From owner-freebsd-fs@FreeBSD.ORG Wed Jan 4 01:35:55 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 8F0BB1065670 for ; Wed, 4 Jan 2012 01:35:55 +0000 (UTC) (envelope-from bfriesen@simple.dallas.tx.us) Received: from blade.simplesystems.org (blade.simplesystems.org [65.66.246.74]) by mx1.freebsd.org (Postfix) with ESMTP id 503448FC17 for ; Wed, 4 Jan 2012 01:35:55 +0000 (UTC) Received: from freddy.simplesystems.org (freddy.simplesystems.org [65.66.246.65]) by blade.simplesystems.org (8.14.4+Sun/8.14.4) with ESMTP id q041ZmfR015569; Tue, 3 Jan 2012 19:35:48 -0600 (CST) Date: Tue, 3 Jan 2012 19:35:48 -0600 (CST) From: Bob Friesenhahn X-X-Sender: bfriesen@freddy.simplesystems.org To: Dan Carroll In-Reply-To: <4F039470.9010405@dannysplace.net> Message-ID: References: <4F003EB8.6080006@dannysplace.net> <4F02FC42.1040103@dannysplace.net> <4F0311F2.7050209@brockmann-consult.de> <4F0312DF.8050004@brockmann-consult.de> <20120103162428.GA18661@icarus.home.lan> <4F039470.9010405@dannysplace.net> User-Agent: Alpine 2.01 (GSO 1266 2009-07-14) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.2 (blade.simplesystems.org [65.66.246.90]); Tue, 03 Jan 2012 19:35:48 -0600 (CST) Cc: freebsd-fs@freebsd.org Subject: Re: ZFS With Gpart partitions 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: Wed, 04 Jan 2012 01:35:55 -0000 On Wed, 4 Jan 2012, Dan Carroll wrote: > > Actually that does make sense. 99% of my files on this volume (office data > / media server) will be larger than 4k anyway so I guess there is nothing to > lose by aligning to a 4k boundry *and* asking ZFS to use 4k block size. Except that each file has at least two metadata blocks and these will increase to 4k in size. If the typical file size was 8K, then this would represent almost 100% waste. Bob -- Bob Friesenhahn bfriesen@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/