Misleading mdrun error msg

[Torsten Kuehn]

I received an obscure 'bad parameter' error msg with 'mdrun -p5 /dev/md0'
(after successful 'mdadd /dev/md0 /dev/sda2 /dev/sdb1 /dev/sdc1'). Ker-
nel error log revealed 'md: 08:02: invalid raid superblock magic (0) on block..'
Item 1b. c) is missing in QuickStart.RAID, with 'mkraid -f /etc/raid5.conf',
everything works fine (/dev/sda2 contained ext2fs, but mdrun didn't say so).
Torsten