# File lib/backup/archive.rb, line 70
    def perform!
      Logger.message "#{ self.class } started packaging and archiving:\n" +
          paths.map {|path| "  #{path}" }.join("\n")

      archive_path = File.join(Config.tmp_path, @model.trigger, 'archives')
      FileUtils.mkdir_p(archive_path)

      archive_ext = 'tar'
      archive_cmd = "#{ utility(:tar) } #{ tar_args } -cf - " +
          "#{ paths_to_exclude } #{ paths_to_package }"

      if @model.compressor
        @model.compressor.compress_with do |command, ext|
          archive_cmd << " | #{command}"
          archive_ext << ext
        end
      end

      archive_cmd << " > '#{ File.join(archive_path, "#{name}.#{archive_ext}") }'"

      run(archive_cmd)
    end