ridgeback: Set slower md resync/check speed as not to kill IOPs

[chef.git] / roles / trogdor.rb

diff --git a/roles/trogdor.rb b/roles/trogdor.rb
index 9429204ae8792ef32476bfd9e25c06d5b3814574..5ba0b66c8457468004bd700dafee0be2fe1069dd 100644 (file)
--- a/roles/trogdor.rb
+++ b/roles/trogdor.rb
@@ -14,6 +14,17 @@ default_attributes(
       }
     }
   },
+  :sysfs => {
+    :md_tune => {
+      :comment => "Tune the md sync performance so as not to kill system performance",
+      :parameters => {
+        "block/md0/md/sync_speed_min" => "10",
+        "block/md0/md/sync_speed_max" => "10000",
+        "block/md1/md/sync_speed_min" => "10",
+        "block/md1/md/sync_speed_max" => "10000"
+      }
+    }
+  },
   :squid => {
     :cache_mem => "6400 MB",
     :cache_dir => "coss /store/squid/coss-01 128000 block-size=8192 max-size=262144 membufs=80"