CentOS - Aug 2012 - Order of sata/sas raid cards

Hi.

I bought a new Adaptec 6405 card including new (much larger) SAS drives
(arrays).

I need to copy content of the current SATA (old adaptec 2405) drives to the new
SAS drives.

When I put the new controller into the machine, the card is seen and I can see
that the kernel loads the new drives and the old drives. The problem is that the
new drives are loaded as SDA and SDB, which then stops the kernel loading,
becasue it cannot find root and get kernel panic.

Is there a way to tell the kernel in which order to load the drives and assign
the drive order in a way that the new drives are assigned SDC and SDD and the
old drives get SDA and SDB?

thanks
Jobst


-- 
Why are a wise man and a wise guy opposites?

  | |0| |   Jobst Schmalenbach, jobst at barrett.com.au, General Manager
  | | |0|   Barrett Consulting Group P/L & The Meditation Room P/L
  |0|0|0|   +61 3 9532 7677, POBox 277, Caulfield South, 3162, Australia

On 08/23/12 12:13, Jobst Schmalenbach wrote:
> Is there a way to tell the kernel in which order to load the drives
> and assign the drive order in a way that the new drives are assigned
> SDC and SDD and the old drives get SDA and SDB?
use UUID= in fstab (lsblk -o NAME,KNAME,UUID) and you will get rid of
all this headaches (if you have software raid the assembling is done
internally based on UUID so you don't have to worry about mdraid)

HTH,
Adrian