Add lxc_use_overlayfs variable for configuring OverlayFS

README.md

@@ -258,6 +258,10 @@ These must be valid profiles and present in `test_profiles`.
 
 To cache to directory different from `$HOME/lxc`, modify `lxc_cache_directory`.
 
+If you need to disable the usage of OverlayFS in the LXC containers (e.g. if
+you're attempting to use OverlayFS inside of the LXC container), set
+`lxc_use_overlayfs` to `no` (or any `False` variant)
+
 Contributors
 ------------
 

defaults/main.yml

@@ -14,3 +14,4 @@ container_config:
 additional_packages: []
 lxc_cache_directory: "/home/{{ ansible_user_id }}/lxc"
 #lxc_cache_profiles: "{{ test_profiles | map(attribute='profile') | list }}"
+lxc_use_overlayfs: yes

tasks/main.yml

@@ -168,8 +168,8 @@
     lxc_container:
       name: "{{ item.0.prefix | default(item.0.profile) }}"
       clone_name: "{{ item.0.prefix | default(item.0.profile + '-') }}{{ item.1 }}"
-      clone_snapshot: true
-      backing_store: overlayfs
+      clone_snapshot: "{{ True if lxc_use_overlayfs else False }}"
+      backing_store: "{{ 'overlayfs' if lxc_use_overlayfs else 'dir' }}"
       state: stopped
     register: __clone_jobs
     async: 7200
@@ -221,7 +221,7 @@
   - name: Populate every container's /etc/hosts with every container's addresses
     template:
       src: hosts.j2
-      dest: "/var/lib/lxc/{{ item.name }}/delta0/etc/hosts"
+      dest: "/var/lib/lxc/{{ item.name }}/{{ 'delta0' if lxc_use_overlayfs else 'rootfs' }}/etc/hosts"
     with_items: "{{ lxc_hosts }}"
 
   become: true

tests/deploy_v0.6_compat.yml

@@ -8,3 +8,4 @@
       - make
       - m4
     host_quantity: 2
+    lxc_use_overlayfs: no