#!/bin/sh

#

# nfs           This shell script takes care of starting and stopping

#               the NFS services.

#

# chkconfig: - 60 20

# description: NFS is a popular protocol for file sharing across TCP/IP \

#              networks. This service provides NFS server functionality, \

#              which is configured via the /etc/exports file.

# probe: true

# config: /etc/sysconfig/nfs

# Source function library.

. /etc/rc.d/init.d/functions

# Source networking configuration.

if [ ! -f /etc/sysconfig/network ]; then

    exit 0

fi

. /etc/sysconfig/network

# Check that networking is up.

[ ${NETWORKING} = "no" ] && 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.

[ -s /etc/exports ] || \

    { echo "#" > /etc/exports && chmod u+rw,g+r,o+r /etc/exports ; } || \

    { echo "/etc/exports does not exist" ; exit 0 ; }

# Check for and source configuration file otherwise set defaults

# TUNE_QUEUE: controls whether to up the size of input queues

[ -f /etc/sysconfig/nfs ] && . /etc/sysconfig/nfs

[ -z "$MOUNTD_NFS_V2" ] && MOUNTD_NFS_V2=auto

[ -z "$MOUNTD_NFS_V3" ] && MOUNTD_NFS_V3=auto

# Number of servers to be started by default

[ -z "$RPCNFSDCOUNT" ] && RPCNFSDCOUNT=8

# Remote quota server

[ -z "$RQUOTAD" ] && RQUOTAD=`type -path rpc.rquotad`

# Get the initial values for the input sock queues

# at the time of running the script.

if [ "$TUNE_QUEUE" = "yes" ]; then

    RMEM_DEFAULT=`/sbin/sysctl -n net.core.rmem_default`

    RMEM_MAX=`/sbin/sysctl -n net.core.rmem_max`

    # 256kb recommended minimum size based on SPECsfs NFS benchmarks

    [ -z "$NFS_QS" ] && NFS_QS=262144

fi

# See how we were called.

case "$1" in

  start)

	# Start daemons.

	# Apply input queue increase for nfs server

	if [ "$TUNE_QUEUE" = "yes" ]; then

 	    /sbin/sysctl -w net.core.rmem_default=$NFSD_QS >/dev/null 2>&1

	    /sbin/sysctl -w net.core.rmem_max=$NFSD_QS >/dev/null 2>&1

	fi

	action $"Starting NFS services: " /usr/sbin/exportfs -r

	if [ -n "$RQUOTAD" -a "$RQUOTAD" != "no" ]; then

	    echo -n "Starting NFS quotas: "

	    daemon rpc.rquotad

	    echo

	fi

	echo -n $"Starting NFS daemon: "

	daemon rpc.nfsd $RPCNFSDCOUNT

	echo

	[ -n "$MOUNTD_PORT" ] \

	&& RPCMOUNTDOPTS="$RPCMOUNTDOPTS -p $MOUNTD_PORT"

	case $MOUNTD_NFS_V2 in

	auto|AUTO)

	    # Let's see if we support NFS version 2.

	    /usr/sbin/rpcinfo -u localhost nfs 2 &>/dev/null

	    if [ $? -ne 0 ]; then

		RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 2"

	    fi

	    ;;

	no|NO)

	    RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 2"

	    ;;

	yes|YES)

	    RPCMOUNTDOPTS="$RPCMOUNTDOPTS --nfs-version 2"

	    ;;

	esac

	case $MOUNTD_NFS_V3 in

	auto|AUTO)

	    # Let's see if we support NFS version 3.

	    /usr/sbin/rpcinfo -u localhost nfs 3 &>/dev/null

	    if [ $? -ne 0 ]; then

		RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"

	    fi

	    ;;

	no|NO)

	    RPCMOUNTDOPTS="$RPCMOUNTDOPTS --no-nfs-version 3"

	    ;;

	yes|YES)

	    RPCMOUNTDOPTS="$RPCMOUNTDOPTS --nfs-version 3"

	    ;;

	esac

	echo -n $"Starting NFS mountd: "

	daemon rpc.mountd $RPCMOUNTDOPTS

	echo

	touch /var/lock/subsys/nfs

	# reset input queue for rest of network services

	if [ "$TUNE_QUEUE" = "yes" ]; then

	    /sbin/sysctl -w net.core.rmem_default=$RMEM_DEFAULT >/dev/null 2>&1

	    /sbin/sysctl -w net.core.rmem_max=$RMEM_MAX >/dev/null 2>&1

	fi

	;;

  stop)

	# Stop daemons.

	echo -n $"Shutting down NFS mountd: "

	killproc rpc.mountd

	echo

	echo -n $"Shutting down NFS daemon: "

	killproc nfsd

	echo

	if [ -n "$RQUOTAD" ]; then

		echo -n "Shutting down NFS quotas: "

		killproc rpc.rquotad

		echo

	fi

	# Do it the last so that clients can still access the server

	# when the server is running.

	action $"Shutting down NFS services: " /usr/sbin/exportfs -au

	rm -f /var/lock/subsys/nfs

	;;

  status)

	status rpc.mountd

	status nfsd

	if [ -n "$RQUOTAD" ]; then

		status rpc.rquotad

	fi

	;;

  restart)

	$0 stop

	$0 start

	;;

  reload)

	/usr/sbin/exportfs -r

	touch /var/lock/subsys/nfs

	;;

  probe)

	if [ ! -f /var/lock/subsys/nfs ] ; then

	  echo $"start"; exit 0

	fi

	/sbin/pidof rpc.mountd >/dev/null 2>&1; MOUNTD="$?"

	/sbin/pidof nfsd >/dev/null 2>&1; NFSD="$?"

	if [ $MOUNTD = 1 -o $NFSD = 1 ] ; then

	  echo $"restart"; exit 0

	fi

	if [ /etc/exports -nt /var/lock/subsys/nfs ] ; then

	  echo $"reload"; exit 0

	fi

	;;

  condrestart)

  	[ -f /var/lock/subsys/nfs ] && {

		$0 stop

		$0 start

	}

	;;

  *)

	echo $"Usage: nfs {start|stop|status|restart|reload|condrestart}"

	exit 1

esac

exit 0