arch installation mostly works with zfsbootmgr

roles/base/tasks/archinstall/initialize_root_zvol.yaml

@@ -0,0 +1,67 @@
+---
+- name: Check for existing zroot zfs volume
+  command: zpool list -Ho name zroot
+  register: zroot_check
+  ignore_errors: true
+
+- block:
+  - name: Initialize disk device to id table
+    set_fact:
+      partition_device_to_ids: {}
+
+  - name: Create disk device to id table
+    set_fact:
+      partition_device_to_ids: >-
+        {{
+          partition_device_to_ids
+          | combine({ item.value: (partition_device_to_ids[item.value] | default([])) + [item.key] })
+        }}
+    with_items: "{{ base_partitions_by_id | dict2items }}"
+
+  - name: Create zroot volume
+    become: true
+    command: >-
+      zpool create -f -o ashift=12
+        -o autotrim=on
+        -O devices=off
+        -O relatime=on
+        -O xattr=sa
+        -O acltype=posixacl
+        -O normalization=formD
+        -O compression=lz4
+        -O canmount=off
+        -O mountpoint=none
+        -R /mnt
+        zroot {{ mirror }} {{ base_root_partitions | map('extract', partition_device_to_ids) | flatten | list | join(' ') }}
+    vars:
+      mirror: "{{ 'mirror' if base_root_partitions | length > 1 else '' }}"
+  when: zroot_check.rc != 0
+
+- name: Create zroot/ROOT and zroot/DATA volumes
+  community.general.zfs:
+    name: "zroot/{{ item }}"
+    state: present
+  register: zfs_zroot_root_volume
+  with_items: [ROOT, DATA]
+
+- name: Create zroot/ROOT/arch
+  community.general.zfs:
+    name: zroot/ROOT/arch
+    state: present
+    extra_zfs_properties:
+      canmount: noauto
+      mountpoint: /
+  when: zfs_zroot_root_volume.changed
+
+- name: Create zroot/home
+  community.general.zfs:
+    name: zroot/DATA/home
+    state: present
+    extra_zfs_properties:
+      mountpoint: /home
+
+- name: Export zroot pool
+  command: zpool export zroot
+
+- name: Import zroot pool (-R /mnt)
+  command: zpool import -R /mnt zroot -N