Partition GPT more than 2TB. For instance 4 TB :)

No problem!

parted /dev/cciss/c0d1p1
mklabel gpt
mkpart primary ext4 1 -1 # 1 and -1 mean from begining to end of table = whole disc.

And finish: mkfs.ext4 /dev/cciss/c0d1p1


Sometimes: Warning: The resulting partition is not properly aligned for best performance.
So: Write from 0% to 100%

(parted) mkpart
Partition name?  []? w-raid
File system type?  [ext2]? ext4
Start? 0%
End? 100%