*BSD News Article 21071


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From: storm@cs.mcgill.ca (Marc WANDSCHNEIDER)
Newsgroups: comp.os.386bsd.questions,comp.os.386bsd.development
Subject: SCSI tape questions
Date: 18 Sep 1993 23:10:49 GMT
Organization: SOCS, McGill University, Montreal, Canada
Lines: 39
Message-ID: <27g4hp$uu@homer.cs.mcgill.ca>
NNTP-Posting-Host: mnementh.cs.mcgill.ca



Howdy!

	I'm looking to do some fiddling around with tape drive stuff,
	and had a few questions concering various things:

	1.  On the suns I used to work with, if the SCSI tape drive
	was an Exabyte drive, nrst0 would be used for 8200s, and
	nrst8 would be used for 8500s.  YOu could also use nrst0
	for 8500s in 8200 mode (or whatever it's called).

	Is there a similar mechanism in the BSD-du-jour code...?
	How does this relate to 2GB DAT drives...?

	2. In /usr/include/sys/mtio.h, there are  abunch of MT_IS*
	constants indicating which tape drive one has.  However,	
	there are a whole PILE Of drives not listed here.  Does
	that mean that mt -fxxxx status is just going to barf saying
	it doesn't know what the drive is, or will the system
	just map it to the closest code possible....



	The reason I'm asking all these questions is that I plan to 
	purchase a 2GB Sony or WangDAT DAT drive in the future and
	do a bunch of fiddling with the dump, mt, and rmt commands...

	Any thoughts or pointers to code would be greatly appreciated.



						Toodlepip!
						Marc em.
-- 
----------------------------------------------------------------------------
Marc Wandschneider					    Seattle, WA
	"Satan has a stranglehold on my toilet and he won't let go!"
			   - frm the Weekly World News