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    SubjectRe: MD/RAID: what's wrong with sector 1953519935?
    Andrei Tanas wrote:
    > On Wed, 26 Aug 2009 11:39:38 -0400, Ric Wheeler <rwheeler@redhat.com>
    > wrote:
    >> On 08/26/2009 10:46 AM, Andrei Tanas wrote:
    >>> On Wed, 26 Aug 2009 06:34:14 -0400, Ric Wheeler<rwheeler@redhat.com>
    >>> wrote:
    >>>> On 08/25/2009 11:45 PM, Andrei Tanas wrote:
    >>>>>>>> I would suggest that Andrei might try to write and clear the IO
    >>>>>> error
    >>>>>>>> at that
    >>>>>>>> offset. You can use Mark Lord's hdparm to clear a specific sector
    ..
    > [90318.370625] end_request: I/O error, dev sdb, sector 1953519935
    ..

    I suggest you try this:

    hdparm --read-sector 1953519935 /dev/sdb

    If that succeeds, then the sector is good at the drive.
    But *If* it fails, then you could check the syslog to ensure
    that it didn't fail for some weird reason, and then *fix* it:

    hdparm --write-sector 1953519935 /dev/sdb

    This is very different from how 'dd' does writes.

    Cheers


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