From 380c749e78d184ccc9b08847ac75ca0afd062216 Mon Sep 17 00:00:00 2001
From: Brian Candler <b.candler@pobox.com>
Date: Mon, 11 Jul 2016 11:38:28 +0000
Subject: [PATCH] Fix for mysql aio errors

---
 ansible/roles/container_base/files/mysql_lxd.cnf |  6 ++++++
 ansible/roles/container_base/tasks/main.yml      | 13 +++++++++++++
 2 files changed, 19 insertions(+)
 create mode 100644 ansible/roles/container_base/files/mysql_lxd.cnf

diff --git a/ansible/roles/container_base/files/mysql_lxd.cnf b/ansible/roles/container_base/files/mysql_lxd.cnf
new file mode 100644
index 0000000..a8dadce
--- /dev/null
+++ b/ansible/roles/container_base/files/mysql_lxd.cnf
@@ -0,0 +1,6 @@
+[mysqld]
+
+# When running many mysql instances, we need to disable aio
+# http://linux-tips.org/t/mysql-innodb-asynchronous-io-tuning/247
+
+innodb_use_native_aio = 0
diff --git a/ansible/roles/container_base/tasks/main.yml b/ansible/roles/container_base/tasks/main.yml
index 3123a2f..91abdad 100644
--- a/ansible/roles/container_base/tasks/main.yml
+++ b/ansible/roles/container_base/tasks/main.yml
@@ -29,3 +29,16 @@
   copy:
     src: gai.conf
     dest: /etc/gai.conf
+
+- name: create /etc/mysql/conf.d
+  file:
+    path: /etc/mysql/conf.d
+    state: directory
+    owner: root
+    group: root
+    mode: 0755
+
+- name: install mysql_lxd.cnf
+  copy:
+    src: mysql_lxd.cnf
+    dest: /etc/mysql/conf.d/lxd.cnf
-- 
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