*BSD News Article 2056


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Path: sserve!manuel!munnari.oz.au!uunet!spool.mu.edu!agate!soda.berkeley.edu!wjolitz
From: wjolitz@soda.berkeley.edu (William F. Jolitz)
Newsgroups: comp.unix.bsd
Subject: Re: 386BSD & AHA1542B & CDC94171-9 Disk problem
Message-ID: <14ca62INNhfr@agate.berkeley.edu>
Date: 19 Jul 92 17:53:06 GMT
Article-I.D.: agate.14ca62INNhfr
References: <1992Jul19.121003.27453@ulrik.uio.no>
Organization: U.C. Berkeley, CS Undergraduate Association
Lines: 19
NNTP-Posting-Host: soda.berkeley.edu

In article <1992Jul19.121003.27453@ulrik.uio.no> tha@ulrik.uio.no writes:
> ...
>	changing root device to fd0a
>	as0b: controller error 0x16 reading fsbn 0
>	scsi sense: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
>	as0b: controller error 0x16 reading fsbn 0
>	scsi sense: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0


This looks like the problem Rob Warnock had with the Adaptec. Try running
the diagnostic program's that just exercise DMA without a disk. If it randomly
fails, that's it. Rob found that when he "dumbed down" the config by adding
wait states to memory, then the SCSI controller would randomly fail.

According to my Adaptec manual,this is an invalid CCB operation Code,
which indicates that the DMA of the CCB failed. So it's got to be a config
problem of some kind...

Bill