xref: /src/etc/rc.d/lvm

#!/bin/sh
#
# $NetBSD: lvm,v 1.1 2009/01/14 22:07:55 haad Exp $
#

# PROVIDE: disks

$_rc_subr_loaded . /etc/rc.subr

name="lvm"
rcvar=$name
start_cmd="lvm_start"
stop_cmd="lvm_stop"

dm_test()
{
    if [ -x /sbin/dmsetup ]; then
	/sbin/dmsetup version >/dev/null
	
	if [ $? -ne 0 ]; then 
	    echo "Device-mapper not present in kernel"
	    exit;
	fi
    fi
}

lvm_start()
{
        dm_test;

        if [ -x /sbin/lvm ]; then
                echo "Configuring lvm devices."

		# Scan for all available VG's
	        /sbin/lvm vgscan --mknodes --ignorelockingfailure >/dev/null
		
		# Activate all LV's and create apropriate nodes in /dev
		/sbin/lvm vgchange --ignorelockingfailure -a y >/dev/null
		
		echo "   Activated Volume Groups:"`/sbin/lvm vgdisplay -C -o vg_name --noheadings 2>/dev/null`
        fi
}

lvm_stop()
{
      dm_test;

      if [ -x /sbin/lvm ]; then
                echo "Deconfiguring lvm devices."

		LOGICAL_VOLUMES=`/sbin/lvm lvdisplay -C -o vg_name,lv_name -O vg_name --separator \/ --noheadings 2>/dev/null`
		VOLUME_GROUPS=`/sbin/lvm vgdisplay -C -o vg_name --separator " " --noheadings 2>/dev/null`

		for x in ${LOGICAL_VOLUMES}; do
		    IFS=":"
		    set -- `/sbin/lvm lvdisplay -c`
		    # The fourth argument in the column LV display is inkernel flag
		    LV_IS_ACTIVE=$4;
		    unset IFS

		    if [ ${LV_IS_ACTIVE} -eq 1 ]; then
			echo "  Shutting Down logical volume: ${x} "
			/sbin/lvm lvchange -an --ignorelockingfailure -P ${x} >/dev/null
		    fi
		done

		for x in ${VOLUME_GROUPS}; do
		    echo "VG -> |${x}|"
		    # Set IFS to field separator
		    IFS=":"
		    set -- `/sbin/lvm vgdisplay -cA ${x} 2>/dev/null`
		    # The seventh parameter is number of opened LVs in a Volume Group
		    VG_HAS_ACTIVE_LV=$7
		    unset IFS

		    if [ "${VG_HAS_ACTIVE_LV}" = 0 ]
		    then
			echo "  Shutting Down volume group: ${x}"
			/sbin/lvm vgchange -an --ignorelockingfailure -P ${x} >/dev/null
		    fi
		done
        fi
}

load_rc_config $name
run_rc_command "$1"