Ubuntu instal nfs-server

* mkdir -p  /nfs/dev
*  fdisk  -l  ,  fdisk  /dev/sdc
* mkfs.ext4 /dev/sdc
*  mount /dev/sdc /nfs/dev/   ,   df -H
* vim /etc/fstab        ,             /dev/sdc                        /nfs/dev        ext4   defaults,discard        0 0
* apt-get update  &&   apt-get install -y nfs-kernel-server
* vi /etc/exports   添加      /nfs/dev    *(rw,sync,no_root_squash,no_all_squash)
* sudo /etc/init.d/rpcbind restart   &  sudo /etc/init.d/nfs-kernel-server restart
* systemctl  enable nfs-kernel-server  &  systemctl  enable rpcbind

Client install 
* apt-get install -y nfs-common 
* showmount -e 10.240.0.130
* mount -t nfs  10.240.0.130:/nfs/beta  /data    
* Vim /etc/fstab  ,  10.240.0.130:/nfs/dev   /data   nfs     defaults 0 0