def write_to_blobs_file(raw, address)
      begin
        File.write(@blobs_file_name, raw, address)
      rescue IOError => e
        PEROBS.log.fatal "Cannot write blobs file #{@blobs_file_name}: " +
          e.message
      end
    end
def write_to_blobs_file(raw, address)
      begin
        File.write(@blobs_file_name, raw, address)
      rescue IOError => e
        PEROBS.log.fatal "Cannot write blobs file #{@blobs_file_name}: " +
          e.message
      end
    end
Write a string of bytes into the file at the given address.
 @param raw [String] bytes to write
 @param address [Integer] offset in the file
 @return [Integer] number of bytes written