From 941b8905feb30f2537360b002ae4b9a457b0f3e2 Mon Sep 17 00:00:00 2001
From: Steve Milner <smilner@redhat.com>
Date: Wed, 19 Jul 2017 10:22:40 -0400
Subject: cri-o: Ensure overlay is available

Some distro releases may not have overlay loaded into the kernel. This
change looks for overlay via lsmod and, if it isn't already there,
uses modprobe to load it in and then drops a load config into
/etc/modules-load.d/overlay.conf.
---
 roles/docker/tasks/systemcontainer_crio.yml | 20 ++++++++++++++++++++
 roles/docker/templates/overlay.conf.j2      |  2 ++
 2 files changed, 22 insertions(+)
 create mode 100644 roles/docker/templates/overlay.conf.j2

(limited to 'roles/docker')

diff --git a/roles/docker/tasks/systemcontainer_crio.yml b/roles/docker/tasks/systemcontainer_crio.yml
index 651a20ea2..68f9d9649 100644
--- a/roles/docker/tasks/systemcontainer_crio.yml
+++ b/roles/docker/tasks/systemcontainer_crio.yml
@@ -25,6 +25,26 @@
     state: present
   when: not openshift.common.is_atomic | bool
 
+
+- name: Check that overlay is in the kernel
+  shell: lsmod | grep overlay
+  register: l_has_overlay_in_kernel
+  ignore_errors: yes
+
+
+- when: l_has_overlay_in_kernel.rc != 0
+  block:
+
+    - name: Add overlay to modprobe.d
+      template:
+        dest: /etc/modules-load.d/overlay.conf
+        src: overlay.conf.j2
+        backup: yes
+
+    - name: Manually modprobe overlay into the kernel
+      command: modprobe overlay
+
+
 - block:
 
     - name: Add http_proxy to /etc/atomic.conf
diff --git a/roles/docker/templates/overlay.conf.j2 b/roles/docker/templates/overlay.conf.j2
new file mode 100644
index 000000000..782f46c2e
--- /dev/null
+++ b/roles/docker/templates/overlay.conf.j2
@@ -0,0 +1,2 @@
+### {{ ansible_managed }}
+overlay
-- 
cgit v1.2.1