From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756585Ab0JWB7k (ORCPT ); Fri, 22 Oct 2010 21:59:40 -0400 Received: from ironport2-out.teksavvy.com ([206.248.154.181]:24182 "EHLO ironport2-out.pppoe.ca" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1756182Ab0JWB7i (ORCPT ); Fri, 22 Oct 2010 21:59:38 -0400 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: ApIBAMvdwUxLd/sX/2dsb2JhbAAHgxjKWpF3gSKDMnQEj08 X-IronPort-AV: E=Sophos;i="4.58,226,1286164800"; d="scan'208";a="80464326" Message-ID: <4CC24186.1040001@teksavvy.com> Date: Fri, 22 Oct 2010 21:59:34 -0400 From: Mark Lord User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.11) Gecko/20101013 Thunderbird/3.1.5 MIME-Version: 1.0 To: =?UTF-8?B?TWF0aGlhcyBCdXLDqW4=?= CC: linux-kernel@vger.kernel.org Subject: Re: sata_mv and Highpoint RocketRAID 230x, corruption? References: In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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. Cheers