From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758689AbZBZDYl (ORCPT ); Wed, 25 Feb 2009 22:24:41 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753059AbZBZDYb (ORCPT ); Wed, 25 Feb 2009 22:24:31 -0500 Received: from rcsinet13.oracle.com ([148.87.113.125]:51089 "EHLO rgminet13.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750828AbZBZDYb (ORCPT ); Wed, 25 Feb 2009 22:24:31 -0500 To: Matthew Wilcox Cc: Theodore Tso , "Martin K. Petersen" , "H. Peter Anvin" , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org, sandeen@redhat.com Subject: Re: ATA support for 4k sector size From: "Martin K. Petersen" Organization: Oracle References: <1235600698-6446-1-git-send-email-matthew@wil.cx> <49A5CBF7.9000501@zytor.com> <20090226025043.GJ1363@mit.edu> <20090226030735.GA16891@parisc-linux.org> Date: Wed, 25 Feb 2009 22:23:25 -0500 In-Reply-To: <20090226030735.GA16891@parisc-linux.org> (Matthew Wilcox's message of "Wed\, 25 Feb 2009 20\:07\:35 -0700") Message-ID: User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Source-IP: acsmt705.oracle.com [141.146.40.83] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090201.49A60B31.01AF:SCFSTAT928724,ss=1,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Matthew" == Matthew Wilcox writes: Matthew> Lowest aligned logical block address=0 Matthew> This disagrees with Martin's assertion. The original roadmap was to transition to 4KB sectors in 2006, coinciding with the Vista release. Given how long this has taken (we're now talking ~2011 for GA) it may very well be that the alignment knobs will be unused because everybody will be using Vista or 7 by then. That doesn't change the RAID array alignment problem, however. And we need to prepare our partitioning tools to align correctly regardless. -- Martin K. Petersen Oracle Linux Engineering