showing what machines are mounting a certain nfs share?

[irb]

* Quoth Dan Lund (situationalawareness at gmail.com), on Thu, 2006.08.17, at 11:13 -0700:
> Does anyone know a way to find out what machines currently have a
> certain nfs share mounted? (server-side)
> 
> I have an Oracle NFS partition I'm looking to deallocate for other
> use, but I want to make sure every machine that currently has it
> mounted is.. .well... unmounted :)

Try showmount --all on the NFS server.

/i.