Mr. James W. Laferriere wrote:
> 
> 
>       Hello Gerard , Please find below a dmesg from a very bad tar
>       attempt to the tape drive mentioned .  Also I tried the 8500
>       everything else same except used 8500 instead . IE:
> 
>   Vendor: EXABYTE   Model: EXB-850085QANXRC  Rev: 06X0
>   Type:   Sequential-Access                  ANSI SCSI revision: 02
> 
>       Command used :
> 
>       tar --same-owner -cpf /dev/st0 /etc/passwd /[0-9A-Za-oq-z]*
> 
>       a few minutes after the 'command processing resumed' 
>       the timeouts resumed & didn't stop , truth be told couldn't
>       be stopped with out 'reset switch' . :-{

As the tape drive is on a different controller to the disks and it is the
disks timing out I would suspect a problem with the controller/scsi bus the
disks are on, not the tape unit.

I use an almost identical exb-8500, slightly different firmware level, with
no problems. My disk is on its own controller SYM8951U and tape and CD on a
second controller SYM8751SP - similar, but not identical, set up to yours.

A typical set up that is almost certain to generate timeouts is to have disk
and tape on the same bus with the tape set up to _not_ disconnect. However
with the tape on a different controller to the disks it is possible to set
the tape to disconnect or not disconnect and there should be no timeouts.

I would check out the disk scsi bus just in case you disturbed something
when adding the tape unit.

Bye for now
Richard


> 
>                               Tia, JimL
> +-----------------------------------------------------------------------+ 
> |  James W. Laferriere  -  Network  Engineer  - [EMAIL PROTECTED] |
> |   System Techniques   -  25416  -  22nd S.  - Des-Moines, WA  98198   |
> |     Give me VMS     -or-   Give me Linux   -but-   only on AXP        |
> +-----------------------------------------------------------------------+
> 
> scsi0 : sym53c8xx/version 1.0
> scsi1 : sym53c8xx/version 1.0
> scsi : 2 hosts.
> ncr53c875J-0: command processing resumed
>   Vendor: Quantum   Model: XP31070W          Rev: L912
>   Type:   Direct-Access                      ANSI SCSI revision: 02
> Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
>   Vendor: QUANTUM   Model: FIREBALL_TM2110S  Rev: 300X
>   Type:   Direct-Access                      ANSI SCSI revision: 02
> Detected scsi disk sdb at scsi0, channel 0, id 1, lun 0
> ncr53c875J-0-<0,0>: tagged command queue depth set to 8
> ncr53c875J-0-<1,0>: tagged command queue depth set to 8
>   Vendor: EXABYTE   Model: EXB-8200          Rev: 262Z
>   Type:   Sequential-Access                  ANSI SCSI revision: 01
> Detected scsi tape st0 at scsi1, channel 0, id 4, lun 0
>   Vendor: PIONEER   Model: CD-ROM DR-124X    Rev: 1.06
>   Type:   CD-ROM                             ANSI SCSI revision: 02
> Detected scsi CD-ROM sr0 at scsi1, channel 0, id 6, lun 0
> scsi : detected 1 SCSI tape 1 SCSI cdrom 2 SCSI disks total.
> ncr53c875J-0-<0,*>: WIDE SCSI (16 bit) enabled.
> ncr53c875J-0-<0,*>: FAST-10 WIDE SCSI 20.0 MB/s (100 ns, offset 15)
> SCSI device sda: hdwr sector= 512 bytes. Sectors= 2203480 [1075 MB] [1.1 GB]
> ncr53c875J-0-<1,*>: FAST-20 SCSI 20.0 MB/s (50 ns, offset 15)
> SCSI device sdb: hdwr sector= 512 bytes. Sectors= 4124736 [2014 MB] [2.0 GB]

> ncr53c810a-1-<4,*>: SYNC transfers not supported.
> scsi : aborting command due to timeout : pid 9454, scsi0, channel 0, id 1, lun 0 
>Read (6) 14 f2 2e 02 00 
> ncr53c8xx_abort: pid=9454 serial_number=9473 serial_number_at_timeout=9473
> scsi : aborting command due to timeout : pid 9456, scsi0, channel 0, id 1, lun 0 
>Read (6) 14 f2 44 18 00 
> ncr53c8xx_abort: pid=9456 serial_number=9475 serial_number_at_timeout=9475
> scsi : aborting command due to timeout : pid 9457, scsi0, channel 0, id 1, lun 0 
>Read (6) 14 f4 e4 2c 00 
> ncr53c8xx_abort: pid=9457 serial_number=9476 serial_number_at_timeout=9476
> scsi : aborting command due to timeout : pid 9460, scsi0, channel 0, id 1, lun 0 
>Read (6) 14 f5 10 0a 00 
> ncr53c8xx_abort: pid=9460 serial_number=9479 serial_number_at_timeout=9479
> scsi : aborting command due to timeout : pid 9461, scsi0, channel 0, id 0, lun 0 
>Write (6) 04 eb 98 06 00 
> ncr53c8xx_abort: pid=9461 serial_number=9480 serial_number_at_timeout=9480
> SCSI host 0 abort (pid 9456) timed out - resetting
> SCSI bus is being reset for host 0 channel 0.
> ncr53c8xx_reset: pid=9456 reset_flags=2 serial_number=9475 
>serial_number_at_timeout=9475
> ncr53c875J-0: resetting, command processing suspended for 2 seconds
> ncr53c875J-0: restart (scsi reset).
> ncr53c875J-0: enabling clock multiplier
> ncr53c875J-0: Downloading SCSI SCRIPTS.
> ncr53c875J-0: command processing resumed
> ncr53c875J-0-<1,*>: FAST-20 SCSI 20.0 MB/s (50 ns, offset 15)
> ncr53c875J-0-<0,*>: WIDE SCSI (16 bit) enabled.
> ncr53c875J-0-<0,*>: FAST-10 WIDE SCSI 20.0 MB/s (100 ns, offset 15)
> 
> 
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-- 
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