <disk type='file' device='disk'>
>>       <driver name='qemu' type='raw' cache='unsafe' io='native'/>
>>       <source file='/Linux.raw_image'/>
>>       <target dev='sda' bus='scsi'/>
>>       <boot order='2'/>
>>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>>     </disk>
>>     <disk type='file' device='cdrom'>
>>       <driver name='qemu' type='raw' cache='unsafe' io='native'/>
>>       <source file='/xubuntu-12.04-desktop-amd64.iso'/>
>>       <target dev='sdb' bus='scsi'/>
>>       <readonly/>
>>       <boot order='1'/>
>>       <address type='drive' controller='0' bus='0' target='0' unit='1'/>
>>     </disk>
>>
>> here is the captured command line generated by libvirt (uuid and mac address are masked)
> Ah, ok.  libvirt for now supports only booting from LUN 0.  You can use
> multiple targets instead of multiple units.
>
> Paolo
>

it works. thanks a lot.
hope that libvirt will document it somewhere