From owner-freebsd-questions@FreeBSD.ORG  Mon Jun 16 13:19:45 2008
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 9C8BC10656C6
	for <freebsd-questions@freebsd.org>;
	Mon, 16 Jun 2008 13:19:45 +0000 (UTC)
	(envelope-from stanislav@corp.n9.ru)
Received: from mu-out-0910.google.com (mu-out-0910.google.com [209.85.134.188])
	by mx1.freebsd.org (Postfix) with ESMTP id 27D228FC17
	for <freebsd-questions@freebsd.org>;
	Mon, 16 Jun 2008 13:19:44 +0000 (UTC)
	(envelope-from stanislav@corp.n9.ru)
Received: by mu-out-0910.google.com with SMTP id i2so2929178mue.3
	for <freebsd-questions@freebsd.org>;
	Mon, 16 Jun 2008 06:19:43 -0700 (PDT)
Received: by 10.103.215.17 with SMTP id s17mr948281muq.61.1213622383617;
	Mon, 16 Jun 2008 06:19:43 -0700 (PDT)
Received: by 10.103.247.10 with HTTP; Mon, 16 Jun 2008 06:19:43 -0700 (PDT)
Message-ID: <319048390806160619h3390fadfyf7e1ea4b85b3c077@mail.gmail.com>
Date: Mon, 16 Jun 2008 17:19:43 +0400
From: Stanislav <stanislav@corp.n9.ru>
To: "Johan Hendriks" <Johan@double-l.nl>
In-Reply-To: <57200BF94E69E54880C9BB1AF714BBCB5DDF04@w2003s01.double-l.local>
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 7bit
Content-Disposition: inline
References: <319048390806160513i57a85b47vcf8f1b1f141e161e@mail.gmail.com>
	<57200BF94E69E54880C9BB1AF714BBCB5DDF04@w2003s01.double-l.local>
Cc: freebsd-questions@freebsd.org
Subject: Re: Move data from 3ware RAID-1 disk to MB disk
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: Mon, 16 Jun 2008 13:19:45 -0000

Dear Johan,

But hetzner support told me that data will be lost if connect disk to
motherboard controller:
"If we connect the HDD's on the Mainboard-controller, they were detected as
empty HDD, because the controller write the sectors in a other way, like the
RAID-controler!"

But I think that maybe 3ware writes their RAID table somewhere near MBR record.
So maybe I have to rewrite MBR and that disk will work on motherboard
controller?

I have backups, but this is production system, and I want to switch to
MB controller with minimal downtime.

Kind Regards

2008/6/16 Johan Hendriks <Johan@double-l.nl>:
>
>>Hi,
>
>>I have FreeBSD 7.0 with 3ware 8006-2LP RAID-1 controller hosted at
>>hetzner.de.
>
>>Now I want remove 3ware controller, and to stay with motherboard
>>controller. Is it possible to do without data loss?
>>I suggest to move one disk to motherboard controller, than boot via
>>LAN to Linux rescue, and than do "dd" from 3ware to MB disk.
>>Is it possible to do so or I will copy 3ware RAID table, and MB disk
>>will not be bootable?
>
>>Kind Regards
>
> I freebsd detect the onboard controller and the drives on it, all you
> need to do is to make sure /etc/fstab points to the right disks.
>
> Now it probberly points to /dev/twe0s1* and so on if your onboard
> controller uses ad then it needs to be changed to /dev/da0s1*
>
> Make sure you have backups!!!!!!!!!!!!!!!!!!!!!!
>
>
> Regards,
> Johan
>
>
>
>
>