#!/sbin/runscript
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/sys-fs/lvm2/files/clvmd.rc-2.02.28-r3,v 1.1 2007/11/16 08:05:01 robbat2 Exp $

depend() {
	use dns logger
	use net
	need cluster-manager cluster-locking-manager fenced
}

exefile=/sbin/clvmd

umount_gfs_filesystems() {
	local sig retry
	local remaining="$(awk '$3 == "gfs" { print $2 }' /proc/mounts | sort -r)"

	if [ -n "${remaining}" ]
	then
	        sig=
	        retry=3
	        while [ -n "${remaining}" -a "${retry}" -gt 0 ]
	        do
	                if [ "${retry}" -lt 3 ]
			then
	                        ebegin "Unmounting GFS filesystems (retry)"
	                        umount ${remaining} &>/dev/null
	                        eend $? "Failed to unmount GFS filesystems this retry"
	                else
	                        ebegin "Unmounting GFS filesystems"
	                        umount ${remaining} &>/dev/null
	                        eend $? "Failed to unmount GFS filesystems"
	                fi
	                remaining="$(awk '$3 == "gfs" { print $2 }' /proc/mounts | sort -r)"
	                [ -z "${remaining}" ] && break
	                /bin/fuser -k -m ${sig} ${remaining} &>/dev/null
	                sleep 5
	                retry=$((${retry} -1))
	                sig=-9
	        done
	fi
}



start() {
	if [ -e /proc/modules -a ! -e /dev/device-mapper ] ; then
		ebegin "Loading device-mapper module"
		modprobe -q dm-mod
		eend $?
	fi
	if [ ! -e /dev/device-mapper ]; then
		eerror "device-mapper not available!"
		exit 1
	fi

	ebegin "Starting clvmd"
	start-stop-daemon --start --quiet --exec ${exefile}
	rc=$?
	eend $rc

	ebegin "Scanning LVM volumes"
	/sbin/vgscan &>/dev/null
	rc=$?
	eend $rc
	
	if [ "$rc" -eq 0 ] && [ -x /sbin/vgchange ] && [ -d /etc/lvm ]
	then
		ebegin "Setting up the Logical Volume Manager"
		/sbin/vgchange -aly >/dev/null
		eend $? "Failed to setup the LVM"
	fi
	
}

stop() {
	# umount GFS filesystems
	umount_gfs_filesystems

	# This sucks majorly. We need to find a way to only take out the CLUSTER
	# VGs and LVs, and never the local ones.
	einfo "Shutting down the Logical Volume Manager"

	LOGICAL_VOLUMES=`lvdisplay |grep "LV Name"|awk '{print $3}'|sort|xargs echo`
	VOLUME_GROUPS=`vgdisplay |grep "VG Name"|awk '{print $3}'|sort|xargs echo`
	for x in ${LOGICAL_VOLUMES}
	do
		LV_IS_ACTIVE=`lvdisplay ${x}|grep "# open"|awk '{print $3}'`
		if [ "${LV_IS_ACTIVE}" = 0 ]
		then
			ebegin "  Shutting Down logical volume: ${x} "
			lvchange -an --ignorelockingfailure -P ${x} >/dev/null
			eend $?
		fi
	done

	for x in ${VOLUME_GROUPS}
	do
		VG_HAS_ACTIVE_LV=`vgdisplay ${x}|grep "Open LV"|awk '{print $3}'|xargs echo`
		if [ "${VG_HAS_ACTIVE_LV}" = 0 ]
		then
			ebegin "  Shutting Down volume group: ${x} "
			vgchange -an --ignorelockingfailure -P ${x} >/dev/null
			eend
		fi
	done

	for x in ${LOGICAL_VOLUMES}
	do
		LV_IS_ACTIVE=`lvdisplay ${x}|grep "# open"|awk '{print $3}'`
		if [ "${LV_IS_ACTIVE}" = 1 ]
		then
			
			ROOT_DEVICE=`mount|grep " / "|awk '{print $1}'`
			if [ ! ${ROOT_DEVICE} = ${x} ]
			then
				ewarn "  Unable to shutdown: ${x} "
			fi
		fi
	done
	einfo "Finished Shutting down the Logical Volume Manager"	

	ebegin "Stopping clvmd"
	start-stop-daemon --stop --quiet --exec ${exefile}
	eend $?
}