🚀 go-pugleaf

>I'm intrigued as to how diskless clients are supported under this
>massive sym-linking exercise, since they have no local disks, how do
>the sym-links point to an area of disk which is for that machine only?

Easy.  Each diskless machine has its own root file system, the root of
which is a per-machine directory on a file system on its server, e.g.:

	bootme% /etc/mount
	alpha1-e4:/export0/root/bootme on / type nfs (rw)
		...

>NB: With CDFs /usr can't be mounted read-only, but then somehow most
>machines seem to be able to survive that at the moment.

There's lots of things you can survive without, but it may be convenient
to have "/usr" read-only.