legacy_find_root_device ()

{

  mount_point=$1

  # Autodetect current root device

  device=

  if [ -f /etc/fstab ] ; then

    device="`awk '$1!~/^#/{

      if ($2 ~ "^/+$") { $2 = "/"; } else { sub("/*$", "", $2); }

      if ($2 == "'"$mount_point"'"){

        print $1;

      }

    }' /etc/fstab | tail -n 1`"

  fi

  if [ -n "$device" ] ; then

    case "$device" in

      LABEL=* | UUID=*)

        device="`findfs $device`"

	device="`readlink -f "$device"`"

      ;;

      *)

        device=`readlink -f "$device"`

      ;;

    esac

  fi

  echo $device

}

legacy_convert_to_uuid()

{

  echo "Cannot determine uuid of root device.  Trying legacy probe method" >&2

  local dev; dev="$1"

  convert=false

  case "$dev" in

    /dev/disk/*)

      ;;

    /dev/mapper/*)

      ;;

    /dev/evms/[hs]d[a-z][0-9]*)

      convert=:

      ;;

    /dev/evms/*)

      ;;

    /dev/md[0-9]*)

      ;;

    /dev/*)

      convert=:

      ;;

  esac

  if $convert; then

    if [ -b "$dev" ]; then

      uuid="`blkid -o value -s UUID "$dev" || true`"

    fi

  fi

  echo "$uuid"

}