From owner-freebsd-stable@FreeBSD.ORG Thu Dec 30 11:40:05 2010 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id BE1F8106566C for ; Thu, 30 Dec 2010 11:40:05 +0000 (UTC) (envelope-from ml@my.gd) Received: from mail-ww0-f50.google.com (mail-ww0-f50.google.com [74.125.82.50]) by mx1.freebsd.org (Postfix) with ESMTP id 587F08FC0C for ; Thu, 30 Dec 2010 11:40:02 +0000 (UTC) Received: by wwf26 with SMTP id 26so10650495wwf.31 for ; Thu, 30 Dec 2010 03:40:02 -0800 (PST) Received: by 10.227.162.194 with SMTP id w2mr9579514wbx.203.1293709202222; Thu, 30 Dec 2010 03:40:02 -0800 (PST) Received: from dfleuriot.local ([83.167.62.196]) by mx.google.com with ESMTPS id m10sm10886306wbc.22.2010.12.30.03.40.00 (version=SSLv3 cipher=RC4-MD5); Thu, 30 Dec 2010 03:40:01 -0800 (PST) Message-ID: <4D1C6F90.3080206@my.gd> Date: Thu, 30 Dec 2010 12:40:00 +0100 From: Damien Fleuriot User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: freebsd-stable@freebsd.org Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: ZFS - moving from a zraid1 to zraid2 pool with 1.5tb disks X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 Dec 2010 11:40:05 -0000 Hello list, I currently have a ZFS zraid1 with 4x 1.5TB drives. The system is a zfs-only FreeBSD 8.1 with zfs version 14. I am concerned that in the event a drive fails, I won't be able to repair the disks in time before another actually fails. I wish to reinstall the OS on a dedicated drive (possibly SSD, doesn't matter, likely UFS) and dedicate the 1.5tb disks to storage only. I have ordered 5x new drives and would like to create a new zraid2 mirrored pool. Then I plan on moving data from pool1 to pool2, removing drives from pool1 and adding them to pool2. My questions are as follows: With a total of 9x 1.5TB drives, should I be using zraid3 instead of zraid2 ? I will not be able to add any more drives so unnecessary parity drives = less storage room. What are the steps for properly removing my drives from the zraid1 pool and inserting them in the zraid2 pool ? Regards, dfl