#!/bin/ksh93

# License: CDDL 1.0
# Copyright (C) 2012 , Jens Elkner.

Usage() {
	BN=`basename $0`
	printf 'Usage: %s [-h] guid

  List the ZFS treed an mark the device wth the given hex guid with a "===>".

Options:
  -h   .. print this help and exit
  guid .. vdev number (guid as hex) as shown in "fmdump -v"

Example:
  %s c48108557eb8fd2c
' "$BN" "$BN"
}

while getopts "h:(help)" option ; do
	case "$option" in
		h) Usage ; exit 0 ;;
	esac
done

IDX=$(($OPTIND-1))
shift $IDX

VDEV="$1"
[[ -z "$VDEV" ]] && Usage && exit 1
typeset -u HEX=$VDEV
GUID=`echo "16i $HEX p" | dc`
zdb | sed -e "/guid=$GUID/ s,^    ,===>,"