[4059] in linux-scsi channel archive
SV: Three Controller setup
daemon@ATHENA.MIT.EDU (Brian Schau)
Wed Jun 3 04:00:50 1998
From: Brian Schau <bsc@fleggaard.dk>
To: "'Keith Owens'" <kaos@ocs.com.au>
Cc: "'linux-scsi@vger.rutgers.edu'" <linux-scsi@vger.rutgers.edu>
Date: Wed, 3 Jun 1998 09:58:59 +0200
Long time ago I made a patch against 2.0.33 which lets you specify the
host boot order as a parameter to the kernel.
If anybody is interested in such a feature, I can send the patch ...
Regards,
Brian
> -----Oprindelig meddelelse-----
> Fra: Keith Owens [SMTP:kaos@ocs.com.au]
> Sendt: 3. juni 1998 09:41
> Til: John Gibson
> Cc: Linux Raid Mailing List; Linux SCSI Mailing List john
> Emne: Re: Three Controller setup
>
> On Tue, 02 Jun 1998 15:45:59 -0700,
> John Gibson <john.gibson@tekelec.com> wrote:
> >What it did do was load LILO: and the linux kernel off of the PCI
> >controller's boot disk. But after it loaded the aic7xxx driver and
> >(apparently) found all of the devices on the two 2940 PCI
> >controllers it loaded the 154x driver and assigned (?)
> >the 154x controller as SCSI controller #0. The two 2940
> >controllers were assigned as controllers 1 and 2. At that point it
> >attempted to find the boot device at SCSI ID #0 on controller 0
> (154x).
> >This, of course, failed as the boot device is on the 2940 controller.
>
> Edit linux/drivers/scsi/hosts.c. Find the lines
>
> #ifdef CONFIG_SCSI_AHA1542
> AHA1542,
> #endif
>
> Move the 1542 call to *after* the lines
>
> #ifdef CONFIG_SCSI_AIC7XXX
> AIC7XXX,
> #endif
>
> Make SUBDIRS=drivers/scsi zImage [or bzImage]. Install new kernel,
> run
> lilo, reboot. You have just moved the 1542 probe to after the aic7xxx
> probe, aic7xxx cards will be controller 0 and 1, 1542 will be
> controller 2.
>
> Alternatively, add these lines to /etc/lilo.conf
>
> disk=/dev/sdb1
> bios=0x80
>
> Tells lilo to ignore the BIOS and treat partition /dev/sdb1 as the
> boot
> disk.
>
> Which option you use depends on what effect you want. I use the first
> one because my 1542 external disks are rarely powered on. When they
> are powered on, I don't want my PCI SCSI drive numbers to change.
>
>
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