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    SubjectRe: SATA repeated failure (command 0x35 timeout, status 0xd8)
    [cc'ing linux-ide]

    Molle Bestefich wrote:
    > Hi,
    >
    > I have a box with the following hardware/software configuration.
    >
    > # uname -r
    > 2.6.16.5
    >
    > # lspci | grep SATA
    > 00:0b.0 CMD Technology Inc Silicon Image SiI 3112 SATARaid Controller
    > (rev 02)
    > 00:0d.0 CMD Technology Inc Silicon Image SiI 3112 SATARaid Controller
    > (rev 02)
    > 00:0f.0 CMD Technology Inc Silicon Image SiI 3112 SATARaid Controller
    > (rev 02)
    >
    > # cd /sys/bus/scsi/devices; for dev in `ls -1`; do name=`ls -1d
    > $dev/block*`; disk=`cat $dev/model`; echo "$name: $disk"; done
    > 0:0:0:0/block:sda: Maxtor 6Y250M0
    > 1:0:0:0/block:sdb: Maxtor 6Y200M0
    > 2:0:0:0/block:sdc: Maxtor 6Y200M0
    > 3:0:0:0/block:sdd: Maxtor 6Y200M0
    > 4:0:0:0/block:sde: Maxtor 6Y200M0
    > 5:0:0:0/block:sdf: Maxtor 6Y200M0
    >
    > It can operate normally for the longest time, but all of a sudden the
    > following happens.
    >
    > # dmesg
    > ata2: command 0x35 timeout, stat 0xd8 host_stat 0x1
    > ata2: translated ATA stat/err 0xd8/00 to SCSI SK/ASC/ASCQ 0xb/47/00
    > ata2: status=0xd8 { Busy }
    > sd 1:0:0:0: SCSI error: return code = 0x8000002
    > sdb: Current: sense key: Aborted Command
    > Additional sense: Scsi parity error
    > end_request: I/O error, dev sdb, sector 323729879
    > ATA: abnormal status 0xD8 on port 0xD095E0C7
    > ATA: abnormal status 0xD8 on port 0xD095E0C7
    > ATA: abnormal status 0xD8 on port 0xD095E0C7
    > --
    > ata2: command 0x35 timeout, stat 0xd8 host_stat 0x1
    > ata2: translated ATA stat/err 0xd8/00 to SCSI SK/ASC/ASCQ 0xb/47/00
    > ata2: status=0xd8 { Busy }
    > sd 1:0:0:0: SCSI error: return code = 0x8000002
    > sdb: Current: sense key: Aborted Command
    > Additional sense: Scsi parity error
    > end_request: I/O error, dev sdb, sector 323729887
    > ATA: abnormal status 0xD8 on port 0xD095E0C7
    > ATA: abnormal status 0xD8 on port 0xD095E0C7
    > ATA: abnormal status 0xD8 on port 0xD095E0C7
    >
    > [ .. et cetera, always with sector += 8 .. ]
    >
    > This usually happens during a write to the RAID.
    >
    > Funny thing is, it always happens to /dev/sdb.
    > It's happened 100s of times, but not once to any other device than
    > /dev/sdb.
    >
    > Resetting and running Maxtor PowerMax reports that the drive has no
    > hardware problems whatsoever.
    >
    > I can't think of anything useful, except that /dev/sdb sits on the
    > same controller card as /dev/sda, which is a slightly different disk
    > than the rest of the bunch.
    >
    > What can/should I do?

    Please give a shot at 2.6.18. It contains improved EH which 1. should
    be able to recover from such conditions 2. gives more detailed
    information about the nature of errors.

    --
    tejun
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