Add mdadm plugin / specs

Grab data on mdadm raid arrays in ohai

1 files changed, 104 insertions, 0 deletions

diff --git a/spec/unit/plugins/linux/mdadm_spec.rb b/spec/unit/plugins/linux/mdadm_spec.rb
new file mode 100644
index 00000000..ae4b512b
--- /dev/null
+++ b/spec/unit/plugins/linux/mdadm_spec.rb
@@ -0,0 +1,104 @@
+#
+#  Author:: Tim Smith <tsmith@limelight.com>
+#  Copyright:: Copyright (c) 2014 Limelight Networks, Inc.
+#  License:: Apache License, Version 2.0
+#
+#  Licensed under the Apache License, Version 2.0 (the "License");
+#  you may not use this file except in compliance with the License.
+#  You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+#  Unless required by applicable law or agreed to in writing, software
+#  distributed under the License is distributed on an "AS IS" BASIS,
+#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#  See the License for the specific language governing permissions and
+#  limitations under the License.
+#
+
+require File.expand_path(File.dirname(__FILE__) + '/../../../spec_helper.rb')
+
+describe Ohai::System, "Linux Mdadm Plugin" do
+  before(:each) do
+    @md0 = <<-MD
+/dev/md0:
+        Version : 1.2
+  Creation Time : Thu Jan 30 03:11:40 2014
+     Raid Level : raid10
+     Array Size : 2929893888 (2794.16 GiB 3000.21 GB)
+  Used Dev Size : 976631296 (931.39 GiB 1000.07 GB)
+   Raid Devices : 6
+  Total Devices : 6
+    Persistence : Superblock is persistent
+
+    Update Time : Tue May  6 23:30:32 2014
+          State : clean
+ Active Devices : 6
+Working Devices : 6
+ Failed Devices : 0
+  Spare Devices : 0
+
+         Layout : near=2
+     Chunk Size : 256K
+
+           Name : host.therealtimsmith.com:3  (local to host host.therealtimsmith.com)
+           UUID : 5ed74d5b:70bfe21d:8cd57792:c1e13d65
+         Events : 155
+
+    Number   Major   Minor   RaidDevice State
+       0       8       32        0      active sync   /dev/sdc
+       1       8       48        1      active sync   /dev/sdd
+       2       8       64        2      active sync   /dev/sde
+       3       8       80        3      active sync   /dev/sdf
+       4       8       96        4      active sync   /dev/sdg
+       5       8      112        5      active sync   /dev/sdh
+MD
+    @plugin = get_plugin("linux/mdadm")
+    @plugin.stub(:collect_os).and_return(:linux)
+    @double_file = double("/proc/mdstat")
+    @double_file.stub(:each).
+    and_yield("Personalities : [raid1] [raid6] [raid5] [raid4] [linear] [multipath] [raid0] [raid10]").
+    and_yield("md0 : active raid10 sdh[5] sdg[4] sdf[3] sde[2] sdd[1] sdc[0]").
+    and_yield("      2929893888 blocks super 1.2 256K chunks 2 near-copies [6/6] [UUUUUU]")
+    File.stub(:open).with("/proc/mdstat").and_return(@double_file)
+    File.stub(:exist?).with("/proc/mdstat").and_return(true)
+    @plugin.stub(:shell_out).with("mdadm --detail /dev/md0").and_return(mock_shell_out(0, @md0, ""))
+  end
+
+  describe "gathering Mdadm information via /proc/mdstat and mdadm" do
+
+    it "should not raise an error" do
+      lambda { @plugin.run }.should_not raise_error
+    end
+
+    it "should detect raid level" do
+      @plugin.run
+      @plugin[:mdadm][:md0][:level].should be 10
+    end
+
+    it "should detect raid state" do
+      @plugin.run
+      @plugin[:mdadm][:md0][:state].should == "clean"
+    end
+
+    it "should detect raid size" do
+      @plugin.run
+      @plugin[:mdadm][:md0][:size].should be 2794.16
+    end
+
+    it "should detect raid metadata level" do
+      @plugin.run
+      @plugin[:mdadm][:md0][:version].should be 1.2
+    end
+
+    device_counts = { :raid => 6, :total => 6, :active => 6, :working => 6, :failed => 0, :spare => 0 }
+    device_counts.each_pair do |item, expected_value|
+      it "should detect device count of \"#{item}\"" do
+        @plugin.run
+        @plugin[:mdadm][:md0][:device_counts][item].should be expected_value
+      end
+    end
+
+  end
+
+end