From owner-freebsd-fs@FreeBSD.ORG Mon Aug 27 22:24:18 2012 Return-Path: Delivered-To: freebsd-fs@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id F41F81065673 for ; Mon, 27 Aug 2012 22:24:17 +0000 (UTC) (envelope-from Dave.Robison@fisglobal.com) Received: from mx1.fisglobal.com (mx1.fisglobal.com [199.200.24.190]) by mx1.freebsd.org (Postfix) with ESMTP id BE20A8FC1A for ; Mon, 27 Aug 2012 22:24:17 +0000 (UTC) Received: from smtp.fisglobal.com ([10.132.206.15]) by ltcfislmsgpa04.fnfis.com (8.14.4/8.14.4) with ESMTP id q7RMOAgT028903 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT) for ; Mon, 27 Aug 2012 17:24:10 -0500 Received: from lefty.vicor.com (10.14.152.57) by smtp.fisglobal.com (10.132.206.15) with Microsoft SMTP Server (TLS) id 14.2.309.2; Mon, 27 Aug 2012 17:24:10 -0500 Message-ID: <503BF387.2080309@fisglobal.com> Date: Mon, 27 Aug 2012 15:24:07 -0700 From: "Robison, Dave" User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:10.0) Gecko/20120209 Thunderbird/10.0 MIME-Version: 1.0 To: References: <20120827221528.GA69174@server.rulingia.com> In-Reply-To: <20120827221528.GA69174@server.rulingia.com> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 8bit X-Originating-IP: [10.14.152.57] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.7.7855, 1.0.428, 0.0.0000 definitions=2012-08-27_02:2012-08-27, 2012-08-27, 1970-01-01 signatures=0 X-Mailman-Approved-At: Mon, 27 Aug 2012 23:43:56 +0000 Subject: Re: ZFS compression doesn't work X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: david.robison@fisglobal.com List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 Aug 2012 22:24:18 -0000 On 08/27/2012 15:15, Peter Jeremy wrote: > On 2012-Aug-27 23:51:06 +0200, antonin tessier wrote: >> I am trying to understand and use ZFS features. My issue is that compression doesn't work, Not sure what "compression=gzip" will give you. I believe you might be safer using "compression=gzip-6" or whichever value you want to use. gzip9 will be pretty slow if that's the default for "gzip". I use lzjb because there isn't much advantage to gzip, at least in my experience, and lzjb is fast. I did some testing and didn't find a big space savings with gzip-6 or gzip-9. % zfs get compressratio NAME PROPERTY VALUE SOURCE raid1 compressratio 1.78x - raid1/BACKUPS/BACULA compressratio 1.83x - -- Dave Robison Sales Solution Architect II FIS Banking Solutions 510/621-2089 (w) 530/518-5194 (c) 510/621-2020 (f) daver@vicor.com david.robison@fisglobal.com _____________ The information contained in this message is proprietary and/or confidential. If you are not the intended recipient, please: (i) delete the message and all copies; (ii) do not disclose, distribute or use the message in any manner; and (iii) notify the sender immediately. In addition, please be aware that any message addressed to our domain is subject to archiving and review by persons other than the intended recipient. Thank you.