Remember: 8.4 Hosts operations by using the GUI The following information can be useful: NPIV is enabled on the IBM Spectrum Virtualize system, and you confirmed that the hosts  are using the virtualized WWPNs for I/O. To complete the NPIV implementation, the host  zones can be amended to remove the old primary attach port WWPNs. Example 8-14 shows  our final zone with the host HBA and the SAN Volume Controller virtual WWPNs. Note:  If there are still hosts that are configured to use the physical ports on the SAN  Volume Controller system, the system prevents you from changing  fctargetportmode  from  transitional  to  enabled , and shows the following error: CMMVC8019E Task could interrupt IO and force flag not set. This section describes performing the following host operations by using the IBM Spectrum  Virtualize GUI: GLYPH<SM590000> You can verify that you are logged in to the NPIV ports by entering the  lsfabric  -host host_id_or_name  command. If I/O activity is occurring, each host has at least  one line in the command output that corresponds to a host port and shows  active  in  the activity field: – Hosts where no I/O occurred in the past 5 minutes show  inactive  for any login. – Hosts that do not adhereto preferred paths might still be processing I/O to  primary ports. GLYPH<SM590000> Depending on the host operating system, rescanning of for storage might be  required on some hosts to recognize extra paths that are now provided by using  primary host attach ports (virtual WWPNs). 8. After all hosts are rezoned and the pathing is validated, change the system NPIV to  enabled  mode by entering the command that is shown in Example 8-13. GLYPH<SM590000> Creating hosts GLYPH<SM590000> Advanced host administration GLYPH<SM590000> Adding and deleting host ports GLYPH<SM590000> Host mappings overview 352  Implementing the IBM System Storage SAN Volume Controller with IBM Spectrum Virtualize V8.2.1 Example 8-14 Final host zone Example 8-13 Enabling NPIV IBM_2145:ITSO-SV1:superuser>chiogrp -fctargetportmode enabled 0 zone: WINDOWS_HOST_01_IBM_ITSOSV1 10:00:00:05:1e:0f:81:cc 50:05:07:68:01:42:A2:88 50:05:07:68:01:12:A2:88 50:05:07:68:0C:15:00:09 50:05:07:68:0C:17:00:09