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    SubjectRe: INFO: task jbd2/dm-0-8:3993 blocked for more than 120 seconds
    Date
    On 2011-08-17, at 7:31 AM, Thomas Backlund <tmb@mageia.org> wrote:
    >
    > One of our buildnodes, a 8-core Supermicro X7DA8 system,
    > and a WDC WD1002FAEX-0 sata disk hits the "blocked for more than 120 seconds" several times, and ends up resetting the ata bus.
    >
    > The disk does not report any errors with smart, and we have the same model in a 24-core Supermicro X8DTN, and it does not show this problem.
    >
    > ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x6 frozen
    > ata3.00: failed command: FLUSH CACHE EXT
    > ata3.00: cmd ea/00:00:00:00:00/00:00:00:00:00/a0 tag 0
    > res 40/00:00:01:4f:c2/00:00:00:00:00/00 Emask 0x4 (timeout)
    > ata3.00: status: { DRDY }
    > ata3: soft resetting link
    > ata3.00: configured for UDMA/133
    > ata3.00: retrying FLUSH 0xea Emask 0x4
    > ata3: EH complete

    This is a problem with your disk hardware.

    Cheers, Andreas

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