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    SubjectSCSI DAT problems
    Hi!

    I upgraded the kernel from 1.3.74 to 1.3.9[57]; now I cannot access my
    DAT drive anymore. I do
    > tar cvf /dev/tape some_file
    (/dev/tape is a soft link to st0)
    The light of the DAT drive flushes about 5 times. From then on DAT drive
    sits there and do nothing :-(
    The tar process hangs in D state.
    First I thought, that the new st driver make the problem; but I compiled
    1.3.95 with the st sources from 1.3.74 (I hope I got all the files which
    belong to the st driver :-O
    But that wasn't the problem; maybe the new (3.0) aic7xxx driver is the
    problem?

    Hardware:
    Asus P55TP4N, 512kB BurstCache, Pentium-166, 128MB
    Adaptec 2940UW
    3c509
    3c590 (not used)
    2x Quantum XP34300W (4GB fastwide) (one intern, one extern)
    NEC CD-ROM DRIVE:222 (not used until now)
    HP HP35480A DAT II drive

    The DAT is on the external bus (wide->scsi2 cable :-{
    but I also tried it intern.

    Log messages:
    May 3 21:58:12 fiicmhm01 kernel: Detected scsi tape st0 at scsi0,
    channel 0, id 6, lun 0
    May 3 22:13:13 fiicmhm01 kernel: scsi : aborting command due to timeout
    : pid 14970, scsi0, channel 0, id 6, lun 0 Write (6) 00 00 28 00 00
    May 3 22:13:13 fiicmhm01 kernel: aic7xxx: (abort_reset) scb state 0x1,
    Data-Out phase, SCSISIGI = 0x0
    May 3 22:13:13 fiicmhm01 kernel: st0: Error with sense data: extra data
    not valid Current error st09:00: sense key Not Ready
    May 3 22:13:13 fiicmhm01 kernel: Additional sense indicates Logical unit
    not ready, cause not reportable
    May 3 22:28:13 fiicmhm01 kernel: scsi : aborting command due to timeout
    : pid 19970, scsi0, channel 0, id 6, lun 0 Write Filemarks 00 00 00 01 00
    May 3 22:28:13 fiicmhm01 kernel: aic7xxx: (abort_reset) scb state 0x1,
    Data-Out phase, SCSISIGI = 0x0
    May 3 22:28:13 fiicmhm01 kernel: st0: Error with sense data: extra data
    not valid Current error st09:00: sense key Not Ready
    May 3 22:28:13 fiicmhm01 kernel: Additional sense indicates Medium not
    present
    May 3 22:28:13 fiicmhm01 kernel: st0: Error on write filemark.

    The st driver is now (1.3.97) a module.
    The Medium not present is ok, because I removed the medium from the DAT
    (the tar process is still in D state)

    Thanks in advance

    Bernhard.

    ---
    +----------------------------+-------------------------------+
    | hdg@edvz.tu-graz.ac.at | bheide@iicm.tu-graz.ac.at |
    +----------------------------+-------------------------------+
    | Bernhard Heidegger, Graz University of Technology, Austria |
    +------------------------------------------------------------+
    Worst day playing is better than best day working!



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