[gentoo-user] help with Persistent hard disk device names with udev

[Pau Peris <sibok1981@gmail.com>]

Hi, i would like to give persistent device names to the system hard
drives (just renaming its original device name to the one i want using
its serial number as identifier). I've created the following rules
which are not currently working. I'm trying to use device serial
numbers to properly set its device name. One of the main reasons for
doing that is i have a RAID composed by 3 disk (let's say sda sdc sdd)
and when i plug another 4 disks sda becomes sde, sdc becomes sdg and
so on while new drives take old device names, that's why i would like
to make it sure device names remains always the same.
Here are the rules
Código:

SUBSYSTEM=="block", ATTR{serial}="VNVB05G2RKTRZH", NAME="hda"
SUBSYSTEM=="block", ATTR{serial}="9QK0T4WM", NAME="sda"
SUBSYSTEM=="block", ATTR{serial}="3QD0X58D", NAME="sdb"
SUBSYSTEM=="block", ATTR{serial}="9QK0RS9G", NAME="sdc"
SUBSYSTEM=="block", ATTR{serial}="9VP0SBVN", NAME="sdc"

KERNEL=="hd*", SUBSYSTEM=="block", ATTR{serial}="VNVB05G2RKTRZH", NAME="hda%n"
KERNEL=="sd*", SUBSYSTEM=="block", ATTR{serial}="9QK0T4WM", NAME="sda%n"
KERNEL=="sd*", SUBSYSTEM=="block", ATTR{serial}="3QD0X58D", NAME="sdb%n"
KERNEL=="sd*", SUBSYSTEM=="block", ATTR{serial}="9QK0RS9G", NAME="sdc%n"
KERNEL=="sd*", SUBSYSTEM=="block", ATTR{serial}="9VP0SBVN", NAME="sdc%n"


Should this work? Do some one know how can i get it to work? thanks in advanced