From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: ATA 4 KiB sector issues. Date: Mon, 08 Mar 2010 23:54:59 -0500 Message-ID: References: <4B947393.2050002@kernel.org> <20100308195847.GC18077@nb.net.home> <4B95B39C.70402@kernel.org> <3E0C3AE547FA504DA5E89EA5A24AC85803E2BD78@wdscexbe01.sc.wdc.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: In-Reply-To: <3E0C3AE547FA504DA5E89EA5A24AC85803E2BD78@wdscexbe01.sc.wdc.com> (Daniel Taylor's message of "Mon, 8 Mar 2010 19:38:53 -0800") Sender: linux-kernel-owner@vger.kernel.org To: Daniel Taylor Cc: Tejun Heo , Karel Zak , "Martin K. Petersen" , linux-ide@vger.kernel.org, lkml , 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, Jim Meyering List-Id: linux-ide@vger.kernel.org >>>>> "DLT" == Daniel Taylor writes: DLT> Simple reality is that XP is "forever". Drives >2TiB, which may be DLT> USB-attached, used with XP will be MBR-partitioned and use DLT> 4096-byte sectors. We need to be able to read/write those disks on DLT> Linux systems. Shouldn't be a problem as long as the DOS partition table vs. 4 KiB sectors thing is fixed. DLT> One last comment: I just tried to partition and format a >2TiB DLT> drive on fully updated Ubuntu 9.10 with GParted. I selected not to DLT> cylinder align, use GPT and ext3, and to put 1 MiB preceeding and DLT> following. libparted failed with "unable to satisfy all DLT> constraints of the partition". Using "parted", I created the DLT> partition, and then GParted was able to apply the ext3 file system. I don't think ubuntu has adopted any of the relevant updates yet. I believe the Fedora 13 Alpha is due to be released this week. That would be the best test platform because several of the people who have been actively engaged in the 4 KiB sector enablement process are Fedora developers. -- Martin K. Petersen Oracle Linux Engineering