lkml.org 
[lkml]   [2010]   [Oct]   [22]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    SubjectRE: sata_mv and Highpoint RocketRAID 230x, corruption?
    Date
    From


    > -----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/
    >
    --
    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/

    \
     
     \ /
      Last update: 2010-10-23 04:33    [W:0.026 / U:0.084 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site