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--- computers:linux:arch-zfs-install [2025/08/31 10:56] – wikiadmin
+++ computers:linux:arch-zfs-install [2025/09/06 11:30] (current) – wikiadmin
@@ Line 1: / Line 1: @@
-===== Install arch linux with zfs root =====
+ ===== Install arch linux with zfs root =====
   - Obtain latest ISO from archlinux.org and burn it to an ISO
   - Boot up and change / size  \
@@ Line 7: / Line 9: @@
     - <code>curl -s https://archzfs.leibelt.de/media/setup/init | bash</code>
     - <code>zgenhostid -f 0x00bab10c</code>
-  - Create zfs pool
+  - Partition Disk(s)
-  - Create file systems
+    - Create EFI partition<code>sgdisk -n "1:1m:+512m" -t "1:ef00" /dev/sda</code>
-  - Export/Import pool and mount file systems
+    - I suggest a swap partition large enough to hold RAM (my system has 16g) contents if you intend to use hibernate<code>sgdisk -n "2:0:+16g" -t "2:8200" /dev/sda</code>
-  - Install the system
+    - Allocate the remainder to the ZFS pool<code>sgdisk -n "3:0:-10m" -t "3:bf00" /dev/sda</code>
-    - <code>pacstrap /mnt linux linux-headers linux-firmware base vim amd-ucode networkmanager sudo openssh rsync</code>
+  - Create the ZFS pool
+    - I suggest using the partition UUID for the device name.<code>
+root@archiso ~ # ls -l /dev/disk/by-partuuid|grep sda3
+lrwxrwxrwx 1 root root 10 Sep  2 10:21 1aea6cc8-8333-4d5c-a9e6-e0a51296391d -> ../../sda3
+</code>
+    - We will be using [[https://zfsbootmenu.org|zfsbootmenu]] which is currently using OpenZFS 2.3<code>
+zpool create -f -o ashift=12 \
+ -O compression=lz4 \
+ -O acltype=posixacl \
+ -O xattr=sa \
+ -O relatime=on \
+ -o autotrim=on \
+ -o compatibility=openzfs-2.3-linux \
+ -m none zroot /dev/disk/by-partuuid/1aea6cc8-8333-4d5c-a9e6-e0a51296391d
+</code>
+  - Export / Import the ZFS pool<code>zpool export zroot && zpool import -NR /mnt zroot</code>
+  - Create the ZFS file systems including the home directory for the normal user account.<code>
+zfs create -o mountpoint=none zroot/ROOT
+zfs create -o mountpoint=/ -o canmount=noauto zroot/ROOT/arch
+zfs mount zroot/ROOT/arch
+zfs mount
+zroot/ROOT/arch                 /mnt
+</code>
+  - Set up EFI and swap partitions<code>
+mkfs.vfat -F32 /dev/sda1
+mkswap /dev/sda2</code>
+  - Install the system<code>pacstrap /mnt linux linux-headers linux-firmware base vim amd-ucode networkmanager sudo openssh rsync</code>
+  - Populate the fstab<code>
+echo "$(blkid /dev/sda1|cut -d\  -f2) /boot/efi vfat defaults 0 2" >> /mnt/etc/fstab
+echo "$(blkid /dev/sda2|cut -d\  -f2) none swap defaults 0 0" >> /mnt/etc/fstab</code>
   - Move into the install
     - <code>arch-chroot /mnt</code>
@@ Line 20: / Line 52: @@
 locale-gen
 echo "LANG=en_US.UTF-8" > /etc/locale.conf</code>
-    - vconsole
+    - vconsole<code>echo -e "KEYMAP=us\n#FONT=latarcyrheb-sun32" > /etc/vconsole.conf</code>
-      - <code>echo -e "KEYMAP=us\n#FONT=latarcyrheb-sun32" > /etc/vconsole.conf</code>
+    - hostname/hosts<code>echo tas > /etc/hostname</code>
-    - hostname/hosts
-      - <code>echo tas > /etc/hostname</code>
     - set root password<code>passwd root</code>
-  - Create a normal user and add to sudoers/wheel group
+  - Create a normal user and add to sudoers/wheel group<code>useradd -G wheel some_user
-    - useradd -G wheel some_user
+passwd some_user
-    - passwd some_user
+mkdir -p ~some_user && chown some_user ~some_user</code>
-    - visudo to allow wheel group to sudo
+    - edit sudoers with visudo to uncomment one of the wheel stanzas<code>
+EDITOR=vim visudo</code>
+    - create home for some_user<code>mkdir -p ~some_user && chown some_user ~some_user</code>
     - su - some_user
-  - Install paru
+  - Install paru<code>sudo pacman -S --needed base-devel git
-    - sudo pacman -S --needed base-devel git
+git clone https://aur.archlinux.org/paru.git
-    - git clone https://aur.archlinux.org/paru.git
+cd paru
-    - cd paru
+makepkg -si
-    - makepkg -si
+</code>
-  - Install zfs support
+  - Install zfs support<code>paru -S zfs-utils
-    - paru -S zfs-utils
+paru -S zfs-dkms
-    - paru -S zfs-dkms
+</code>
-    - exit to root
+  - exit to root<code>exit</code>
   - finish setup
     - <code>zgenhostid -f 0x00bab10c</code>
-    - edit /etc/mkinitcpio.conf
+    - edit /etc/mkinitcpio.conf and modify the HOOKS line adding //resume// and //zfs//<code>
-      - remove fsck, add zfs resume
+vim /etc/mkinitcpio.conf
-      - <code>mkinitcpio -P</code>
+grep ^HOOKS /etc/mkinitcpio.conf
+HOOKS=(base udev autodetect microcode modconf kms keyboard keymap zfs consolefont block filesystems resume)
+mkinitcpio -P</code>
+    - fix up user home directories<code>rm -rf ~some_user; mv /root /_root</code>
     - set up services<code>systemctl disable zfs-import-cache.service
 systemctl mask zfs-import-cache.service
-systemctl enable zfs-import-scan.service
+systemctl enable zfs-import-scan.service zfs-mount.service zfs.target zfs-volumes.target zfs-import.target zfs-zed.service NetworkManager</code>
-systemctl enable zfs-mount.service
+  - Set up the EFI and install zfsbootmenu<code>
-systemctl enable zfs.target
+zfs set org.zfsbootmenu:commandline="rw quiet" zroot/ROOT
-systemctl enable zfs-volumes.target
+mkdir /boot/efi
-systemctl enable zfs-import.target
+mount /boot/efi
-systemctl enable zfs-zed.service
+mkdir -p /boot/efi/EFI/ZBM
-systemctl enable NetworkManager</code>
+curl -o /boot/efi/EFI/ZBM/VMLINUZ.EFI -L https://get.zfsbootmenu.org/efi
+cp /boot/efi/EFI/ZBM/VMLINUZ.EFI /boot/efi/EFI/ZBM/VMLINUZ-BACKUP.EFI
+pacman -S refind
+refind-install
+rm /boot/refind_linux.conf
+cat << EOF >> /boot/efi/EFI/refind/refind_linux.conf
+menuentry "zbm boot" {
+    loader /EFI/ZBM/VMLINUZ.EFI
+    options "quiet loglevel=0 zbm.skip"
+}
+menuentry "zbm menu" {
+    loader /EFI/ZBM/VMLINUZ.EFI
+    options "quiet loglevel=0 zbm.show"
+}
+menuentry "zbm backup menu" {
+    loader /EFI/ZBM/VMLINUZ-BACKUP.EFI
+    options "quiet loglevel=0 zbm.show"
+}
+EOF
+</code>
+  - Exit and reboot<code>
+exit
+umount -n -R /mnt
+zpool export zroot
+reboot
+</code>
+  - Finish up
+    - Log in as root<code>
+zfs create -o mountpoint=none zroot/homes
+zfs create -o mountpoint=/root zroot/homes/root
+zfs create -o mountpoint=/home/USER zroot/homes/USER
+cp -r /etc/skel/. ~
+cp -r /etc/skel/. ~some_user
+chown -R some_user:some_user ~some_user
+chmod 750 ~some_user
+zfs snapshot zroot/ROOT/arch@initial
+exit
+</code>

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