#!/bin/sh
#
# blkmapd	Start up and shut down pNFS block layout mapping daemon
#
# chkconfig:	345 13 82
# description:	Starts the blkmapd daemon that performs device discovery \
#		and mapping for the parallel NFS (pNFS) block layout \
#		client [RFC5663].

# Source function library.
. /etc/rc.d/init.d/functions

# Get network config
. /etc/sysconfig/network

# Check that networking is up.
if is_yes "${NETWORKING}"; then
	if [ ! -f /var/lock/subsys/network -a "$1" != stop -a "$1" != status ]; then
		msg_network_down "pNFS block layout mapping daemon"
		exit 1
	fi
else
	exit 0
fi

# Get service config
[ -f /etc/sysconfig/nfsfs ] && . /etc/sysconfig/nfsfs

is_yes "${ENABLE_PNFS}" || exit 0

start() {
	# Check if the service is already running?
	if [ -f /var/lock/subsys/blkmapd ]; then
		msg_already_running "pNFS block layout mapping daemon"
		return
	fi

	if ! grep -q rpc_pipefs /proc/mounts; then
		modprobe sunrpc >/dev/null 2>&1
		run_cmd "Mounting /var/lib/nfs/rpc_pipefs filesystem" \
			mount -t rpc_pipefs rpc_pipefs /var/lib/nfs/rpc_pipefs
	fi
	msg_starting "pNFS block layout mapping daemon"
	daemon /sbin/blkmapd $BLKMAPDOPTIONS
	RETVAL=$?
	[ $RETVAL = 0 ] && touch /var/lock/subsys/blkmapd
}

stop() {
	if [ ! -f /var/lock/subsys/blkmapd ]; then
		msg_not_running "pNFS block layout mapping daemon"
		return
	fi

	msg_stopping "pNFS block layout mapping daemon"
	killproc blkmapd
	rm -f /var/lock/subsys/blkmapd
}

# See how we were called.
RETVAL=0
case "$1" in
  start)
  	start
	;;
  stop)
  	stop
	;;
  restart|reload)
	stop
	start
	;;
  status)
	status blkmapd
	RETVAL=$?
	;;
  *)
	msg_usage "$0 {start|stop|restart|status}"
	exit 1
esac

exit $RETVAL