test.rb

#!/usr/bin/env ruby
require "minitest/autorun"
require "minitest/doc_reporter"

SMART_CMD = "sudo smartctl"
ZPOOL_CMD = "sudo zpool"

describe "Disks" do
  disks = %x{#{SMART_CMD} --scan-open}.scan /^\S+/

  it "Server has two disks" do
    disks.length.must_equal(2)
  end

  disks.each do |disk|
    describe disk do
      it "S.M.A.R.T. health check is PASSED" do
        %x{#{SMART_CMD} -H #{disk} | grep "overall-health"}.must_match(/PASSED/)
      end
    end
  end
end

describe "Zpool" do
  it "All pools are healthy" do
    %x{#{ZPOOL_CMD} status -x}.must_match(/all pools are healthy/)
  end
end

describe "MDRaid" do
  Dir.glob("/sys/block/md*").map { |x| x.sub(/^\/sys\/block\//, '') }.each do |dev|
    describe dev do
      it "Is healthy" do
        File.open("/sys/block/#{dev}/md/degraded").read.chomp.to_i.must_equal(0)
      end

      it "Has two disks" do
        File.open("/sys/block/#{dev}/md/raid_disks").read.chomp.to_i.must_equal(2)
      end
    end
  end
end

describe "Filesystems" do
  %x{df -x tmpfs -x devtmpfs | grep -v Filesystem}.split(/\n/).map{|x| x.scan(/\S+/)}.each do |fs|
    describe fs[5] do
      it "Used space is less than 90%" do
        fs[4].to_i.must_be(:<, 90)
      end
    end
  end
end