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Date: Fri, 22 Oct 2010 21:59:34 -0400 From: Mark Lord <kernel@...savvy.com> To: Mathias Burén <mathias.buren@...il.com> CC: linux-kernel@...r.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. Cheers -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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