installation of manjaro zfs root

manjaro-zfs-root.bash

#!/bin/bash
# ===================================
# Origianly from https://forum.manjaro.org/t/solved-manjaro-16-06-01-zfs-root-installation-problem/4469
# ===================================

loadkeys us
systemctl enable --now systemd-timesyncd
pacman-mirrors --api --set-branch unstable --url http://ftp.cuhk.edu.hk/pub/Linux/manjaro

# ===================================
# Installed the system onto an USB drive, then
# ===================================
pacman -Sy archlinux-keyring manjaro-keyring manjarozfs zfs linux54-zfs
# pacman -Syy archlinux-keyring manjaro-keyring manjarozfs zfs mc rsync linux-headers manjaro-tools arch-install-scripts linux54-zfs
pacman-key --init
pacman-key --populate archlinux manjaro
pacman-key --refresh-keys

modprobe zfs

read -n 1
      
      
# sfdisk -d /dev/nvme01 > nvme01.sfdisk
# sudo sfdisk /dev/sdX < sda.sfdisk
# ===================================
# Partition editing (way 1)
# ===================================

#Part     Size   Type
# ----     ----   -------------------------
#   1       2M   BIOS boot partition (ef02)
#   2     108M   ext2 (bf00)
#   3     XXXG   Solaris Root (bf00)
   
# | # to Refresh the kernel's view of the partition table.
# | partx -u /dev/nvme01p01
# | # clear end of disk if needed
# | dd if=/dev/zero bs=512 seek=$((... - 1024)) of=/dev/sda
# | # to clear zfs labels
# | zpool labelclear [-f] /dev/sda

# clear partition table
# sgdisk --zap-all /dev/nvme01

# create partition table
# parted /dev/nvme01
# (parted)unit MiB
# (parted)mklabel gpt
# (parted)mkpart non-fs 1 3
# (parted)mkpart primary 3 103
# (parted)mkpart primary 103 100%
# (parted)set 1 bios_grub on
# (parted)set 3 boot on
# (parted)quit

# ===================================
# ZPOOL Create
# ===================================

zpool create -f -o ashift=12 -O acltype=posixacl -O canmount=off -O compression=lz4 -O dnodesize=auto -O normalization=formD -O relatime=on -O xattr=sa -O encryption=aes-256-gcm -O keylocation=prompt -O keyformat=passphrase pumpkin /dev/nvme0n1p2

zfs create -o mountpoint=none zroot/DATA
zfs create -o mountpoint=none zroot/ROOT
zfs create -o compression=lz4 -o mountpoint=/ zroot/ROOT/manjaro
zfs create -o compression=lz4 -o mountpoint=/home zroot/DATA/home

zfs umount -a
zfs set mountpoint=/ zroot/ROOT/manjaro
zfs set mountpoint=legacy zroot/DATA/home


# ===================================
# SWAP
# ===================================

zfs create -V 3G -b $(getconf PAGESIZE) -o compression=off -o primarycache=metadata -o secondarycache=none -o sync=always -o com.sun:auto-snapshot=false zroot/swap
mkswap /dev/zvol/zroot/swap

# ===================================
# ZPOOL POST
# ===================================

zpool set bootfs=zroot/ROOT/manjaro zroot
zpool export zroot
zpool import -d /dev/nvmw0n1p2 -R /mnt zroot -l

# ! Can not import more than one mathcing names
# ! import by numeric ID instead
# ! do this
# ! zpool labelclear [-f] /dev/sda
# ! repeat previous

zpool set cachefile=/etc/zfs/zpool.cache zroot

# ===================================
# BOOT PARTITION
# ===================================

mkfs.fat -F 32 /dev/nvme0n1p1
mkdir -p /mnt/boot
mkdir -p /mnt/boot/efi
mount /dev/nvme0n1p1 /mnt/boot

# ===================================
# INSTALL PACSTRAP
# ===================================

# pacstrap -i /mnt manjaro-system mc manjarozfs zfs manjaro-tools
basestrap /mnt base linux56 linux56-zfs systemd-boot-manager manjaro-zsh-config dhcpcd networkmanager grub mkinitcpio efibootmgr vi nano sudo links
genfstab -U /mnt >> /mnt/etc/fstab
# edited /mnt/etc/fstab (removed the zpool drives)
# add to fstab:
# zroot/DATA/home         /home           zfs             rw,auto         0 0
cp /etc/zfs/zpool.cache /mnt/etc/zfs/zpool.cache

# ===================================
# CHANGE ROOT
# ===================================

manjaro-chroot /mnt /bin/bash
export PS1="(ZFS root) $PS1"
# from the chroot
pacman -Syu
pacman -S file diffutils rxvt-unicode
pacman -S emacs
pacman -S manjarozfs zfs mc rsync linux-headers manjaro-tools arch-install-scripts grub linux56-zfs
# edited the mkinitcpio hooks: "…block keyboard zfs filesystems,"

# | IF FINISH THIS DOC THEN 
# | AFTER REBOOT GRUB ZFS IMPORT SHOWS ERROR
# | "libgcc_s.so.1 must be installed for pthread_cancel to work"
# | TO SOLVE PUT
# | FILES=("/usr/lib/libgcc_s.so.1")
# | into /etc/mkinitcpio.conf
# | then running mkinicpio -p linux
# | to test result
# | lsinitcpio /boot/initramfs-linux.img | grep gcc
# | usr/lib/libgcc_s.so.1

echo pumpkin > /etc/hostname
chsh -s /bin/zsh
ln -sf /usr/share/zoneinfo/Asia/Hong_kong /etc/localtime
hwclock --systohc

systemctl enable NetworkManager
systemctl enable systemd-timesyncd

echo LANG=en_US.UTF-8 > /etc/locale.conf



emacs -nw /etc/mkinitcpio.conf
systemctl enable zfs.target
modprobe zfs
echo options zfs zfs_arc_min=268435456 >> /etc/modprobe.d/zfs.conf
echo options zfs zfs_arc_max=1073741824 >> /etc/modprobe.d/zfs.conf
passwd


# build kernel
mkinitcpio -P linux56

# went without any error:

# ===================================
# SD Boot INSTALL
# ===================================

bootctl --path=/boot install
sdboot-manage gen

## grub-install --target=i386-pc --boot-directory=/boot --recheck --debug --force /dev/sda
# failed to find the caninical drive: 
# BE SURE YOU ARE IN CHANGE ROOT!!!!! 
## update-grub
# after the link, it was created the config without any problem:
## ln -s /dev/sda3 /dev/ata-Maxtor_6B300S0_B60TP9WH-part3
# changing the grub.cfg
# 'root=ZFS=Zroo’t\ was changed to ‘zfs=zrooz’
## sed -i -e 's/root=ZFS=zroot\//zfs=zroot/g' /boot/grub/grub.cfg
# needed a link because of the grub
## ln -s /dev/sda3 /dev/ata-Maxtor_6B300S0_B60TP9WH-part3
## update-grub

# edit /etc/defaults/grub
## emacs -nw /etc/defaults/grub
## GRUB_GFXPAYLOAD_LINUX=keep
# Boot with systemd instead of sysvinit (openrc)
## GRUB_CMDLINE_LINUX="init=/lib/systemd/systemd dozfs=force zfsforce=yes"
#GRUB_CMDLINE_LINUX="init=/sbin/init dozfs=force dozfs=force zfsforce=yes"

# ===================================
# TO REBOOT
# ===================================

exit
sudo umount /mnt/boot
sudo zfs umount -a
sudo zpool export zroot
sudo reboot

# ===================================
# POSTINSTALL
# ===================================

# initialy pacman compile in /tmp
# which is in emory, and there will not be enought space
sudo emacs -nw /etc/makepkg.conf
# edit text
BUILDDIR=/var/tmp/makepkg

# swap
sudo mkswap /dev/zvol/zroot/swap
> Setting up swapspace version 1, size = 3 GiB (3221221376 bytes)
> no label, UUID=0d9a89c0-7434-4414-9f3a-a10006998ea5
# enable it
swapon /dev/zvol/zroot/swap
# edit fstab
# swap
##UUID=0d9a89c0-7434-4414-9f3a-a10006998ea5       none    swap sw 0 0