From: Sébastien Han <sebastien.han@enovance.com>
Date: Thu, 15 Jan 2015 10:42:51 +0000 (+0100)
Subject: Ability to disable swap
X-Git-Tag: v1.0.0~270^2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=refs%2Fpull%2F186%2Fhead;p=ceph-ansible.git

Ability to disable swap

With enough memory we will probably not need any swap.

Signed-off-by: Sébastien Han <sebastien.han@enovance.com>
---

diff --git a/roles/ceph-common/defaults/main.yml b/roles/ceph-common/defaults/main.yml
index 40733433c..5f4741237 100644
--- a/roles/ceph-common/defaults/main.yml
+++ b/roles/ceph-common/defaults/main.yml
@@ -124,6 +124,7 @@ radosgw: false # referenced in monitor role too.
 ###########
 
 disable_transparent_hugepage: true
+disable_swap: true
 os_tuning_params:
   - { name: kernel.pid_max, value: 4194303 }
   - { name: fs.file-max, value: 26234859 }
diff --git a/roles/ceph-common/tasks/os_tuning.yml b/roles/ceph-common/tasks/os_tuning.yml
index f920882c5..7bf05f4f5 100644
--- a/roles/ceph-common/tasks/os_tuning.yml
+++ b/roles/ceph-common/tasks/os_tuning.yml
@@ -5,8 +5,13 @@
 
 - name: Disable transparent hugepage
   command: "echo never > /sys/kernel/mm/transparent_hugepage/enabled"
-  ignore_errors: true
   when: disable_transparent_hugepage
+  ignore_errors: true
+
+- name: Disable swap
+  command: swapoff -a
+  when: disable_swap
+  ignore_errors: true
 
 - name: Apply OS tuning
   sysctl: >