grub.cfg

#!/bin/sh -x

# https://wiki.freebsd.org/RootOnZFS/GPTZFSBoot/9.0-RELEASE

# edit:
# disk device name
# parameters for your zpool type
# your pool name
# swap space

PARTITION=freebsd
POOL=z${PARTITION}
SWAP=$(echo $PARTITION | cut -b 1-1)swap
DRIVE=ada0
read TEST

sysctl kern.geom.debugflags=0x10
# gpart destroy -F ${DRIVE}
# gpart create  -s gpt ${DRIVE}
gpart delete -i 5 ${DRIVE}
gpart delete -i 6 ${DRIVE}
gpart delete -i 7 ${DRIVE}
read TEST

# leave 32k empty at the start of the drive to avoid conflicting with MBR
# gpart add -s 1M   -a 4k -t bios-boot    -l bboot -b 32k ${DRIVE}
# gpart add -s 512k -a 4k -t freebsd-boot -l fboot        ${DRIVE}
# gpart add -s 1M   -a 4k -t bios-boot    -l bboot        -b 1M ${DRIVE}
# gpart add -s  1g  -a 4k -t efi          -l efi          -b 1M ${DRIVE}

gpart add -s 512k -a 4k -t freebsd-boot -l fboot   -b 1M        ${DRIVE}
gpart add -s 100g -a 4k -t freebsd-zfs  -l ${PARTITION}         ${DRIVE}
gpart add         -a 4k -t freebsd-swap -l ${SWAP}              ${DRIVE}
read TEST
# gpart add -s 55g  -a 4k -t linux-data   -l linux              ${DRIVE}
# gpart add -s 10g  -a 4k -t linux-swap   -l lswap              ${DRIVE}
# gpart add -s 55g  -a 4k -t freebsd-zfs  -l pcbsd              ${DRIVE}
# gpart add -s 10g  -a 4k -t freebsd-swap -l pswap              ${DRIVE}

# gpart bootcode -b /boot/pmbr -p /boot/gptzfsboot -i 1 ${DRIVE}
# gpart set -a bootme -i 5 ${DRIVE}
gnop create -S 4096 /dev/gpt/${PARTITION}

kldload zfs
zpool create -d -f -o altroot=/mnt -O canmount=off -m none ${POOL} /dev/gpt/${PARTITION}.nop
read TEST

# set up efi boot partition after /mnt is defined
# newfs_msdos -F 16 -L esp /dev/${DRIVE}p1
# mkdir /mnt/efi
# mount -t msdosfs /dev/${DRIVE}p1 /mnt/efi
# mkdir -p /mnt/efi/freebsd/boot
# ln -s /mnt/efi/freebsd/boot boot

# continue setting up the zpool
FEATURES="async_destroy bookmarks embedded_data empty_bpobj hole_birth enabled_txg extensible_dataset filesystem_limits large_blocks lz4_compress multi_vdev_crash_dump sha512 skein spacemap_histogram"
# exclude these 2 incompatible features
# hole_birth embedded_data
# "zpool create -d" defaults all zfs features to disabled. Any desired features must be enabled below.
for f in $FEATURES; do
   case $f in
      'hole_birth')
         ;;
      'embedded_data')
         ;;
      *)
         zpool set feature@${f}=enabled ${POOL}
         ;;
   esac
done
read TEST
zpool get all ${POOL} | grep feature
read TEST

zfs set checksum=fletcher4                                           ${POOL}
zfs set atime=off                                                    ${POOL}

zfs create   -o mountpoint=none                                      ${POOL}/ROOT
zfs create   -o mountpoint=/                                         ${POOL}/ROOT/default
read TEST

zfs create   -o mountpoint=/tmp -o compression=lz4   -o setuid=off   ${POOL}/tmp
chmod 1777 /mnt/tmp

zfs create   -o mountpoint=/home                     -o setuid=off   ${POOL}/home

zfs create   -o mountpoint=/usr                                      ${POOL}/usr
read TEST
zfs create                                                           ${POOL}/usr/local
zfs create   -o compression=lz4                      -o setuid=off   ${POOL}/usr/ports
zfs create   -o compression=off      -o exec=off     -o setuid=off   ${POOL}/usr/ports/distfiles
zfs create   -o compression=off      -o exec=off     -o setuid=off   ${POOL}/usr/ports/packages
read TEST
zfs create   -o compression=lz4      -o exec=off     -o setuid=off   ${POOL}/usr/src
zfs create                                                           ${POOL}/usr/obj

zfs create   -o mountpoint=/var                                      ${POOL}/var
zfs create   -o compression=lz4      -o exec=off     -o setuid=off   ${POOL}/var/crash
zfs create                           -o exec=off     -o setuid=off   ${POOL}/var/db
read TEST
zfs create   -o compression=lz4      -o exec=on      -o setuid=off   ${POOL}/var/db/pkg
zfs create                           -o exec=off     -o setuid=off   ${POOL}/var/empty
zfs create   -o compression=lz4      -o exec=off     -o setuid=off   ${POOL}/var/log
read TEST
zfs create   -o compression=gzip     -o exec=off     -o setuid=off   ${POOL}/var/mail
zfs create                           -o exec=off     -o setuid=off   ${POOL}/var/run
zfs create   -o compression=lz4      -o exec=on      -o setuid=off   ${POOL}/var/tmp
chmod 1777 /mnt/var/tmp
read TEST

zpool set bootfs=${POOL}/ROOT/default ${POOL}
zpool set cachefile=/boot/zfs/zpool.cache ${POOL}
read TEST

cat << EOF > /tmp/bsdinstall_etc/fstab
# Device                       Mountpoint              FStype  Options         Dump    Pass #
/dev/diskid/DISK-S2R5NX0J132791Tp7              none                    swap    sw              0       0
EOF

exit