mkraid does this:
[root@penguin rothwell]# mkraid /dev/md0
handling MD device /dev/md0
analyzing super-block
disk 0: /dev/sda2, 8369865kB, raid superblock at 8369792kB
/dev/sda2 appears to contain an ext2 filesystem -- use -f to override
mkraid: aborted
[root@penguin rothwell]# mkraid --really-force /dev/md0
DESTROYING the contents of /dev/md0 in 5 seconds, Ctrl-C if unsure!
handling MD device /dev/md0
analyzing super-block
disk 0: /dev/sda2, 8369865kB, raid superblock at 8369792kB
disk 1: /dev/sdb2, 8369865kB, raid superblock at 8369792kB
disk 2: /dev/sdc2, 8369865kB, raid superblock at 8369792kB
disk 3: /dev/sdd2, 8369865kB, raid superblock at 8369792kB
mkraid: aborted
[root@penguin rothwell]#
[root@penguin rothwell]# cat /etc/raidtab
# Sample raid-5 configuration
raiddev /dev/md0
raid-level 5
nr-raid-disks 4
chunk-size 128
#persistent-superblock 1
# Parity placement algorithm
parity-algorithm left-symmetric
#parity-algorithm left-asymmetric
#parity-algorithm right-asymmetric
#parity-algorithm right-symmetric
# Spare disks for hot reconstruction
#nr-spare-disks 0
device /dev/sda2
raid-disk 0
device /dev/sdb2
raid-disk 1
device /dev/sdc2
raid-disk 2
device /dev/sdd2
raid-disk 3
-- why?
Thanks!
Michael Rothwell
Director, Internet Application Development
InterLan Technologies
111 Corning Road #150
Cary, NC 27513
v: (919) 852-0690
f: (919) 852-0501
e: [EMAIL PROTECTED]
