From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755495Ab0JWCae (ORCPT ); Fri, 22 Oct 2010 22:30:34 -0400 Received: from wdscspam1.wdc.com ([129.253.170.130]:65285 "EHLO wdscspam1.wdc.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753638Ab0JWCad convert rfc822-to-8bit (ORCPT ); Fri, 22 Oct 2010 22:30:33 -0400 X-Greylist: delayed 564 seconds by postgrey-1.27 at vger.kernel.org; Fri, 22 Oct 2010 22:30:33 EDT X-IronPort-AV: E=Sophos;i="4.58,226,1286175600"; d="scan'208";a="149293356" X-MimeOLE: Produced By Microsoft Exchange V6.5 Content-class: urn:content-classes:message MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8BIT Subject: RE: sata_mv and Highpoint RocketRAID 230x, corruption? Date: Fri, 22 Oct 2010 19:21:08 -0700 Message-ID: <25B374CC0D9DFB4698BB331F82CD0CF20D5FFC@wdscexbe08.sc.wdc.com> X-MS-Has-Attach: X-MS-TNEF-Correlator: Thread-Topic: sata_mv and Highpoint RocketRAID 230x, corruption? Thread-Index: ActyVgkk+uFWLgUOSYWbwXqnJQibBAAAtDIg References: <4CC24186.1040001@teksavvy.com> From: "Daniel Taylor" To: X-OriginalArrivalTime: 23 Oct 2010 02:21:09.0223 (UTC) FILETIME=[F4571F70:01CB7258] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > -----Original Message----- > From: linux-kernel-owner@vger.kernel.org > [mailto:linux-kernel-owner@vger.kernel.org] On Behalf Of Mark Lord > Sent: Friday, October 22, 2010 7:00 PM > To: Mathias Burén > Cc: linux-kernel@vger.kernel.org > Subject: Re: sata_mv and Highpoint RocketRAID 230x, corruption? > > On 10-10-20 04:03 PM, Mathias Burén wrote: > .. > > I'm currently not using the BIOS of the raid controller for anything > > else then staggered disk spinup. The HDD partitions start at sector > > 2048 (to get a 1MB alignment since they're 4k sector > drives, WD20EARS) > > and end at the last sector. > > What I'm worried about is the corruption mentioned in dmesg, is this > > explained somewhere in more detail? Google didn't reveal > much. Am I in > > danger? > > Yes. Just repartition the drives to avoid the final 2GB of > each drive, > and then you'll be safe. > > The RocketRaid BIOS that I examined here a couple of years ago, > liked to write "metadata" over top of whatever was in certain sectors > near the end of the drive. EVEN FOR NON-RAID DRIVES. > > I think it was the last even (power-of-two) multiple of 1GB > or something, > so if you leave the final 2GB untouched, you're guaranteed to > avoid it. > > Thus the recommendation. What happens to the backup GPT at the end of the disk? > > Cheers > -- > To unsubscribe from this list: send the line "unsubscribe > linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ >