Can't access RAID - why?

[Martin Schulze <joey@finlandia.Infodrom.North.DE>]

Hi!

I've tried to access a third RAID0 in a system without any success but
a strange error message.

I've set up /dev/md2 with

	# mdcreate -c8k raid0 /dev/md2 /dev/sda2 /dev/sdb2

which resulted in this line in /etc/mdtab:

# mdtab entry for /dev/md2
/dev/md2        raid0,8k,0,0d445432     /dev/sda2 /dev/sdb2

After that I added this MD device to the system:

	# mdadd /dev/md2
	# cat /proc/mdstat
	Personalities : [2 raid0]
	read_ahead 8 sectors
	md0 : active raid0 hda2 hdb2 819312 blocks 4k chunks
	md1 : active raid0 hda4 hdb4 7405952 blocks 8k chunks
	md2 : inactive sda2 sdb2 1984818 blocks
	md3 : inactive

This looks ok so far.  However I'm unable to format  this new RAID
system:

	# mke2fs /dev/md2
	mke2fs 1.12, 9-Jul-98 for EXT2 FS 0.5b, 95/08/09
	/dev/md2: Invalid argument passed to ext2 library while setting up superblock

I appreciate any hin wrt fixing this.  It sucks.

Regards,

	Joey

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