From: Ruibiao Qiu <ruibiao@arl.wustl.edu>
> I got errors when I tried to mount and use a NFS mounted dirtory.
> It shows as mounted in `mount`, but I cant access it.
> 
> # mount -a
> ...
> exec: mount_nfs -b -P server:/pkgsrc /usr/pkgsrc
> mount: statfs /usr/pkgsrc: Input/output error
 [snip]
> What causes the problem?  Thanks

  Do you (root == nobody) have proper access permission for the mount
directory on the server?

  Any file access, includes statfs and chdir, requires access
permission, and root has very limited permission (== nobody on most
systems) over NFS.
--
tate