Re-ordering disks on boot

[Mark Bradbury]

On Thu, 2004-06-17 at 00:44, Joseph Hardin wrote:
> 
> 
> I am running RHEL3.0 update1 and I am having a problem with my disk
> ordering.
> 
> I recently added a qlogic HBA and allocated some san disk, now when I
> boot the machine the hba comes up as /dev/sda and my local disks are
> pushed back to /dev/sdb and /dev/sdc. I realize that when the machine
> boots it's scans for devices and it's finding the hba first, therefore
> labeling this disk /dev/sda, however I can't find where I can force this
> device to be discovered last.
> 
> >From a support perspective I need to be able to force redhat to
> recognize my local disks as /dev/sda and /dev/sdb and my san disk as
> /dev/sdc. I have tried this through modules.conf, however, I am not
> having much luck.
> 
> Does anyone have any ideas?


You seem to have scsi local disks so you should be able to edit
/etc/modules.conf and add a number on the end of the alias for the hba
then remake your /boot/initrd file with /sbin/mkinitrd this will then
load the module for you local drives first so they should turn up as the
first drives. Heres the entries in my modules.conf file 

alias scsi_hostadapter1 megaraid
alias scsi_hostadapter2 megaraid
alias scsi_hostadapter96 qla2200_6x
options scsi_mod scsi_allow_ghost_devices=1

Hope this helps


-- 
Mr Mark Bradbury RHCE
Senior System Support Officer (UNIX)
Information Technology & Management Support
Charles Darwin University | CRICOS 300K
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