*BSD News Article 79465


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From: dave@hypnos.neu.edu (Dave Brady)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: Multiple 2940 host adapters on 2.1.5
Date: 25 Sep 1996 17:07:31 GMT
Organization: Northeastern University, Boston, MA. 02115, USA
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Message-ID: <52bosj$8d0@chaos.dac.neu.edu>
References: <52ba78$2jk@itchy.serv.net>
NNTP-Posting-Host: hypnos.acs.neu.edu
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Sean T. Lamont (zeno@serv.net) wrote:

> Upon adding the second controller, the following happens:

> - The BIOS scan sees the 3 disks on the first controller
> - the BIOS scan sees the 3 disks on the second controller
> - FreeBSD boot prompt.
> - kernel comes up, sees ahc0 and ahc1 and some other stuff
> - errors.  (paraphrased, since I didn't write them down.)

>    "Cannot mount sd0 on root"
>    "init not found"
>    "panic. system will reboot in 15 seconds.


> As soon as I pull the second controller (actually, either controller.)
> off the motherboard, it boots fine. I've verified all the PNP interrupts
> are free, and I've checked the termination on both scsi busses.

  This sounds similar to what happened to me, when I added my second 2940.

  Try flipping the controllers around.

  By default, FreeBSD assigns sd0 onto the first controller that it finds 
when it scans the PCI bus.

  When you added the second controller, if you placed it into a lower-
numbered PCI slot that your other controller, FreeBSD will attempt to
assign sd0 to your new controller.  That doesn't work, of course.

--
Dave Brady                         Administrative Computer Services
Sr. UNIX System Administrator      Northeastern University
dave@acs.neu.edu                   Suite 448CP
Phone: (617) 373-4156              360 Huntington Avenue
FAX:   (617) 373-4354              Boston, MA 02115