FreeNAS Minnowboard deployment using FreeBSD's loader.

minnow-freenas.sh

#!/usr/local/bin/bash
FREENAS_ISO=$1
FREEBSD_ISO=$2
DEST=$3

if [ -z "$1" ] || [ -z "$2" ] || [ -z "$3" ]; then
    echo "usage: $0 [FreeNAS ISO file] [FreeBSD skeleton image] [target drive]"
    exit 1
fi

echo
gpart show $DEST
read -p "Continuing will nuke ${DEST}.  Are you sure? " -n 1 -r
echo
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
    exit 1
fi

function cleanup {
    if mount | grep "/mnt/freenas_iso" > /dev/null; then
        echo "unmounting /mnt/freenas_iso..."
        umount /mnt/freenas_iso
        mdconfig -d -u 1
    fi
    if mount | grep "/mnt/freenas_usb" > /dev/null; then
        echo "unmounting /mnt/freenas_usb..."
        umount /mnt/freenas_usb
    fi
    if [ -e "/mnt/freenas_iso" ]; then
        rm -rf /mnt/freenas_iso
    fi
    if [ -e "/mnt/freenas_usb" ]; then
        rm -rf /mnt/freenas_usb
    fi
}

cleanup
trap cleanup EXIT

# mount source freenas ISO
echo "mounting FreeNAS ISO..."
mkdir /mnt/freenas_iso
mdconfig -a -t vnode -f $FREENAS_ISO -u 1
mount -t cd9660 /dev/md1 /mnt/freenas_iso

# clone freebsd skeleton image
echo "cloning FreeBSD skeleton image to drive..."
dd if=$FREEBSD_ISO of=$DEST bs=1m conv=sync 

# copy root filesystem to target drive
mkdir /mnt/freenas_usb
mount -t ufs ${DEST}p3 /mnt/freenas_usb
echo "copying FreeNAS root filesystem..."
cp -a /mnt/freenas_iso/. /mnt/freenas_usb/
rm -rf /mnt/freenas_usb/boot/grub /mnt/freenas_usb/boot/loader.conf /mnt/freenas_usb/boot/device.hints
echo "extracting /boot..."
tar -xpzvf ./boot.tar.gz -C /mnt/freenas_usb/