Software raid OK?

[BAGI Akos <abagi@compuflex.hu>]

Hi List!

I installed a software raid, level1 with 3 disks, one of them is a spare.

I have 2 partitions:
md0 is for / and is made of sda1,sdb1, sdc1
md1 is for swap and made of sda2,sdb2, sdc2

- I can boot form both disks,
- the system works fine.
- mdstat says the raids are active
- mdmadm --detail seems to be fine ( Superblock is persistent )

However
mdadm -E says: no md superblock detected on /dev/md0
and
fdisk -l says: no valid partition table found on md0


Is the raid OK or not?
If not, how can I fix it?

THX
Akos