From owner-freebsd-geom@FreeBSD.ORG Wed Jul 24 14:19:48 2013 Return-Path: Delivered-To: freebsd-geom@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id BDD3670F for ; Wed, 24 Jul 2013 14:19:48 +0000 (UTC) (envelope-from kpielorz_lst@tdx.co.uk) Received: from mail.tdx.com (mail.tdx.com [62.13.128.18]) by mx1.freebsd.org (Postfix) with ESMTP id 89B6D2221 for ; Wed, 24 Jul 2013 14:19:48 +0000 (UTC) Received: from Mail-PC.tdx.co.uk (storm.tdx.co.uk [62.13.130.251]) (authenticated bits=0) by mail.tdx.com (8.14.3/8.14.3/) with ESMTP id r6OEJewQ029737 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 24 Jul 2013 15:19:41 +0100 (BST) Date: Wed, 24 Jul 2013 15:19:40 +0100 From: Karl Pielorz To: Steven Hartland , freebsd-geom@FreeBSD.org Subject: Re: TRIM or no TRIM? Message-ID: <43FCB2933BDA7D36CA1719CD@Mail-PC.tdx.co.uk> In-Reply-To: <066EB1F973D44AAC951D4D47C577266F@multiplay.co.uk> References: <512DC7C043034F891F1012DA@Mail-PC.tdx.co.uk> <066EB1F973D44AAC951D4D47C577266F@multiplay.co.uk> X-Mailer: Mulberry/4.0.8 (Win32) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline X-BeenThere: freebsd-geom@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: GEOM-specific discussions and implementations List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Jul 2013 14:19:48 -0000 --On 24 July 2013 12:10 +0100 Steven Hartland wrote: > I'm guessing that the software raid your using doesn't support TRIM then So the question has to change to 'Does GEOM GRAID support, or allow TRIM' :) > Have you considered switching to ZFS based install, which does support > TRIM in 9.2, 9/stable and 8/stable? These are MySQL hosts - until we've got some experience running MySQL on top of ZFS we'll stick with UFS for now - nice idea though (and we already have other boxes using ZFS). -Karl