Replaced scsi hard drive can no longer find scsi tape drive

Replaced scsi hard drive can no longer find scsi tape drive

Post by Chris F Clar » Sun, 14 Jul 2002 02:29:58



My Linux system had a hard disk crash just recently and I had to
replace the hard drive.  I did so and installed a "brand-new" copy of
RH 7.2 on it.  Previously it was running RH 6.2, but since I needed to
catch up a bit, it seemed like now was as good a time as any.....
The system is now up and running.

Now, I would like to restore my backup tapes on to it.  The system has
a HP SCSI DDS-3 tape drive on it, which I have used with tar to keep
backups.

The problem is Linux is no longer "seeing" my tape drive.

Quote:> tar tf /dev/st0
> tar: /dev/st0: Cannot open: No such device

So, I look for the device file, and it looks "ok"

Quote:> ls -la /dev/st0
> crw-rw-rw-  1 root   disk     9,   0 Aug 30  2001 /dev/st0

And I look to see if the device is known:
Quote:> cat /proc/scsi/scsi
> Attached devices:
> Host: scsi0 Chanell: 00 Id: 00 Lun: 00
>   Vendor: SEAGATE  Model: ST118202LW    Rev: 0006
>   Type:   Direct-Acess                  ANSI SCSI revision: 02

Ooops, no tape drive, just a disk.  

Am I missing support in the kernel:

Quote:> lsmod
> Module                    Size  Used by
> st                       26240   0  (autoclean) (unused)

...
Well, the kernel seems to know about scsi tapes.

I also checked the physical connections to the drive and they seem "ok".

I'm not certain what to check next.

Suggestions would be appreciated.

Thanks,
-Chris

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Replaced scsi hard drive can no longer find scsi tape drive

Post by M. Buchenriede » Sun, 14 Jul 2002 17:51:11



[...]

Quote:>And I look to see if the device is known:
>> cat /proc/scsi/scsi
>> Attached devices:
>> Host: scsi0 Chanell: 00 Id: 00 Lun: 00
>>   Vendor: SEAGATE  Model: ST118202LW    Rev: 0006
>>   Type:   Direct-Acess                  ANSI SCSI revision: 02
>Ooops, no tape drive, just a disk.  

[...]

Shutdown the system and take the disk out, this time checking the
correct termination settings. Your tape is probably the last device
on your SCSI chain, and therefor terminated already.

Michael
--

          Lumber Cartel Unit #456 (TINLC) & Official Netscum
    Note: If you want me to send you email, don't munge your address.

 
 
 

1. ADAPTEC 1542B DOES NOT RECOGNIZE SCSI TAPE DRIVE AND SCSI TAPE ?

This sounds like an error condition.
No. In all cases the LUN should be "0" since all of the devices that
you have contain imbedded SCSI controllers. The Physical address should be
what each device is strapped as, on the device itself.

You should also run ASPI4DOS and ASPITAPE to get the most out of the
configuration. I have a Wangtek 150 MB tape drive, but I gave up on it - it
is a useless piece of steel and wires. I now use an Archive 2150S.

I hope this helps.

--
---
Michael Burke

Sea Change Corporation
6695 Millcreek Drive, Unit 8
Mississauga, Ontario, Canada L5N 5R8
Tel: 416-542-9484  Fax: 416-542-9479
UUCP: ...!uunet!uunet.ca!seachg!burke

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