Andi Kleen wrote:

I remember long ago seeing a cluster of machines that had circular dependencies in their boot time NFS mounts. Generated quite a mess when the cluster had to be rebooted.

A long time ago when I worked in a support department, I used to make sure the machines were configured like this. It stopped anybody stealing one of the machines to replace a failed customer machine :) And yes, getting the boot scripts right was a pain! Cheers, Dave