Unfortunately it does NOT work on DELL R900. The reason is DELL R900 internal RAID and external RAID use same driver. There is NO way to change adapter sequence on /etc/modprobe.conf.
Well, I suspect a udev rule *might* work to rename the discs, but labels or uuid's aren’t designed to *change* the name (who cares?), they are designed to cause mount to "mount" the expected disc :) It makes much more sense to focus on that than to maintain aesthetics which again can be changed in the future so the solution is not failsafe.
To each his own I guess!
jlc
--- 09/7/1 (三)，Ross Walker rswwalker@gmail.com 寫道：
寄件者: Ross Walker rswwalker@gmail.com 主旨: Re: [CentOS] How to change Disk sequence on DELL R900 CENTOS 5.3? 收件者: "CentOS mailing list" centos@centos.org 日期: 2009年7月1日,三,上午11:59 2009/7/1 mcclnx mcc mcclnx@yahoo.com.tw:
Thank you for answer.
I change /etc/fstab and using UUID instead of LABEL.
蟵fter reboot, UUID did NOT change disk sequence back to what I want. 泎oot device original /dev/sda1, it still /dev/sdc1 NO change.
Modify modprobe.conf to list the disk driver you want loaded in the order you want then re-make the initrd file:
For example, say you want your internal SATA disks recognized before your SAS RAID disks, your modprobe for the scsi_hostadapter would look something like this:
alias scsi_hostadapter ata_piix (or ahci, sata_XXX whatever your SATA controller is) alias scsi_hostadapter0 megaraid_sas
Then you remake your initrd with a command:
mkinitrd -f /boot/initrd-$(uname -r).img $(uname -r)
Remember to use LABELs or UUIDs in fstab first or your partitions won't mount (wrong disk names)!
Then reboot.
-Ross _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
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