> if we have in exports
> 
> /usr/local/pub/sandbox -rw
> 
> and the /usr partition is a single filesystem. remote clients
> have rw for anything in /usr
I usually work around this (I hope!) by putting a null mount in between.
E.g. null-mount /usr/local/pub/sandbox to /export/sandbox and NFS-export that.
I hope I'm correct to believe that the filesystem the export is now limited to
is /export/sandbox in that case.