[clug] Old stripe not starting on RH9.0

[Brett Worth]

I have a problem getting changes I make to my raid configuration being
recognised.  At install I configured two IDE drives for raid 1 and am now
trying to incorporate an old SCSI stripe into the config as md3.

# cat /proc/mdstat 
Personalities : [linear] [raid0] [raid1] [raid5] 
read_ahead 1024 sectors
md0 : active raid1 hdb1[1] hda1[0]
      10482304 blocks [2/2] [UU]
      
md2 : active raid1 hdb3[1] hda3[0]
      66613440 blocks [2/2] [UU]
      
# raidstart /dev/md3
# tail -N /var/log/messages
unused devices: <none>
Apr 13 17:08:21 cbrserv kernel: md: autorun ...
Apr 13 17:08:21 cbrserv kernel: md: considering sdb3 ...
Apr 13 17:08:21 cbrserv kernel: md:  adding sdb3 ...
Apr 13 17:08:21 cbrserv kernel: md:  adding sda3 ...
Apr 13 17:08:21 cbrserv kernel: md: md2 already running, cannot run sdb3
Apr 13 17:08:21 cbrserv kernel: md: export_rdev(sda3)
Apr 13 17:08:21 cbrserv kernel: md: (sda3 was pending)
Apr 13 17:08:21 cbrserv kernel: md: export_rdev(sdb3)
Apr 13 17:08:21 cbrserv kernel: md: (sdb3 was pending)
Apr 13 17:08:21 cbrserv kernel: md: ... autorun DONE.

I notice that with RH9.0 the raid partitions are of type 
	"0xfd  Linux raid autodetect"

The sda and sdb partitons I'm trying to integrate are "0x83  Linux" and
have been that way for years.  Does this no longer work?

Am I going to break something if I change the partition types 
from 83 to fd i.e. Is there something extra at the start of and fd partiton?

# cat /etc/raidtab
raiddev             /dev/md0
raid-level                  1
nr-raid-disks               2
chunk-size                  64k
persistent-superblock       1
nr-spare-disks              0
    device          /dev/hda1
    raid-disk     0
    device          /dev/hdb1
    raid-disk     1
raiddev             /dev/md2
raid-level                  1
nr-raid-disks               2
chunk-size                  64k
persistent-superblock       1
nr-spare-disks              0
    device          /dev/hda3
    raid-disk     0
    device          /dev/hdb3
    raid-disk     1
raiddev             /dev/md3
raid-level              0
nr-raid-disks           2
persistent-superblock   1
chunk-size              64k
        device          /dev/sda3
        raid-disk       0
        device          /dev/sdb3
        raid-disk       1

-- 
Brett

  /) _ _ _/_/ / / /  _ _//
 /_)/</= / / (_(_/()/< ///

 Cray Australia.
 brettw at cray.com +61 2 6295 4023

PGP: 1024R/27EB604F  22A9 A85A 22BD 496B 2443  
                     35E5 46F7 0712 27EB 604F