使用portmap+nfs-utils的工具在hi3531d的linux系统上搭建nfs服务器，使用VM虚拟机中的ubuntu作为客户端挂载，进行文件的读写。

1.首先对linux内核进行修改，让linux内核支持nfs服务器的功能，修改方式是在内核目录arch/arm/configs目录下的hi3531d_defconfig文件添加如下图所示，再进行内核编译，并将内核下载板卡上。

 

2.Portmap和nfs-utils的下载，其中portmap的下载地址为：https://fossies.org/linux/misc/portmap-6.0.tar.bz2；

 

nfs-utils的下载地址为： Index of /pub/linux/utils/nfs-utils/1.3.3/

 

3.portmap的解压、修改与编译

4.nfs-utils的解压、修改与编译

 

./configure --build=arm-hisiv500-linux --host=arm-linux --disable-nfsv4 --disable-gss --disable-uuid --disable-mount --disable-tirpc --disable-ipv6 --without-tcp-wrappers CC=arm-hisiv500-linux-gcc

 

5.将编译后的文件安装到/home/alinx/work/hi3531d_BK2010/nfs-utils目录下，如下图流程

make DESTDIR=/home/alinx/work/hi3531d_BK2010/nfs-utils install -strip

6.进入安装目录nfs-utils/sbin的文件如下图所示：

 

7.将编译好的portmap、 rpc.statd、 rpc.nfsd、rpc.mountd和exportfs文件拷贝到hi3531d板卡上。其中 portmap 放到 /sbin下，其余的放到 /usr/sbin下。注意以上5个文件拷贝到hi3531d板卡上，使用chmod +x 给每个文件赋予执行权限。

 

 

8.在hi3531d板卡的/etc/init.d目录下新建S60nfs脚本文件，添加如下内容：

#!/bin/sh
#
# nfs           This shell script takes care of starting and stopping
#               the NFS services. Stolen from RedHat FC5.

[ -x /sbin/portmap ] || exit 0
[ -x /usr/sbin/rpc.statd ] || exit 0
[ -x /usr/sbin/rpc.nfsd ] || exit 0
[ -x /usr/sbin/rpc.mountd ] || exit 0
[ -x /usr/sbin/exportfs ] || exit 0

# Don't fail if /etc/exports doesn't exist; create a bare-bones version and continue.
[ -r /etc/exports ] || \
    { touch /etc/exports && chmod u+rw,g+r,o+r /etc/exports ; } || \
    { echo "/etc/exports does not exist" ; exit 0 ; }
    
# The /var/lib/nfs directory is actually on a tmpfs filesystem.
mkdir -p /var/lib/nfs/sm
mkdir -p /var/lib/nfs/sm.bak
touch /var/lib/nfs/etab
touch /var/lib/nfs/rmtab
touch /var/lib/nfs/state
touch /var/lib/nfs/xtab

start() {
	# Start daemons.
	echo -n "Starting port mapper: "
	portmap                         
	echo "done"                     

	echo -n "Starting NFS statd: "
	rpc.statd
	touch /var/lock/subsys/nfslock
	echo "done"

	echo -n "Starting NFS services: "
	/usr/sbin/exportfs -r
	rpc.statd
	echo "done"

	echo -n "Starting NFS daemon: "
	rpc.nfsd 2
	echo "done"

	echo -n "Starting NFS mountd: "
	rpc.mountd
	echo "done"
	touch /var/lock/subsys/nfs
}

stop() {
	# Stop daemons.
	echo -n "Shutting down NFS mountd: "
	killall -q rpc.mountd
	echo "done"

	echo "Shutting down NFS daemon: "
	kill -9 `pidof nfsd` 2>/dev/null
	echo "done"

	echo -n "Shutting down NFS services: "
	/usr/sbin/exportfs -au
	rm -f /var/lock/subsys/nfs
	killall -q rpc.statd
	echo "done"

	echo -n "Stopping NFS statd: "
	killall -q rpc.statd
	echo "done"
	rm -f /var/lock/subsys/nfslock

	echo -n "Stopping port mapper: "
	killall -q portmap
	echo "done"
}

# See how we were called.
case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart)
	stop
	start
	;;
  reload)
	/usr/sbin/exportfs -r
	touch /var/lock/subsys/nfs
	;;
  *)
	echo "Usage: nfs {start|stop|reload}"
	exit 1
esac

exit 0

9.在hi3531d板卡的/etc目录下，添加exports文件，如下图所示：

 

10.在hi3531d板卡的/etc目录下，在servers文件中添加nfsd的支持，如下图所示：

 

11.在hi3531d板卡的linux系统中开启nfs的服务，如下图所示：

/etc/init.d/S60nfs restart