docs: def _init_fcp_pool(self, fcp_list, assigner_id):
          """The FCP infomation got from smt(zthin) looks like :
             host: FCP device number: xxxx
             host:   Status: Active
             host:   NPIV world wide port number: xxxxxxxx
             host:   Channel path ID: xx
             host:   Physical world wide port number: xxxxxxxx
             ......
             host: FCP device number: xxxx
             host:   Status: Active
             host:   NPIV world wide port number: xxxxxxxx
             host:   Channel path ID: xx
             host:   Physical world wide port number: xxxxxxxx
  
          """
          complete_fcp_set = self._expand_fcp_list(fcp_list)
          fcp_info = self._get_all_fcp_info(assigner_id)
          lines_per_item = 5
  
          num_fcps = len(fcp_info) // lines_per_item
          for n in range(0, num_fcps):
              fcp_init_info = fcp_info[(5 * n):(5 * (n + 1))]
              fcp = FCP(fcp_init_info)
              dev_no = fcp.get_dev_no()
              if dev_no in complete_fcp_set:
                  if fcp.is_valid():
                      self._fcp_pool[dev_no] = fcp
                  else:
                      errmsg = ("Find an invalid FCP device with properties {"
                                "dev_no: %(dev_no)s, "
                                "NPIV_port: %(NPIV_port)s, "
                                "CHPID: %(CHPID)s, "
                                "physical_port: %(physical_port)s} !") % {
                                 'dev_no': fcp.get_dev_no(),
                                 'NPIV_port': fcp.get_npiv_port(),
                                 'CHPID': fcp.get_chpid(),
                                 'physical_port': fcp.get_physical_port()}
                      LOG.warning(errmsg)
              else:
                  # normal, FCP not used by cloud connector at all
                  msg = "Found a fcp %s not in fcp_list" % dev_no
                  LOG.debug(msg)