Subject: Re: Errors reading dump on Exabyte 8200
To: None <netbsd-help@netbsd.org>
From: Marinier, M. Claude, G. <claude.marinier@dreo.dnd.ca>
List: netbsd-help
Date: 09/02/1998 08:43:48
Hi,

I have solved the problem. Brett Lymn of British Aerospace Australia
provided the missing information.

On Mon, 31 Aug 1998, Brett Lymn <blymn@baea.com.au> wrote:
> Do you use the same blocking factor in your restore command line?  The
> manual states that restore is supposed to dynamically determine the
> blocking factor but in my experience the sentence should be extended
> with "but always fails to work".

It works well when I specify the blocking factor explicitely.

I also gave up on the Exabyte. It does not behave as well as the DAT. When
using the Exabyte, dump would report I/O error. With the DAT, dump does
not complain though here are some messages on the console (they seem to be
informational). Since I can both dump and restore without problems, I will
not worry about them. One interresting note: the Exabyte 8200 is a SCSI 2
device while the Python DAT is a SCSI 2 device.

Thanks to those who responded.

On Fri, 28 Aug 1998, Claude Marinier wrote:
> I am setting up a server: NetBSD 1.3.2 (GENERIC for now) on a Pentium II
> 233 MHz with 128 MB, an AHA-2940, and an Exabyte 8200 (also tried a Python
> DAT). I have created a dump tape on the 8200 but cannot read it (restore
> -i does not get to the prompt). There were some I/O errors while the dump
> script ran. I switched to a DAT drive and got the same kind of behaviour.
> However, I was able to write to it and read from it without any errors
> using 'tar cf' and 'tar tf'.
> 
> I have searched for an answer but found none. I get the impression that
> this have been done many times before. I must be missing something basic.
> I have included the dump script.
> 
> If this is not a simple matter of forgetting an option on the dump command
> (or some such thing), I will gather more information and resubmit.

--------------------
Claude Marinier, Information Technology Group    claude.marinier@dreo.dnd.ca 
Defence Research Establishment Ottawa (DREO)    (613) 998-4901  FAX 998-2675
3701 Carling Avenue, Ottawa, Ontario  K1A 0Z4         http://www.dreo.dnd.ca