HELP: Dump problem with HP 35480A DAT Streamer

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2 total messages Started by Evstathios Marinos Fri, 08 Jan 1993 10:09

#1523

Author: Evstathios Marinos
Date: Fri, 08 Jan 1993 10:09

26 lines
1460 bytes

Hi,

I've got problems with the DAT Streamer HP 35480A running at NeXT machines when  
working with dump/restore.

Dumping files to the streamer workes fine, but performing a restore from a dump  
produces a strange behaviour. Some times it works fine, the next time I get  
following error:

ST:CMD=0x8 SR_IO_STATUS=2H
Sense Key=0x0
Sense Code=0x0
Tape/Disk Read Error: I/O Error

I tried the streamer with various NeXT machines, Cube's, Mono's, Turbo Color's  
and I always got the same problems with restore. When using tar to write and  
read to the streamer no errors ocured.

Doe's anybody know this problem and how to solve it?

Thank you very much for your help.
-- 
Stati Marinos               | Phone :  +49 721 37 71 78
Gartenstr. 2                | Fax   :  +49 721 37 71 79
7500 Karlsruhe 1  (GERMANY) | E-Mail:  emarinos@marcon.ka.sub.org
Registered NeXTDeveloper    |      - NeXTMail welcome -

Re: HELP: Dump problem with HP 35480A DAT Streamer

#1556

Author: dlewis
Date: Sun, 10 Jan 1993 16:53

48 lines
2205 bytes

In article <1993Jan8.100905.601@marcon.ka.sub.org>  
emarinos@marcon.ka.sub.org (Evstathios Marinos) writes:
> Hi,
> 
> I've got problems with the DAT Streamer HP 35480A running at NeXT  
machines when  
> working with dump/restore.
> 
> Dumping files to the streamer workes fine, but performing a restore from  
a dump  
> produces a strange behaviour. Some times it works fine, the next time I  
get  
> following error:
> 
> ST:CMD=0x8 SR_IO_STATUS=2H
> Sense Key=0x0
> Sense Code=0x0
> Tape/Disk Read Error: I/O Error
> 
> I tried the streamer with various NeXT machines, Cube's, Mono's, Turbo  
Color's  
> and I always got the same problems with restore. When using tar to write  
and  
> read to the streamer no errors ocured.
> 
> Doe's anybody know this problem and how to solve it?
> 
> Thank you very much for your help.
> -- 
> Stati Marinos               | Phone :  +49 721 37 71 78
> Gartenstr. 2                | Fax   :  +49 721 37 71 79
> 7500 Karlsruhe 1  (GERMANY) | E-Mail:  emarinos@marcon.ka.sub.org
> Registered NeXTDeveloper    |      - NeXTMail welcome -

I've had this problem with HP DAT drives too. I've found that you can  
sometimes "reset" the SCSI for the tape by executing "restore i" before  
using "restore if /dev/nrst0". This causes an attempted access to the (on  
my machine) non-existent Exabyte interface, and seems to be equivalent to  
applying a "swift kick" to the machine. I've discovered that applying this  
procedure once after rebooting the machine seems to fix things till the  
next time the machine is rebooted. Give it a try.

DL
---
David Lewis
Senior Software Engineer
On contract to: Federal National Mortgage Association (Fannie Mae)
dlewis@fnma.com (NeXTmail OK), 202-752-4785

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