From owner-freebsd-stable@FreeBSD.ORG Thu Dec 30 00:56:49 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 55535106566C for ; Thu, 30 Dec 2010 00:56:49 +0000 (UTC) (envelope-from dan@langille.org) Received: from nyi.unixathome.org (nyi.unixathome.org [64.147.113.42]) by mx1.freebsd.org (Postfix) with ESMTP id 234158FC14 for ; Thu, 30 Dec 2010 00:56:48 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by nyi.unixathome.org (Postfix) with ESMTP id 41698508AA for ; Thu, 30 Dec 2010 00:56:48 +0000 (GMT) X-Virus-Scanned: amavisd-new at unixathome.org Received: from nyi.unixathome.org ([127.0.0.1]) by localhost (nyi.unixathome.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 2oGzpey4WQkq for ; Thu, 30 Dec 2010 00:56:48 +0000 (GMT) Received: from smtp-auth.unixathome.org (smtp-auth.unixathome.org [10.4.7.7]) (Authenticated sender: hidden) by nyi.unixathome.org (Postfix) with ESMTPSA id E7010508AC for ; Thu, 30 Dec 2010 00:56:47 +0000 (GMT) Message-ID: <4D1BD8D0.5010402@langille.org> Date: Wed, 29 Dec 2010 19:56:48 -0500 From: Dan Langille Organization: The FreeBSD Diary User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US; rv:1.9.2.13) Gecko/20101207 Thunderbird/3.1.7 MIME-Version: 1.0 To: freebsd-stable@freebsd.org References: <4D1AF388.3080107@infracaninophile.co.uk> <4D1B7431.7070808@infracaninophile.co.uk> In-Reply-To: <4D1B7431.7070808@infracaninophile.co.uk> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Subject: Re: slow ZFS on FreeBSD 8.1 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 00:56:49 -0000 On 12/29/2010 12:47 PM, Matthew Seaman wrote: > On 29/12/2010 08:57, Freek van Hemert wrote: >> The hacks sounds good until 8.2 is released however, regarding this upgrade, >> is the on-disk format the same? Can I just add the pool to a new install (of >> 8.2-RC) and expect higher performance? Or do I need to recreate the pool >> with the newer versions of the utilities? > > No -- the on-disk format is different. ZFS will run fine with the older > on-disk formats, but you won't get the full benefits without updating > them. You'll need to run both 'zpool update -a' and 'zfs update -a' -- > this is a non-reversible step, so be certain you will never need to > downgrade before doing it. Also, you *will* need to update gptzfsboot > on your drives, or you will come to a sticky end if you try and reboot. > Something like this: > > # gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ad0 > > Cheers, > > Matthew This part applies only if you're booting from ZFS drives? -- Dan Langille - http://langille.org/