Return to BSD News archive
Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!harbinger.cc.monash.edu.au!news.rmit.EDU.AU!news.unimelb.EDU.AU!munnari.OZ.AU!news.ecn.uoknor.edu!solace!nntp.uio.no!news.cais.net!jupiter.dnai.com!news
From: Karl Wiebe <karl@dnai.com>
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: 4mm DAT will TAR, but not DUMP.
Date: 28 Jun 1996 11:43:46 GMT
Organization: DNAI ( Direct Network Access )
Lines: 30
Message-ID: <4r0ghi$7vg@jupiter.dnai.com>
References: <4r0tj2$e39@piglet.cc.utexas.edu>
NNTP-Posting-Host: sol.dnai.com
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
X-Mailer: Mozilla 1.1N (X11; I; SunOS 4.1.4 sun4m)
X-URL: news:4r0tj2$e39@piglet.cc.utexas.edu
nichols@ccwf.cc.utexas.edu (Stewart Nichols) wrote:
>I have an Exabyte EXB-4200T 4mm DAT (yes DAT, not 8mm) scsi tape drive
>that is unable to handle dumps. I can tar to the drive, then read
>the tar with no problem, but a dump hangs the machine. Completely.
[ ... ]
>The scsi controller is an adaptec 1522A. (not set for DMA)
[ ... ]
> Jun 26 15:31:04 aspirin /kernel: (aic0:5:0): "EXABYTE EXB-4200 " type 1
> removable SCSI 2
> Jun 26 15:31:04 aspirin /kernel: st0(aic0:5:0): Sequential-Access density
> code 0x13, 512-byte blocks, write-enabled
I would try to isolate the problem to what SCSI command sequences/ioctls
trigger your machine hang. BTW, what kernel is this? Do you have the
SCSI_DEBUG option compiled in?
One place to look at are the mode pages. See scsi(8). Compare the Exabyte
to your other DAT drive. Also, I assume you have h/w docs for your EXB-4200?
You may end up having to change some jumper settings.
Maybe if you post verbose SCSI_DEBUG messages ( if you can get any ) that
occur prior to the system hang. That should give us a bit more to go on.
--Karl
--
== Karl Wiebe == karl@dnai.com ==
"Order is a form of repetition compulsion" --Freud
"Order is a form of repetition compulsion" --Freud
"Order is a form of repetition compulsion" --Freud