In the case that NFS is already started on a Gentoo host, /etc/init.d/nfs start will not reload exports, but fail. /etc/init.d/nfs reload is known to fail for some esoteric configurations of /etc/exports, restart should be safe for existing connections.
To reload /etc/exports, /sbin/exportfs is best way
to command it in standard.
It modify generic linux to check daemon status
before restart instead of restarting everytime.
Signed-off-by: Hiroshi Miura <miurahr@linux.com>