1#!/bin/sh
2# $FreeBSD$
3
4# some default sizes
5align=2048
6swapsize=$(expr 1 \* 1024 \* 2048 + 1024)
7zfssize=0
8
9# define our bail out shortcut
10exerr () { echo -e "$*" >&2 ; exit 1; }
11
12usage="Usage: $0 <dsk> [ -s <swap size> ] [ -z <zfs size> ]\n\
13	\tswap size: if no -s size in blocks is given, default is $swapsize blocks\n\
14	\tzfs size: if no -z size in blocks is given, default is the rest of the disk"
15
16dsk=$1
17if [ -z "$dsk" -o \! -c "/dev/$dsk" ]; then
18  exerr ${usage};
19  exit;
20fi
21
22shift; while getopts :s:z: arg; do case ${arg} in
23  s) swapsize=${OPTARG};;
24  z) zfssize=${OPTARG};;                                                                                                               
25  #?) exerr ${usage};;                                                                                                      
26esac; done; shift $(( ${OPTIND} - 1 ))                                                                                                
27 
28gpart destroy -F $dsk
29gpart create -s gpt $dsk
30
31# Boot
32siz=$(expr 1024 \- 34)
33gpart add -i 1 -b 34 -s $siz -t freebsd-boot $dsk
34gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 $dsk
35
36# Swap
37off=$align
38siz=$swapsize
39gpart add -i 2 -b $off -s $siz -t freebsd-swap $dsk
40
41# ZFS
42off=$(expr $align + $swapsize)
43if [ "$zfssize" -gt 0 ]; then
44  siz="-s $zfssize"
45else
46  siz=""
47fi
48gpart add -i 3 -b $off $siz -t freebsd-zfs $dsk
49
50gpart show $dsk
51