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    Subjectlibata: dma, io error messages
    Hi,

    I received a mail this morning from mdadm to notify me of a RAID
    event. A partition, sda3, was kicked from a RAID5 array. Following
    error was logged in dmesg/syslog:

    ata1: DMA timeout, stat 0x1
    ATA: abnormal status 0xD0 on port 0xD081B087
    scsi0: ERROR on channel 0, id 0, lun 0, CDB: Read (10) 00 02 05 d0 06 00 00 10 00
    Current sda: sense key Medium Error
    Additional sense: Unrecovered read error - auto reallocate failed
    end_request: I/O error, dev sda, sector 33935366
    ATA: abnormal status 0xD0 on port 0xD081B087
    Aug 6 06:03:58 hibernia last message repeated 2 times

    Can anyone shed light on the precise meaning and/or implications of
    above? Particularly the additional sense message, "auto reallocate
    failed" does this mean the drive is out of spare blocks?

    Also, the drive is extremely slow now, about 1MB/s drive transfer
    rate as reported by hdparm -T.

    regards,
    --
    Paul Jakma paul@clubi.ie paul@jakma.org Key ID: 64A2FF6A
    Fortune:
    "Consequences, Schmonsequences, as long as I'm rich."
    -- "Ali Baba Bunny" [1957, Chuck Jones]
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