From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752627Ab0CHH5J (ORCPT ); Mon, 8 Mar 2010 02:57:09 -0500 Received: from terminus.zytor.com ([198.137.202.10]:39195 "EHLO mail.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751612Ab0CHH5E (ORCPT ); Mon, 8 Mar 2010 02:57:04 -0500 Message-ID: <4B94AD9B.8020505@zytor.com> Date: Sun, 07 Mar 2010 23:56:11 -0800 From: "H. Peter Anvin" User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.8) Gecko/20100301 Fedora/3.0.3-1.fc12 Thunderbird/3.0.3 MIME-Version: 1.0 To: James Bottomley CC: Tejun Heo , "linux-ide@vger.kernel.org" , lkml , Daniel Taylor , Jeff Garzik , Mark Lord , tytso@mit.edu, hirofumi@mail.parknet.co.jp, Andrew Morton , Alan Cox , irtiger@gmail.com, Matthew Wilcox , aschnell@suse.de, knikanth@suse.de, jdelvare@suse.de, mkp@mkp.net Subject: Re: ATA 4 KiB sector issues. References: <4B947393.2050002@kernel.org> <1268031640.4389.11.camel@mulgrave.site> In-Reply-To: <1268031640.4389.11.camel@mulgrave.site> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 03/07/2010 11:00 PM, James Bottomley wrote: > > The 2TB size for msdos partitions is a problem independent of the 4k > sector issue. Traditional 512 byte sector drives are now available in > those sizes. It looks like we're going to have to move to a new > partitioning label to solve this. > > There's actually another barrier at 8 or 16TB, which is where a 4k > logical sector filesystem tops out using 32 bit block offsets (it's 8TB > if the fs hasn't been proof checked against sign extension problems). > The limit for the MS-DOS partition tables is 2^32 sectors. The patch that Daniel posted was for a Linux kernel internal limit that set the limit to 2 TB. -hpa