F16 anaconda's ability to create raid[1-6] devices?

[Jurgen Kramer]

Is anaconda supposed to be able to create a raid1-5 device during
installation?
I managed to let ananconda create 4 software raid partitions but after I
select to create a raid device it gives me "Only RAID0 arrays can
contain growable members" for every valid raid level except 0.

Each raid partition is created with 'maximum fill'

NB when anaconda creates software raid partitions it lists them as such
on reboot and restart of the installer the same partitions are named
"unknown". Checking with parted shows normal software raid partitions
with a GPT partition scheme. 

Jurgen