xen auto start vms

Ok, so I've searched the forums but haven't come up with a solid solution. Hopefully one of the experts here can help me out.

I'm trying to start my vm (ironic's arch vm) on boot on a 'go' mounted drive.

Go script:

mkdir /mnt/vms
mount /dev/disk/by-id/ata-Maxtor_6L250R0_L59LH84G-part1 /mnt/vms
ln -s /mnt/vms/ArchVM/arch.cfg /etc/xen/auto/arch.cfg

So, here is my thinking:

1) Use go script to create symlink in /etc/xen/auto because otherwise it would be lost on reboot

2) Forget using cache drives because at this point I don't want my VMs to end up in limbo if I shutdown the array in webgui

3) I'm pretty sure xen is trying to autoload BEFORE the go script runs, which obviously won't work.

All I want to do is have my VM autostart on boot once the array is started. Seems simple, but I'm obviously missing something...

Thanks

Edit: Humm, thinking about it this won't work too well either regardless of autostart because I'll need a cache drive for NFS shares for sab downloads...