*BSD News Article 60434


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Is this SCSI problem my drives or my BusLogic 946C ?
Date: 23 Jan 1996 23:48:07 GMT
Organization: Private BSD site, Dresden
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Message-ID: <4e3s3n$6th@uriah.heep.sax.de>
References: <4dv17n$269@venus.os.com>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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craigs@os.com (Craig Shrimpton) writes:

> I just had a weird SCSI incident that shut down my news server.  The
> system is new and has been running for about a week with no
> problems.  All of a sudden INN throttles with the following errors:

> Jan 21 15:27:24 venus /kernel: sd0(bt0:2:0): UNIT ATTENTION asc:29,0
> Jan 21 15:27:24 venus /kernel: sd0(bt0:2:0):  Power on, reset, or bus device 
> reset occurred
> Jan 21 15:27:24 venus /kernel: , FAILURE
> Jan 21 15:27:24 venus /kernel: sd0(bt0:2:0): NOT READY asc:4,1
> Jan 21 15:27:24 venus /kernel: sd0(bt0:2:0):  Logical unit is in process of 
> becoming ready
> Jan 21 15:27:24 venus /kernel: , retries:4bec
> Jan 21 15:27:24 venus /kernel: , retries:4
> Jan 21 15:27:24 venus /kernel: sd0(bt0:2:0): NOT READY asc:4,1
> Jan 21 15:27:24 venus /kernel: sd0(bt0:2:0):  Logical unit is in process of 

Your disk is going mad.  It took itself offline for a short period.

This is either a bad disk, or some cabling or power supply problem.
I've also seen problems where a drive attempted to feed term power to
the SCSI bus, and the SCSI adaptor, too.  Removing the `term power'
jumper solved this problem.

-- 
cheers, J"org

joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE
Never trust an operating system you don't have sources for. ;-)