From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: ATA 4 KiB sector issues. Date: Tue, 16 Mar 2010 11:22:10 -0400 Message-ID: References: <4B947393.2050002@kernel.org> <201003100046.24695.arnd@arndb.de> <1158166a1003100114j6ea329fbh84bfad65dcac90bf@mail.gmail.com> <4B9EED55.10201@kernel.org> <1268720060.21384.10.camel@mulgrave.site> <4B9F2388.2030803@kernel.org> <1268745897.21384.14.camel@mulgrave.site> <4B9F8E1A.2020608@kernel.org> <1268749297.21384.15.camel@mulgrave.site> <4B9F9AAF.6080709@kernel.org> <1268751748.21384.18.camel@mulgrave.site> <4B9FA1C6.7090305@kernel.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from acsinet11.oracle.com ([141.146.126.233]:22748 "EHLO acsinet11.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933100Ab0CPPiJ (ORCPT ); Tue, 16 Mar 2010 11:38:09 -0400 In-Reply-To: <4B9FA1C6.7090305@kernel.org> (Tejun Heo's message of "Wed, 17 Mar 2010 00:20:38 +0900") Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Tejun Heo Cc: James Bottomley , Denys Vlasenko , Arnd Bergmann , "linux-ide@vger.kernel.org" , lkml , Daniel Taylor , Jeff Garzik , Mark Lord , tytso@mit.edu, "H. Peter Anvin" , hirofumi@mail.parknet.co.jp, Andrew Morton , Alan Cox , irtiger@gmail.com, Matthew Wilcox , aschnell@suse.de, knikanth@suse.de, jdelvare@suse.de >>>>> "Tejun" == Tejun Heo writes: Tejun> * Anything remotely modern (>= XP) doesn't give a hoot about Tejun> cylinder alignment. Tejun> * Anything older (<= 2000) is very likely to get confused with Tejun> custom geometry starting from the BIOS itself. For those Tejun> cases, the only thing we can do is aligning partitions to Tejun> cylinders abiding BIOS supplied geometry parameters which will Tejun> usually be 255/63. Tejun> So, using custom geometry doesn't help compatibility at all. Great reads on this topic. Might be worth linking to: http://www.win.tue.nl/~aeb/partitions/partition_types.html http://www.win.tue.nl/~aeb/linux/largedisk.html -- Martin K. Petersen Oracle Linux Engineering From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S937915Ab0CPPiL (ORCPT ); Tue, 16 Mar 2010 11:38:11 -0400 Received: from acsinet11.oracle.com ([141.146.126.233]:22748 "EHLO acsinet11.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933100Ab0CPPiJ (ORCPT ); Tue, 16 Mar 2010 11:38:09 -0400 To: Tejun Heo Cc: James Bottomley , Denys Vlasenko , Arnd Bergmann , "linux-ide\@vger.kernel.org" , lkml , Daniel Taylor , Jeff Garzik , Mark Lord , tytso@mit.edu, "H. Peter Anvin" , hirofumi@mail.parknet.co.jp, Andrew Morton , Alan Cox , irtiger@gmail.com, Matthew Wilcox , aschnell@suse.de, knikanth@suse.de, jdelvare@suse.de Subject: Re: ATA 4 KiB sector issues. From: "Martin K. Petersen" Organization: Oracle References: <4B947393.2050002@kernel.org> <201003100046.24695.arnd@arndb.de> <1158166a1003100114j6ea329fbh84bfad65dcac90bf@mail.gmail.com> <4B9EED55.10201@kernel.org> <1268720060.21384.10.camel@mulgrave.site> <4B9F2388.2030803@kernel.org> <1268745897.21384.14.camel@mulgrave.site> <4B9F8E1A.2020608@kernel.org> <1268749297.21384.15.camel@mulgrave.site> <4B9F9AAF.6080709@kernel.org> <1268751748.21384.18.camel@mulgrave.site> <4B9FA1C6.7090305@kernel.org> Date: Tue, 16 Mar 2010 11:22:10 -0400 In-Reply-To: <4B9FA1C6.7090305@kernel.org> (Tejun Heo's message of "Wed, 17 Mar 2010 00:20:38 +0900") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Source-IP: acsmt354.oracle.com [141.146.40.154] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090209.4B9FA22D.0046:SCFMA4539814,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Tejun" == Tejun Heo writes: Tejun> * Anything remotely modern (>= XP) doesn't give a hoot about Tejun> cylinder alignment. Tejun> * Anything older (<= 2000) is very likely to get confused with Tejun> custom geometry starting from the BIOS itself. For those Tejun> cases, the only thing we can do is aligning partitions to Tejun> cylinders abiding BIOS supplied geometry parameters which will Tejun> usually be 255/63. Tejun> So, using custom geometry doesn't help compatibility at all. Great reads on this topic. Might be worth linking to: http://www.win.tue.nl/~aeb/partitions/partition_types.html http://www.win.tue.nl/~aeb/linux/largedisk.html -- Martin K. Petersen Oracle Linux Engineering