From: Grant Slater <git@firefishy.com>
Date: Mon, 17 Feb 2014 06:18:22 +0000 (+0000)
Subject: Improve disk tuning on HP systems
X-Git-Url: https://git.openstreetmap.org/chef.git/commitdiff_plain/0683e7297dfe0499de0be143aba88559683f01f1?hp=ece798d8eac3bf2d874e3ab6300de2941981fc03

Improve disk tuning on HP systems
---

diff --git a/cookbooks/devices/templates/default/udev.rules.erb b/cookbooks/devices/templates/default/udev.rules.erb
index 27951c4ff..8f40e5b7d 100644
--- a/cookbooks/devices/templates/default/udev.rules.erb
+++ b/cookbooks/devices/templates/default/udev.rules.erb
@@ -3,6 +3,7 @@
 # HP Smart Array configuration
 ACTION=="add", SUBSYSTEM=="block", ENV{ID_VENDOR}=="HP", ENV{ID_MODEL}=="LOGICAL_VOLUME", ATTR{queue/scheduler}="noop"
 ACTION=="add", SUBSYSTEM=="block", ENV{ID_VENDOR}=="HP", ENV{ID_MODEL}=="LOGICAL_VOLUME", ATTR{queue/nr_requests}="512"
+ACTION=="add", SUBSYSTEM=="block", ENV{ID_VENDOR}=="HP", ENV{ID_MODEL}=="LOGICAL_VOLUME", ATTR{queue/read_ahead_kb}="4096"
 <% node[:devices].each do |name,device| -%>
 
 # <%= device[:comment] %>