*BSD News Article 63188


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Newsgroups: comp.unix.bsd.freebsd.misc
Path: euryale.cc.adfa.oz.au!newshost.anu.edu.au!newshost.telstra.net!act.news.telstra.net!psgrain!usenet.eel.ufl.edu!news.mathworks.com!uunet!in2.uu.net!news.new-york.net!ritz.mordor.com!ritz
From: ritz@ritz.mordor.com (Chris Mauritz)
Subject: Strange Reboot Problem
X-Newsreader: TIN [UNIX 1.3 950824BETA PL0]
Lines: 31
Organization: Mordor International
Message-ID: <DnwxM1.KK6@ritz.mordor.com>
Date: Thu, 7 Mar 1996 19:46:49 GMT

I helped some folks put FreeBSD 2.1R on a Micron P100 and they 
are having a strange problem.  When they try to dump a filesystem
to tape, the system sometimes crashes and reboots.  The crash is
ugly enough that it doesn't leave any core file to do a useful
autopsy.  This only happens during dumps to tape.  If they don't
access the tape, the machine runs flawlessly.

The system:

Micronics P100 mboard
48mb RAM
256k cache
3Com 3C509 ethernet card
Buslogic 946C
Seagate 4gig Barracuda internal (terminated)
Conner 4gig 7200rpm drive external (not terminated)
Conner 4-8gig DAT drive external (terminated) <-- last device
3ft cable to 1st external device
2ft cable to daisy-chain external drive/tape

I have bought the heaviest duty cables (DEC) and used a quality
active terminator.  I've also fsck'ed all partitions and made
sure that disconnect is enabled for the tape drive.

I am stumped.  Any ideas?  Help!  :-)

Regards,

Chris


-- 
Christopher Mauritz         | For info on internet access:
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