#!/bin/bash
#
# lustrefs      Mount Lustre filesystems.
#
# Authors:      Jacob Berkman <jacob@clusterfs.com>
#
# Based on the netfs script:
#
# Authors:	Bill Nottingham <notting@redhat.com>
# 		Miquel van Smoorenburg, <miquels@drinkel.nl.mugnet.org>
#
# chkconfig: 345 26 74
# description: Mounts and unmounts all Lustre mount points.
#
### BEGIN INIT INFO
# Provides: $local_fs $remote_fs
### END INIT INFO

[ -f /etc/sysconfig/network ] || exit 0
. /etc/init.d/functions
. /etc/sysconfig/network

# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 0

LUSTREFSTAB=`LC_ALL=C awk '!/^#/ && $3 == "lustre" && $4 !~ /noauto/ { print $2 }' /etc/fstab`
LUSTREMTAB=`LC_ALL=C awk '!/^#/ && $3 == "lustre" { print $2 }' /proc/mounts`

# See how we were called.
case "$1" in
  start)
	[ -n "$LUSTREFSTAB" ] && action $"Mounting Lustre filesystems: " mount -a -t lustre
	touch /var/lock/subsys/lustrefs
	;;
  stop)
  	[ -n "$LUSTREMTAB" ] && {
		sig=
		retry=3
		remaining=`LC_ALL=C awk '!/^#/ && $3 ~ /^lustre/ && $2 != "/" {print $2}' /proc/mounts`
		while [ -n "$remaining" -a "$retry" -gt 0 ]
		do
			if [ "$retry" -lt 3 ]; then
				action $"Unmounting Lustre filesystems (retry): " umount -f -a -t lustre
			else
				action $"Unmounting Lustre filesystems: " umount -a -t lustre
			fi
			sleep 2
			remaining=`LC_ALL=C awk '!/^#/ && $3 ~ /^lustre/ && $2 != "/" {print $2}' /proc/mounts`
			[ -z "$remaining" ] && break
			/sbin/fuser -k -m $sig $remaining >/dev/null
			sleep 5
			retry=$(($retry - 1))
			sig=-9
		done
	}
	rm -f /var/lock/subsys/lustrefs
	;;
  status)
	if [ -f /proc/mounts ] ; then
		[ -n "$LUSTREFSTAB" ] && {
		      echo $"Configured Lustre mountpoints: "
		      for fs in $LUSTREFSTAB; do echo $fs ; done
		}
		[ -n "$LUSTREMTAB" ] && {
                      echo $"Active Lustre mountpoints: "
		      for fs in $LUSTREMTAB; do echo $fs ; done
		}
	else
		echo $"/proc filesystem unavailable"
	fi
	;;
  restart)
	$0 stop
	$0 start
	;;
  reload)
        $0 start
	;;
  *)
	echo $"Usage: $0 {start|stop|restart|reload|status}"
	exit 1
esac

exit 0