[Linux-cluster] Fence device, How it work

[Graham Wood]

> Now if the node comes up semi-functional and attempts to regain
> control over the ressource that it owned before, then that could
> be bad.
So don't have it automatically try and do anything with the cluster
resources on a boot.

The I/O block just guarantees that it doesn't do anything - not having it
doesn't force you to do anything with it.