I think everyone would be interested in the updated version!
Ok, I've put up the newer version of topvol which allows you to optionally filter the volumes based on aggregates. Here is an example of using topvol without aggregate filtering:
./topvol filername 4 5 ops
and a example of filtering on an aggregate called aggrsata750. This will only show you the volumes that are in aggrsata750.
./topvol filername:aggrsata750 4 5 ops
You can find the download here:
http://communities.netapp.com/docs/DOC-1262
Please let me know if you have any questions or comments.
Enjoy,