I need to map uid's and gid's for nfs exports using static maps. The man
page for exports(5) says that this can be done by specifying the map file
as a mapping option.

When I put the line "/data opus(rw,map_static=/etc/nfs/foobar.map)" in
the /etc/exports, create =/etc/nfs/foobar.map, and `exportfs -a` , I get
the error message 'exportfs: Unknown
Keyword "map_static=/etc/nfs/foobar.map" in export file'