mount: RPC: Unable to receive; errno = Connection refused 的解决方法

192.168.70.58: ~# mount -o nolock 192.168.70.178:/emrc-etc  /mnt/EMRC-ETC
mount: RPC: Unable to receive; errno = Connection refused
mount: mounting 192.168.70.178:/emrc-etc on /mnt/EMRC-ETC failed: Bad file descriptor

原因是没安装 portamp 你需要
apt-get install nfs-kernel-server
然后
/etc/init.d/portmap restart
就好了