#!/bin/sh

if $UDEV_QUEUE_EMPTY >/dev/null 2>&1; then
    [ -h "$job" ] && rm -f "$job"
    # run lvm scan if udev has settled

    VGS=$(getargs rd_LVM_VG=)

    [ -d /etc/lvm ] || mkdir -p /etc/lvm
    # build a list of devices to scan
    lvmdevs=$(
	for f in /tmp/.lvm_scan-*; do
	    [ -e "$f" ] || continue
	    echo -n "${f##/tmp/.lvm_scan-} "
	done
	)

    if [ ! -e /etc/lvm/lvm.conf ]; then 
        {
	    echo 'devices {';
	    echo -n '    filter = [ '
	    for dev in $lvmdevs; do
		printf '"a|^/dev/%s$|", ' $dev;
	    done;
	    echo '"r/.*/" ]';
	    echo 'types = [ "blkext", 1024 ]'
	    echo '}';	  
        } > /etc/lvm/lvm.conf
	lvmwritten=1
    fi
    info "Scanning devices $lvmdevs for LVM volume groups $VGS"
    lvm vgscan 2>&1 | vinfo
    lvm vgchange -ay $VGS 2>&1 | vinfo
    [ "$lvmwritten" ] && rm -f /etc/lvm/lvm.conf
    unset lvmwritten
fi