still i didn't leave it to chance.
i changed the drives type from the partition table with fdisk to 'linux' (code=83).
then reformatted all of them with mkreiserfs.
finally used the following /etc/raidtab file
and did 'mkraid /dev/md0'...
this time around df returns the proper size (thats 4-1 drivers x 320GB = 960GB).
once done, i changed the partition table type back to 'fd' (linux raid) and
FORMATTED also /dev/md0 node, cause it wouldn't find a superblock on this node.
so mkreiserfs /dev/md0 too..
done with that too , i mounted, restarted and found that it was properly mounted...
and df always returns correct...
just a question. if i do:
root@Stargaze:~# mdadm -E /dev/md0
mdadm: No md superblock detected on /dev/md0.
i get this response...
is that normal? i mean only the partitions making up a raid array have a superblock? or the /dev/md0 node too?