Problens creating a Linux domU

["Andre Filipe de Assuncao e Brito (decko)" <decko%decko.org@localhost>]

Hi guys! I'm having a problem creating a Linux domU.
I'm getting this error:
[2007-01-15 10:37:20 xend] DEBUG (blkif:24) exception looking up
device number for 0x301: [Errno 2] No such file or directory: '/dev/0x301'

The line referring to disks on my config file is this:

disk = [ 'phy:/dev/vnd0e,0x301,w' ]

It's necessary create the Linux dev files on dom0???

Thanks