From owner-freebsd-questions@FreeBSD.ORG  Wed Feb  2 16:29:05 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 5875810656A5
	for <freebsd-questions@freebsd.org>;
	Wed,  2 Feb 2011 16:29:05 +0000 (UTC)
	(envelope-from freebsd@qeng-ho.org)
Received: from fileserver.home.qeng-ho.org (blue.qeng-ho.org [217.155.128.241])
	by mx1.freebsd.org (Postfix) with ESMTP id C02CE8FC0A
	for <freebsd-questions@freebsd.org>;
	Wed,  2 Feb 2011 16:29:04 +0000 (UTC)
Received: from fileserver.home.qeng-ho.org (localhost [127.0.0.1])
	by fileserver.home.qeng-ho.org (8.14.4/8.14.4) with ESMTP id
	p12GT2xN002192
	for <freebsd-questions@freebsd.org>; Wed, 2 Feb 2011 16:29:02 GMT
	(envelope-from freebsd@qeng-ho.org)
Message-ID: <4D49864E.9070108@qeng-ho.org>
Date: Wed, 02 Feb 2011 16:29:02 +0000
From: Arthur Chance <freebsd@qeng-ho.org>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US;
	rv:1.9.1.16) Gecko/20101218 Thunderbird/3.0.11
MIME-Version: 1.0
To: FreeBSD-Questions <freebsd-questions@freebsd.org>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Subject: ZFS and switching from ad to ada disks.
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: Wed, 02 Feb 2011 16:29:05 -0000

I'm currently running 8.1-R without AHCI enabled, with a raidz zpool 
based on /dev/ad* disks, plus one system disk that's UFS2, mounted using 
partition labels. I need to enable AHCI in order to get hot pluggable 
eSata capability, and that's going to rename the disks to /dev/ada*. 
Will zfs handle that OK, or should I zpool export before the switch and 
zpool import after?