commit 756ad1945eb7f706ee78dcdf335a4094e57d251b
Author: Shu Juan Zhang <zshujuan@cn.ibm.com>
Date:   Thu Oct 15 10:43:10 2020 +0800

    Do not create vswitch when it doesn't exist
    
    Comment out the code of creating non-existing vswitch,
    print a warning message into log.
    
    Change-Id: Ia16aaf6126e7b95bc9ec803ba6a59c1c1a10ca57
    Signed-off-by: Shu Juan Zhang <zshujuan@cn.ibm.com>

diff --git a/neutron/plugins/zvm/agent/zvm_network.py b/neutron/plugins/zvm/agent/zvm_network.py
index f01d60f..cb38f98 100644
--- a/neutron/plugins/zvm/agent/zvm_network.py
+++ b/neutron/plugins/zvm/agent/zvm_network.py
@@ -76,8 +76,11 @@ class zvmNetwork(object):
                 LOG.info('Vswitch %s is pre-created by admin or system, '
                          'neutron-zvm-agent will not handle it' % vsw)
             else:
-                self._vsws.append(zvmVswitch(vsw,
-                                             self._maps[physical_net]))
+                LOG.warning('Vswitch %s does not exist, please change '
+                            'to another existing vswitch or create this '
+                            'vswitch manually.' % vsw)
+                # self._vsws.append(zvmVswitch(vsw,
+                #                             self._maps[physical_net]))
         # Log the physical networks which do not map to physical vswitches
         # and continue the running.
         if unmapped_physical_nets: