21.01 ZFS ​

# Setup a 8-letter hexadecimal hostid (I like a bad food xD)
zgenhostid -f abadf00d

# Cleanup the disk
# blkdiscard is zero-write most-efficient disk clearing method
zpool labelclear -f /dev/nvme0n1 || true
blkdiscard -f /dev/nvme0n1 || sgdisk -go /dev/nvme0n1

# Create partitions (boot, swap, zfs root)
sgdisk -n 1:1m:+550m -t 1:ef00 /dev/nvme0n1
sgdisk -L | grep ef00         # ef00 EFI system partition
sgdisk -L | grep -i swap      # 8200 Linux swap
sgdisk -n 2:0:+8G -t 2:8200 /dev/nvme0n1
sgdisk -L | grep -i bf00      # bf00 Solaris root
sgdisk -n 3:0:0 -t 3:bf00 /dev/nvme0n1

mkfs.vfat /dev/nvme0n1p1
mkswap /dev/nvme0n1p2
swapon /dev/nvme0n1p2

# Create a new dataset (zroot)
man zpool-create
man zfsprops
man zpoolprops

zpool create -f -o ashift=12 -O acltype=posixacl -O atime=off -O compression=lz4 -O xattr=sa -O canmount=off -m none zroot /dev/nvme0n1p3

# Create subvolumes in the dataset (zroot/ROOT, zroot/DATA)
man zfs

zfs create -o canmount=off -o mountpoint=none zroot/ROOT
zfs create -o canmount=noauto -o mountpoint=/ zroot/ROOT/void
zfs create -o canmount=off -o mountpoint=none zroot/DATA
zfs create -o mountpoint=/home zroot/DATA/home

zpool set bootfs=zroot/ROOT/void zroot

zfs export zroot
zpool import -N -R /mnt zroot
zfs mount zroot/ROOT/void
zfs mount zroot/DATA/home
udevadm trigger    # force kernel to re-read mount info (optional)

mkdir -p /mnt/boot/efi
mount /dev/nvme0n1p1 /mnt/boot/efi

# Ensure everything is well-n-good
mount | grep mnt

# <connect to internet>
ln -s /etc/sv/dbus /var/service
ln -s /etc/sv/iwd /var/service
ln -s /etc/sv/dhcpcd /var/service
iwctl station wlan0 scan
iwctl station wlan0 connect V2040

XBPS_ARCH=x86_64 xbps-install -S -R https://mirrors.dotsrc.org/voidlinux/current -r /mnt base-system zfs zfsbootmenu linux-headers linux5.18 linux5.18-headers iwd neovim linux-firmware-intel mesa-dri vulkan-loader mesa-vulkan-intel intel-video-accel xf86-video-intel efibootmgr gummiboot-efistub

mkdir -p /mnt/etc/zfs
zpool set cachefile=/etc/zfs/zpool.cache zroot

echo framework > /mnt/etc/hostname
cp /etc/hostid /mnt/etc/hostid
cp /etc/zfs/zpool.cache /mnt/etc/zfs/zpool.cache

# Set keyboard layout & timezone
nvim /mnt/etc/rc.conf
ln -sf /usr/share/zoneinfo/Asia/Kolkata /mnt/etc/localtime

# Setup dracut
cat << EOF > /etc/dracut.conf.d/zol.conf
nofsck="yes"
add_dracutmodules+=" zfs "
omit_dracutmodules+=" btrfs "
EOF

zfs set org.zfsbootmenu:commandline="loglevel=4 acpi_osi='Windows 2020' net.ifnames=0 i915.enable_psr=1 intel_pstate=disable nvme.noacpi=1" zroot/ROOT  # setting on ROOT makes all children inherit the property (useful in multi-boot)

# Generate locales
sed -i '/en_US/s/^#//' /mnt/etc/default/libc-locales
sed -i 's/LANG=.*/LANG=en_US.UTF-8/' /mnt/etc/locale.conf
xchroot /mnt xbps-reconfigure -f glibc-locales

# Add user
xchroot /mnt useradd -m animesh -G network,wheel,video,audio,input
xchroot /mnt chown -R animesh:animesh /home/animesh
xchroot /mnt passwd animesh
sed -i '/%wheel ALL=(ALL:ALL) ALL/s/^#//' /etc/sudoers

# Add mountpoints
blkid
echo "$(blkid | grep nvme0n1p1 | cut -d' ' -f2) /boot/efi vfat defaults 0 0" >> /mnt/etc/fstab
echo "$(blkid | grep nvme0n1p2 | cut -d' ' -f2) none swap defaults 0 0" >> /mnt/etc/fstab

# Configure ZFSBootMenu
cat << EOF > /etc/zfsbootmenu/config.yaml
Global:
  ManageImages: true
  BootMountPoint: /boot/efi
  DracutConfDir: /etc/zfsbootmenu/dracut.conf.d
  PreHooksDir: /etc/zfsbootmenu/generate-zbm.pre.d
  PostHooksDir: /etc/zfsbootmenu/generate-zbm.post.d
  InitCPIOConfig: /etc/zfsbootmenu/mkinitcpio.conf
Components:
  Enabled: false
EFI:
  ImageDir: /boot/efi/EFI/zbm
  Versions: false
  Enabled: true
Kernel:
  CommandLine: loglevel=4 acpi_osi='Windows 2020' net.ifnames=0 i915.enable_psr=1 intel_pstate=disable nvme.noacpi=1
EOF

xchroot /mnt xbps-reconfigure -fa

# Generate EFI entries for booting
man efibootmgr
xchroot /mnt efibootmgr --create --disk /dev/nvme0n1 --part 1 -L "ZFSBootMenu (Backup)" --loader \\EFI\\zbm\\vmlinuz-backup.efi
xchroot /mnt efibootmgr --create --disk /dev/nvme0n1 --part 1 -L "ZFSBootMenu" --loader \\EFI\\zbm\\vmlinuz.efi

umount -n -R /mnt
zpool export zroot
reboot