anchor.diff:      controllers = []
   
       IO.popen(%w(sas2ircu list)).each do |line|
  -      if line =~ /^\s+(\d+)\s+(\S+)\s+\h+h\s+\h+h\s+(\S+)\s+\h+h\s+\h+h\s*$/
  -        controllers[$1.to_i] = {
  -          :id => devices[:controllers].count,
  -          :model => $2,
  -          :pci_slot => $3.sub(/^(\h{2})h:(\h{2})h:(\h{2})h:0(\h)h$/, "00\\1:\\2:\\3.\\4"),
  -          :arrays => [],
  -          :disks => []
  -        }
  -
  -        devices[:controllers] << controllers[$1.to_i]
  -      end
  +      next unless line =~ /^\s+(\d+)\s+(\S+)\s+\h+h\s+\h+h\s+(\S+)\s+\h+h\s+\h+h\s*$/
  +      controllers[Regexp.last_match(1).to_i] = {
  +        :id => devices[:controllers].count,
  +        :model => Regexp.last_match(2),
  +        :pci_slot => Regexp.last_match(3).sub(/^(\h{2})h:(\h{2})h:(\h{2})h:0(\h)h$/, "00\\1:\\2:\\3.\\4"),
  +        :arrays => [],
  +        :disks => []
  +      }
  +
  +      devices[:controllers] << controllers[Regexp.last_match(1).to_i]
       end
   
       controllers.each_with_index do |controller, index|
  
positive.code:           when "Enclosure #" then disk[:location] = Regexp.last_match(2)
            when "Slot #" then disk[:location] = "#{disk[:location]}:#{Regexp.last_match(2)}"
            when "SAS Address" then disk[:device] = find_sas_device(Regexp.last_match(2).tr("-", ""))
            when "Size (in MB)/(in sectors)" then disk[:size] = parse_disk_size("#{Regexp.last_match(2).split("/").first} MB")
            when "Manufacturer" then disk[:vendor] = Regexp.last_match(2)
            when "Model Number" then disk[:model] = Regexp.last_match(2)
            when "Firmware Revision" then disk[:firmware_version] = Regexp.last_match(2)
  
negative.code:           when "Protocol" then disk[:interface] = Regexp.last_match(2)
            end
          elsif array && line =~ /^  PHY\[\d+\] Enclosure#\/Slot#\s+:\s+(\d+:\d+)\s*$/
            array[:disks] << Regexp.last_match(1)
          elsif array && line =~ /^  (\S.*\S)\s+:\s+(.*\S)\s*$/
            case Regexp.last_match(1)
            when "Volume wwid" then array[:device] = find_sas_device(Regexp.last_match(2))
  