From 928d3aec252bc876234fb359dc6fa5ab172da427 Mon Sep 17 00:00:00 2001
From: Clark Boylan <clark.boylan@gmail.com>
Date: Thu, 5 Dec 2019 15:43:03 -0800
Subject: [PATCH] Increase udp buffer sizes when installing afs client

Linux default udp buffer sizes are somewhat small if sending much udp
traffic. Openafs uses udp for all of its traffic so we increase the
buffer size to 25MB.

Change-Id: Ie6cb7467c186d5471c71ca876ea9e29a90423bed
---
 roles/openafs-client/files/99-afs-udp.conf | 2 ++
 roles/openafs-client/tasks/main.yaml       | 9 +++++++++
 2 files changed, 11 insertions(+)
 create mode 100644 roles/openafs-client/files/99-afs-udp.conf

diff --git a/roles/openafs-client/files/99-afs-udp.conf b/roles/openafs-client/files/99-afs-udp.conf
new file mode 100644
index 0000000000..75eb342dcb
--- /dev/null
+++ b/roles/openafs-client/files/99-afs-udp.conf
@@ -0,0 +1,2 @@
+net.core.rmem_max=26214400
+net.core.rmem_default=26214400
diff --git a/roles/openafs-client/tasks/main.yaml b/roles/openafs-client/tasks/main.yaml
index f673846308..824bd6b330 100644
--- a/roles/openafs-client/tasks/main.yaml
+++ b/roles/openafs-client/tasks/main.yaml
@@ -9,6 +9,15 @@
       paths:
         - vars
 
+- name: Increase udp buffer sizes
+  copy:
+    src: 99-afs-udp.conf
+    dest: /etc/sysctl.d/99-afs-udp.conf
+    owner: root
+    group: root
+    mode: '0644'
+  become: yes
+
 - name: Check config path defined
   fail:
     msg: "openafs_client_config_path not defined"