poldi: tune disks readahead

[chef.git] / roles / poldi.rb

diff --git a/roles/poldi.rb b/roles/poldi.rb
index 5f73b6239b07472e55c1663fed221d44bfc494c5..869d4b8befbf74f77db2b83ca20ccabb78ce3c66 100644 (file)
--- a/roles/poldi.rb
+++ b/roles/poldi.rb
@@ -3,31 +3,34 @@ description "Master role applied to poldi"
 
 default_attributes(
   :devices => {
-    :ubuntu => {
-      :comment => "RAID array backing the ubuntu volume group",
+    :areca_ld_tune => {
+      :comment => "RAID arrays on areca",
       :type => "block",
       :bus => "scsi",
-      :serial => "20004d927fffff800",
+      :serial => "20004d927fffff*",
       :attrs => {
-        "queue/scheduler" => "deadline"
+        "queue/scheduler" => "deadline",
+        "queue/read_ahead_kb" => "2048"
       }
     },
-    :nominatim => {
-      :comment => "RAID array backing the nominatim volume group",
+    :ssd_samsung_tune => {
+      :comment => "Tune Samsung SSD",
       :type => "block",
-      :bus => "scsi",
-      :serial => "20004d927fffff801",
+      :bus => "ata",
+      :serial => "Samsung_SSD_840_PRO_Series_*",
       :attrs => {
-        "queue/scheduler" => "deadline"
+        "queue/scheduler" => "noop",
+        "queue/nr_requests" => "256",
+        "queue/read_ahead_kb" => "2048"
       }
-    },
-    :nominatim2 => {
-      :comment => "RAID array backing the nominatim2 volume group",
-      :type => "block",
-      :bus => "scsi",
-      :serial => "20004d927fffff802",
-      :attrs => {
-        "queue/scheduler" => "deadline"
+    }
+  },
+  :sysfs => {
+    :md_tune => {
+      :comment => "Tune the md sync performance so as not to kill system performance",
+      :parameters => {
+        "block/md0/md/sync_speed_min" => "100",
+        "block/md0/md/sync_speed_max" => "100000"
       }
     }
   },