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      1 #!/bin/sh
      2 #
      3 # $NetBSD: lvm,v 1.8 2021/08/21 23:00:30 andvar Exp $
      4 #
      5 
      6 # PROVIDE: lvm
      7 # REQUIRE: root devpubd
      8 # BEFORE:  DISKS
      9 
     10 $_rc_subr_loaded . /etc/rc.subr
     11 
     12 name="lvm"
     13 rcvar=$name
     14 start_cmd="lvm_start"
     15 stop_cmd="lvm_stop"
     16 
     17 ifs_restore="$IFS";
     18 
     19 lvm_start()
     20 {
     21 	if [ -x /sbin/dmsetup ]; then
     22 		/sbin/dmsetup version >/dev/null
     23 		if [ $? -ne 0 ]; then
     24 			warn "Device-mapper not present in kernel"
     25 			return 1;
     26 		fi
     27 	fi
     28 
     29 	if [ -x /sbin/lvm ]; then
     30 		echo "Configuring lvm devices."
     31 
     32 		# Scan for all available VG's
     33 		/sbin/lvm vgscan --mknodes --ignorelockingfailure >/dev/null
     34 
     35 		# Activate all LV's and create appropriate nodes in /dev
     36 		/sbin/lvm vgchange --ignorelockingfailure -a y >/dev/null
     37 		LV_LIST=$(/sbin/lvm vgdisplay -C -o vg_name --noheadings 2>/dev/null)
     38 		echo " Activated Volume Groups:" $LV_LIST
     39 	fi
     40 }
     41 
     42 lvm_stop()
     43 {
     44 	if [ -x /sbin/dmsetup ]; then
     45 		/sbin/dmsetup version >/dev/null
     46 		if [ $? -ne 0 ]; then
     47 			warn "Device-mapper not present in kernel"
     48 			return 1;
     49 		fi
     50 	fi
     51 
     52 	if [ -x /sbin/lvm ]; then
     53 		echo "Unconfiguring lvm devices."
     54 
     55 		LOGICAL_VOLUMES=$(/sbin/lvm lvdisplay -C -o vg_name,lv_name \
     56 			-O vg_name --separator \/ --noheadings 2>/dev/null)
     57 		VOLUME_GROUPS=$(/sbin/lvm vgdisplay -C -o vg_name \
     58 			--separator " " --noheadings 2>/dev/null)
     59 
     60 		for lv in ${LOGICAL_VOLUMES}; do
     61 			LV_IS_ACTIVE=$(/sbin/lvm lvdisplay -C --noheadings \
     62 				-o lv_attr $lv)
     63 			case $LV_IS_ACTIVE in
     64 			*a*)
     65 				echo "  Shutting Down logical volume: ${lv}"
     66 				/sbin/lvm lvchange -an --ignorelockingfailure \
     67 					-P ${lv} >/dev/null
     68 				;;
     69 			esac
     70 		done
     71 
     72 		for vg in ${VOLUME_GROUPS}; do
     73 			# Set IFS to field separator
     74 			IFS=":"
     75 			set -- $(/sbin/lvm vgdisplay -cA ${vg} 2>/dev/null)
     76 			# The seventh parameter is number of opened LVs in a Volume Group
     77 			VG_HAS_ACTIVE_LV=$7
     78 			IFS="$ifs_restore";
     79 
     80 			if [ "${VG_HAS_ACTIVE_LV}" = 0 ]; then
     81 				echo "  Shutting Down volume group: ${vg}"
     82 				/sbin/lvm vgchange -an --ignorelockingfailure \
     83 					-P ${vg} >/dev/null
     84 			fi
     85 		done
     86 	fi
     87 }
     88 
     89 load_rc_config $name
     90 run_rc_command "$1"
     91