*BSD News Article 10351


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Newsgroups: comp.unix.bsd
Path: sserve!manuel.anu.edu.au!munnari.oz.au!uunet!gatech!usenet.ins.cwru.edu!agate!tfs.com!julian
From: julian@tfs.com (Julian Elischer)
Subject: Re: please help with SCSI tape and 386BSD!
Message-ID: <1993Jan25.055719.25304@tfs.com>
Organization: TRW Financial Systems, Berkeley, CA - 94704
References: <727481242rommel.root@jonas.gold.sub.org> <727806169rommel.root@jonas.gold.sub.org>
Date: Mon, 25 Jan 1993 05:57:19 GMT
Lines: 45

In article <727806169rommel.root@jonas.gold.sub.org> rommel@jonas.gold.sub.org (Kai Uwe Rommel) writes:
>In article <727481242rommel.root@jonas.gold.sub.org> rommel@jonas.gold.sub.org (Kai Uwe Rommel) writes:
>>I have a SCSI tape drive (Tandberg 4120) and want to read 386BSD from
>>it after installing the boot disk, which worked fine. I can prepare a
>>tape with 386BSD under OS/2 but cannot read it under 386BSD. In fact,
>>386BSD cannot read *anything* from the tape.
>>
[deleted]
>>
>>However, when I try to access the tape (even with cat, not only with
>>tar), it streams a bit and when using "tar tv" I see one line with the
>>contents of the first record (correct, BTW) and then I only get the
>>message "length error". What is wrong here and what can I do?

The record length handling code is broken in the 
present scsi tape driver, due to the accidental incusion of a 
well meaning but wrong patch.

I am nearly ready to release a 'fixed' version, but I'm going to need
guinea-pigs, as I have only variable record length drives to check
it on.

>>
>Update: I have today tried a HP 35470A DAT drive and to my surprise it
>works. It is a SCSI-2 device like the Tandberg streamer but unlike the
>Tandberg it works fine. I suspect that they respond a bit differently
>to SCSI commands. 
>
>Does anyone know the fix for 386BSD to get the Tandberg working? BTW,
>both the Tandberg and the HP DAT work fine under OS/2, so it's not a
>fault in the hardware.

hopefully the answer may be on the way.
8-)

>
>Kai Uwe Rommel

julian
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