This seem like happens when large amount of data is sent over to

vcenter in SOAP (multiple hosts to be added to dvswitch which has
about 200 port groups). This is not seen when trying to add single
host, it may still break if the sheer number of port groups is high.
but for now we can do single host addition to the dvswitch instead
of all hosts at once.

Change-Id: I6719920dcc5a92dd4cc72e683347bf119d1cc3c0
Closes-Bug: #1468479

fabfile/tasks/vcenter_prov.py

@@ -400,20 +400,13 @@ def configure_hosts_on_dvSwitch(self, si, network_folder, clusters, dvs_name):
             return
         else:
             host_list = []
-            dvs_host_configs = []
-            uplink_port_names = []
-            dvs_config_spec = self.pyVmomi.vim.DistributedVirtualSwitch.ConfigSpec()
-            dvs_config_spec.configVersion = dvs.config.configVersion
-            dvs_config_spec.uplinkPortPolicy = self.pyVmomi.vim.DistributedVirtualSwitch.NameArrayUplinkPortPolicy()
             for cluster_name in clusters:
                 cluster = self.get_obj([self.pyVmomi.vim.ClusterComputeResource], cluster_name)
                 host_list.append(cluster.host)
             hosts = []
             for mo in host_list:
                 for host in mo:
                     hosts.append(host)
-            for x in range(len(hosts)):
-                uplink_port_names.append("dvUplink%d" % x)
             for each_host in dvs.config.host:
                 if each_host.config.host in hosts:
                     print "%s host already exists in the dvswitch" % each_host.config.host
@@ -423,6 +416,11 @@ def configure_hosts_on_dvSwitch(self, si, network_folder, clusters, dvs_name):
                 return
 
             for host in hosts:
+                dvs_host_configs = []
+                uplink_port_names = "dvUplink1"
+                dvs_config_spec = self.pyVmomi.vim.DistributedVirtualSwitch.ConfigSpec()
+                dvs_config_spec.configVersion = dvs.config.configVersion
+                dvs_config_spec.uplinkPortPolicy = self.pyVmomi.vim.DistributedVirtualSwitch.NameArrayUplinkPortPolicy()
                 dvs_config_spec.uplinkPortPolicy.uplinkPortName = uplink_port_names
                 dvs_config_spec.maxPorts = 60000
                 #pnic_spec = self.pyVmomi.vim.dvs.HostMember.PnicSpec()
@@ -435,8 +433,8 @@ def configure_hosts_on_dvSwitch(self, si, network_folder, clusters, dvs_name):
                 dvs_host_config.backing = self.pyVmomi.vim.dvs.HostMember.PnicBacking()
                 #dvs_host_config.backing.pnicSpec = pnic_specs
                 dvs_config_spec.host = dvs_host_configs
-            task = dvs.ReconfigureDvs_Task(dvs_config_spec)
-            self.wait_for_task(task,si)
+                task = dvs.ReconfigureDvs_Task(dvs_config_spec)
+                self.wait_for_task(task,si)
             print "Successfully configured hosts on dvswitch ", dvs_name
 
     def reconfigure_dvSwitch(self, si, clusters, dvs_name):
@@ -446,44 +444,34 @@ def reconfigure_dvSwitch(self, si, clusters, dvs_name):
             return
         else:
             add_hosts = []
-            dvs_host_configs = []
-            uplink_port_names = []
-            host_list = []
-
-            dvs_config_spec = self.pyVmomi.vim.DistributedVirtualSwitch.ConfigSpec()
-            dvs_config_spec.configVersion = dvs.config.configVersion
-
-            dvs_config_spec.uplinkPortPolicy = self.pyVmomi.vim.DistributedVirtualSwitch.NameArrayUplinkPortPolicy()
-
             for host_info in self.hosts:
                 host = self.get_obj([self.pyVmomi.vim.HostSystem], host_info[0])
                 add_hosts.append(host)
 
-            for cluster_name in clusters:
-                cluster = self.get_obj([self.pyVmomi.vim.ClusterComputeResource], cluster_name)
-                host_list.append(cluster.host)
-            cluster_hosts = []
-            for mo in host_list:
-                for host in mo:
-                    cluster_hosts.append(host)
-
-            uplink = 0
-            for x in range(len(cluster_hosts)-1):
-                uplink = uplink + 1
+            for each_host in dvs.config.host:
+                if each_host.config.host in add_hosts:
+                    print "%s host already exists in the dvswitch" % each_host.config.host
+                    add_hosts.remove(each_host.config.host)
+            if not add_hosts:
+                print "No hosts left to add to dvswitch ", dvs_name
+                return dvs
 
+            print "Updating dvs_config_spec"
             for host in add_hosts:
-                print "Updating dvs_config_spec"
-                uplink_port_names.append("dvUplink%d" %uplink)
-                uplink = uplink + 1
+                dvs_host_configs = []
+                uplink_port_names = "dvUplink1"
+                dvs_config_spec = self.pyVmomi.vim.DistributedVirtualSwitch.ConfigSpec()
+                dvs_config_spec.configVersion = dvs.config.configVersion
+                dvs_config_spec.uplinkPortPolicy = self.pyVmomi.vim.DistributedVirtualSwitch.NameArrayUplinkPortPolicy()
                 dvs_config_spec.uplinkPortPolicy.uplinkPortName = uplink_port_names
                 dvs_host_config = self.pyVmomi.vim.dvs.HostMember.ConfigSpec()
                 dvs_host_config.operation = self.pyVmomi.vim.ConfigSpecOperation.add
                 dvs_host_config.host = host
                 dvs_config_spec.host.append(dvs_host_config)
-            task = dvs.ReconfigureDvs_Task(dvs_config_spec)
-            self.wait_for_task(task,si)
+                task = dvs.ReconfigureDvs_Task(dvs_config_spec)
+                self.wait_for_task(task,si)
             print "Successfully reconfigured DVS ", dvs_name
-            return self.get_obj( [self.pyVmomi.vim.DistributedVirtualSwitch],dvs_name)
+            return dvs
 
     def create_datacenter(self, dcname=None, folder=None):
         datacenter = self.get_obj([self.pyVmomi.vim.Datacenter], dcname)