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SCSI DAT not recognized

daemon@ATHENA.MIT.EDU (kanaan)
Sat Jun 21 22:57:00 1997

Date: 	Sat, 21 Jun 1997 23:56:31 -0300
From: kanaan <kanaan@pcastro7.if.ufrgs.br>
To: linux-scsi@vger.rutgers.edu

Hi folks,

I recently installed RedHat 2.0.27 and was having trouble with my SCSI
controller. I was told to install the Future Domain module and all is
ok now.  Well, almost.  The SCSI disk is behaving and I am
using it just fine.  

Now, the SCSI tape is a problem.  Actually this looks more like a DAT
problem than a SCSI problem.  It may not be suited for this mailing
list, sorry if that is the case.  We had this DAT unit connected to a
Sparc5 before and it never worked (I'm told it did work under Windows
95).  querying the unit:

********************************* (on a sparc5 (sunOS4.1.4)) *********


mt -f /dev/rst8 status

marte|~> mt -f /dev/rst0 status
Exabyte EXB-8200 8mm tape drive:
   sense key(0x0)= no sense   residual= 0   retries= 0
   file no= 0   block no= 0
marte|~>

Trying to access it:

marte|~> tar -tvf /dev/rst0
tar: read error: Invalid argument
marte|~> tar -tvf /dev/rst8
tar: read error: Invalid argument

**********************************************************************

Now in my Linux machine:


pcastro7>mt -f /dev/st0 status
SCSI 2 tape drive:
File number=0, block number=0, partition=0.
Tape block size 0 bytes. Density code 0x0 (default).
Soft error count since last status=0
General status bits on (40010000):
 BOT IM_REP_EN

other mt commands such as rewind, rewindoffl work fine.

[root@pcastro7 kanaan]# tar -tvf /dev/st0
tar: Read error on /dev/st0: I/O error
tar: At beginning of tape, quitting now


*************************************************************************

At boot time I get the following messages:

Jun 20 16:04:50 pcastro7 kernel: scsi0 <fdomain>: TMC-36C70 (PCI bus) chip at 0x6200 irq 9
Jun 20 16:04:50 pcastro7 kernel: scsi0 : Future Domain TMC-16x0 SCSI driver, version 5.44
Jun 20 16:04:50 pcastro7 kernel: scsi : 1 host.
Jun 20 16:04:50 pcastro7 kernel:   Vendor: SONY      Model: SDT-5000          Rev: 3.26
Jun 20 16:04:50 pcastro7 kernel:   Type:   Sequential-Access                  ANSI SCSI revision: 02
Jun 20 16:04:50 pcastro7 kernel:   Vendor: SEAGATE   Model: ST15230N          Rev: 0298
Jun 20 16:04:50 pcastro7 kernel:   Type:   Direct-Access                      ANSI SCSI revision: 02
Jun 20 16:04:50 pcastro7 kernel: Detected scsi disk sda at scsi0, channel 0, id 5, lun 0
Jun 20 16:04:50 pcastro7 kernel: scsi : detected 1 SCSI disk total.
Jun 20 16:04:50 pcastro7 kernel: SCSI device sda: hdwr sector= 512 bytes. Sectors= 8386733 [4095 MB] [4.1 GB]
Jun 20 16:04:50 pcastro7 kernel: Partition check:
Jun 20 16:04:50 pcastro7 kernel:  sda: sda1 sda2 sda4

...

Jun 20 16:04:50 pcastro7 kernel: Detected scsi tape st0 at scsi0, channel 0, id 4, lun 0


Any clue?

Thanks,

Antonio 

-----------------------------------------------------------------------

Antonio Kanaan
Astronomy Postdoc
Instituto de Fisica - Universidade Federal do Rio Grande do Sul
kanaan@if.ufrgs.br
phone = 55.51.3166451
fax   = 55.51.3191762

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