Preparation

1. Disable Secure Boot. ZFS modules can not be loaded if Secure Boot is enabled.

2. Download a variant of AlmaLinux Minimal Live ISO and boot from it.

3. Connect to the Internet.

4. Set root password or /root/.ssh/authorized_keys.

5. Start SSH server:

   echo PermitRootLogin yes >> /etc/ssh/sshd_config
   systemctl restart sshd
   

6. Connect from another computer:

   ssh root@192.168.1.19
   

7. Target disk

   List available disks with:

   find /dev/disk/by-id/
   

   If using virtio as disk bus, use /dev/disk/by-path/.

   Declare disk array:

   DISK='/dev/disk/by-id/ata-FOO /dev/disk/by-id/nvme-BAR'
   

   For single disk installation, use:

   DISK='/dev/disk/by-id/disk1'
   

8. Set partition size:

   Set swap size, set to 1 if you don’t want swap to take up too much space:

   INST_PARTSIZE_SWAP=4
   

   Root pool size, use all remaining disk space if not set:

   INST_PARTSIZE_RPOOL=
   

9. Temporarily set SELinux to permissive in live environment:

   setenforce 0
   

   SELinux will be enabled on the installed system.

10. Add ZFS repo and install ZFS inside live system:

    dnf install -y https://zfsonlinux.org/epel/zfs-release-2-2$(rpm --eval "%{dist}").noarch.rpm
    rpm -e --nodeps zfs-fuse || true
    source /etc/os-release
    export VERSION_ID
    dnf config-manager --disable zfs
    dnf config-manager --enable zfs-kmod
    dnf install -y zfs
    modprobe zfs
    

11. Install partition tool and arch-install-scripts:

    dnf install -y epel-release
    dnf install -y gdisk dosfstools cryptsetup
    dnf download arch-install-scripts
    rpm -i --nodeps arch-install-scripts*.rpm
    dnf remove -y epel-release