ref(playbook): Change to role-based structure

roles/host/tasks/main.yaml

@@ -0,0 +1,36 @@
+#   # The subvol collection seems to be misbehaving?
+#   # https://github.com/ansible-collections/community.general/issues/7098
+# # (and btrfs_subvol module working)
+# - name: Create void btrfs subvol
+#   hosts: host
+#   vars:
+#     btrfs_target: 441a90a5-3da2-46ce-9e32-987569b746c9
+#     mount_dir: /mnt/void
+#   become: true
+#   tasks:
+#     - name: Create @voidroot subvool under root
+#       community.general.btrfs_subvolume:
+#         state: present
+#         name: "/@"
+ #         filesystem_uuid: "{{ btrfs_root_uuid }}"
+ #     # - name: Mount /boot part into voidroot mount
+ #     - name: Mount btrfs subvol into mountdir
+ #       vars:
+ #         boot_dev_uuid:
+ #       ansible.posix.mount:
+ #        src: "{{ item.src }}"
+ #        path: "{{ item.path }}"
+ #        fstype: "{{ item.fstype }}"
+ #        state: mounted
+ #       with_items:
+ #        - { fstype: 'ext4',  src: '/dev/mapper/{{ vgname }}-root', path: '{{ mount_dir }}/' }
+ #         # TODO: should take opts from fstab. Definitely needs 'boot' type option
+ #        - { fstype: 'vfat',  src: '/dev/disk/by-uuid/{{ boot_dev_uuid }}', path: '{{ mount_dir }}/boot' }
+
+- name: Unpack rootfs
+  ansible.builtin.unarchive:
+    remote_src: yes # we already downloaded it to the 'remote' system
+    src: "{{ tarball_url }}"
+    dest: "{{ mount_dir }}"
+    # ONLY run if this file does not exist (could use any rootfs file to check)
+    creates: "{{ mount_dir }}/etc/os-release"