su problem

[Adam Myrow]

On Sat, 16 Aug 2003, Gregory Nowak wrote:

> I get the following error: "setgid: Operation not permitted".
>

This is a guess, but are you exporting your root volume with the
"no_root_squash" option as well as read/write?  If you don't use the
"no_root_squash" option, any access as root gets mapped to another user
ID.  Also, unless you say otherwise, a filesystem is read-only when
exported.