Actually, the query I would like to see has output
that looks like this (for example):

NODE_NAME               Count of Volumes
---------               ----------------
MELMARJO                3
MELMARJO                3
NODEA                   1
NODEB                   32

... and so forth.

On a server with a hundred or so clients, having
output like this would enable me to quickly spot
any node with a problem.

Then, for a particular node, like NODEB with
32 volumes, I would execute Bill's query to find
WHICH volumes have the data, and move the data if
I need to.