From owner-freebsd-fs@FreeBSD.ORG Sat Jun 22 18:19:34 2013 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id A11077B6 for ; Sat, 22 Jun 2013 18:19:34 +0000 (UTC) (envelope-from freebsd@growveg.net) Received: from smtp1.servage.net (smtp1.servage.net [IPv6:2a01:3b0:1:fb:1::2001]) by mx1.freebsd.org (Postfix) with ESMTP id 699C51837 for ; Sat, 22 Jun 2013 18:19:34 +0000 (UTC) Received: from potato.growveg.org (growveg-1-pt.tunnel.tserv11.ams1.ipv6.he.net [IPv6:2001:470:1f14:3d2::2]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp1.servage.net (Postfix) with ESMTPSA id BED0B320A8 for ; Sat, 22 Jun 2013 18:22:04 +0000 (UTC) Message-ID: <51C5EAB0.7040009@growveg.net> Date: Sat, 22 Jun 2013 19:19:28 +0100 From: John User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:17.0) Gecko/20130607 Thunderbird/17.0.6 MIME-Version: 1.0 To: freebsd-fs@freebsd.org Subject: Re: Dell R710 with PERC H310. GPT issues and hardware raid or ZFS? References: <51C5B4EE.3010601@growveg.net> <81EDE2A7D67241DAB985C38662DA57DD@multiplay.co.uk> In-Reply-To: <81EDE2A7D67241DAB985C38662DA57DD@multiplay.co.uk> X-Enigmail-Version: 1.5.1 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 22 Jun 2013 18:19:34 -0000 Hello, thank you for your reply. On 22/06/2013 18:48, Steven Hartland wrote: > I see you have an dell + mfi controller, there was an important FW update > released a week or so back do ensure you have that installed or you'll > suffer from nasty IO stalls. Thats... thats what I was seeing!!! I was running a svn update for ports and svn just sat there like a piece of cheese in a state of wdrain according to top. OK so firstly I need to update the controller. After some googling I found this site https://calomel.org/zfs_raid_speed_capacity.html where they "raid0" each disk to take advantage of the controller, but it seems (so far) with my controller that once hardware raid is enabled it can't be disabled. It does not allow the opportunity to make one raid0 disk from one disk and then go to another disk to do the same. Maybe I should do it with the first one then let zfs do the remaining three. -- John