*BSD News Article 2775


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From: engel@opal.cs.tu-berlin.de (Christian Engel)
Newsgroups: comp.unix.bsd
Subject: 386BSD 0.1 success and tape problem
Summary: error reading tapes, resid: 10240
Keywords: 386BSD, SCSI-Tape
Message-ID: <1992Jul31.150311.3229@cs.tu-berlin.de>
Date: 31 Jul 92 15:03:11 GMT
Sender: news@cs.tu-berlin.de
Organization: Techn. University of Berlin, Germany
Lines: 62

Hi out there,

I got the 386BSD0.1 working on my system. I have two problems.

Here is the system configuration :

	486/33MHz - 256KB Cache
	16 MB RAM
	ET4000/1MB VGA card
	AT-IO
	ADAPTEC 1542B
	SCSI Drive 0 : 330 MB Wren
	SCSI Drive 1 : 660 MB Wren
	SCSI Tape  2 : Wangtek 5150 ES

I had no problems installing the system on my harddisk(s). 
I built a new kernel with the lp.c driver for the printer which was 
contributed to the 386BSD-0.0. I attached a terminal to com1 and everything
worked fine up until this point.
I installed the previously posted kmem-patch (problem occurred).

I can write tapes without any problems. I am even able to read these tapes. 
By the way there are no speed problems, writing to and reading from tape
works with reasonable speed.

But I run into trouble trying to read tapes from a SUN (gnu-tar) and from 
another 486 machine with ISC-UNIX (SysV-ISC tar). 386BSD-0.1 shows the 
following behaviours:

1) SUN tape: (command: tar -xvf /dev/ras2a)
	- tape begins to run but does not read any input. After a while the
	system stops with resid: 10240 error

2) ISC tape: (same command as above)
	- system reads about 40 MBytes from the tape. Then it stops with
	an error message and resid: 10240 error


Has anyone out there any ideas ? Unfortunately I have no manuals for the
Adaptec controller so I cannot try to fix it by myself.


:::::::::::
2nd Problem
:::::::::::

When I built a new kernel, I normally try to copy it to the root directory
using a name, that doesn't exist in the root directory. 
Sometimes the system just stops execution while copying. 
No message is printed.
After a restart 
and the file system repair, you can see that a file was created but that its 
length is zero.

Any ideas or similar problems ?


--
------------------------------------------------------------------------
Christian Engel, TU-Berlin 	             mail: engel@cs.tu-berlin.de
TFS, dept of theoretical computer science,  formal specifications
address:   TU-Berlin, FR6-1, Franklinstr. 28/29, 1000 Berlin 10, Germany