From owner-freebsd-fs@FreeBSD.ORG Tue Nov 2 19:53:54 2010 Return-Path: Delivered-To: fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 1BFD8106564A for ; Tue, 2 Nov 2010 19:53:54 +0000 (UTC) (envelope-from julian@freebsd.org) Received: from out-0.mx.aerioconnect.net (out-0-27.mx.aerioconnect.net [216.240.47.87]) by mx1.freebsd.org (Postfix) with ESMTP id F2BA88FC1D for ; Tue, 2 Nov 2010 19:53:53 +0000 (UTC) Received: from idiom.com (postfix@mx0.idiom.com [216.240.32.160]) by out-0.mx.aerioconnect.net (8.13.8/8.13.8) with ESMTP id oA2JrpF8014423; Tue, 2 Nov 2010 12:53:51 -0700 X-Client-Authorized: MaGic Cook1e X-Client-Authorized: MaGic Cook1e Received: from julian-mac.elischer.org (h-67-100-89-137.snfccasy.static.covad.net [67.100.89.137]) by idiom.com (Postfix) with ESMTP id D073A2D601A; Tue, 2 Nov 2010 12:53:49 -0700 (PDT) Message-ID: <4CD06C4B.80100@freebsd.org> Date: Tue, 02 Nov 2010 12:53:47 -0700 From: Julian Elischer User-Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9.2.12) Gecko/20101027 Thunderbird/3.1.6 MIME-Version: 1.0 To: "Mikhail T." References: <4CD04AEC.8040607@aldan.algebra.com> <4CD051A9.7090200@freebsd.org> <4CD0660E.2000102@aldan.algebra.com> In-Reply-To: <4CD0660E.2000102@aldan.algebra.com> Content-Type: text/plain; charset=KOI8-R; format=flowed Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.67 on 216.240.47.51 Cc: fs@freebsd.org Subject: Re: Using an SSD "disk" for / X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 02 Nov 2010 19:53:54 -0000 On 11/2/10 12:27 PM, Mikhail T. wrote: > 02.11.2010 14:00, Julian Elischer ΞΑΠΙΣΑΧ(ΜΑ): >> there are trim patches but not in the OS by default as yet. > Would the patches apply to RELENG_8 today, or do they require some > 9-only feature(s)? >>> Does anyone use an SSD under FreeBSD? Which brand/model? Are you >>> happy with it? >> ... >> usually I use flash for data regions. > And? Do you use the TRIM-patches? Does performance stay high with > time -- with or without TRIM? Do you use FFS or some other > file-system? If FFS, are you relying on newfs' defaults? I'm not the person to talk to because I work fo rFusion-io (flash storage). I use our cards.. > > Thank you! Yours, > > -mi > >>> Also, what parameters should I give to newfs? SSDs' >>> characteristics seem rather different from HDDs', so it is >>> unlikely, that newfs' defaults will be optimal for an SSD... Would >>> a different filesystem (ZFS?) be a better choice, >