CentOS - Jan 2005 - Problem with SCSI controllers: Anaconda (and kernel option for grub/lilo)

Hi,

I do seem to have a slight problem with upgrading two of our machines to
CentOS (from SuSE, but that doesn't really matter).

Both systems are IBM x-Series 360 with a ServeRaid controller for the
"internal" hard disks an a QLogic QLA2200 fibre channel controller for
an external stack of disks.

On SuSE (kernel 2.4.26) the ServeRaid is controller 0 (resulting in the
internal Raid Array being /dev/sda) and the QLogic controller is
controller 1 (with the external disks being /dev/sdb).

With CentOS (yes, I did an unattended kickstart install) the QLogic is
recognized as the first controller, the ServeRaid as the second, so
CentOS is installed on the external disks (which kills the database
residing there).

Is there any possibility (be it software or hardware if anyone knows the
x360) to tell CentOS, that the ServeRaid controller has to be recognized
as the first controller and the QLogic as the second? This goes for
installation *and* operation later on, by way of a kernel command line
or whatever.

Thanks in advance,

Ralph Angenendt
-- 
Ralph Angenendt......ra at br-online.de | .."Text processing has made it
possible
Bayerischer Rundfunk...HA-Multimedia | ....to right-justify any idea, even one
Rundfunkplatz 1........80300 M?nchen | .which cannot be justified on any other
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USC
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On Thu, 13 Jan 2005 12:26:37 +0100, Ralph Angenendt
<ra+centos at br-online.de> wrote:
> Is there any possibility (be it software or hardware if anyone knows the
> x360) to tell CentOS, that the ServeRaid controller has to be recognized
> as the first controller and the QLogic as the second? This goes for
> installation *and* operation later on, by way of a kernel command line
> or whatever.
Possibly.  For operation later on it should be easy enough...just
rebuild your initrd, and have the ServeRaid controller modules load
first, the the QLogic.  This should be able to be done by editing
modules.conf and switching the order of your scsi_hostadapter aliases.
 I haven't actually done this with scsi adapters, but I really think
that will work.

As for during the installation, I'm not sure, maybe somebody else can
chime in.  But I think if you choose to do the "expert" mode during
installation you can manually load the modules one at a time.

-Ryan