自分で考え出した。適切なトラバーサル仕様も設定する必要がありました:
object_spec = client_factory.create('ns0:ObjectSpec')
object_spec.obj = cluster_mor
object_spec.skip = False
object_spec.selectSet = build_recursive_traversal_spec(client_factory)
def build_recursive_traversal_spec(client_factory):
#Recurse through all ResourcePools
rp_to_rp = client_factory.create('ns0:TraversalSpec')
rp_to_rp.name = 'rpToRp'
rp_to_rp.type = 'ResourcePool'
rp_to_rp.path = 'resourcePool'
rp_to_rp.skip = False
rp_to_vm = client_factory.create('ns0:TraversalSpec')
rp_to_vm.name = 'rpToVm'
rp_to_vm.type = 'ResourcePool'
rp_to_vm.path = 'vm'
rp_to_vm.skip = False
spec_array_resource_pool = [client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec')]
spec_array_resource_pool[0].name = 'rpToRp'
spec_array_resource_pool[1].name = 'rpToVm'
rp_to_rp.selectSet = spec_array_resource_pool
#Traversal through resource pool branch
cr_to_rp = client_factory.create('ns0:TraversalSpec')
cr_to_rp.name = 'crToRp'
cr_to_rp.type = 'ComputeResource'
cr_to_rp.path = 'resourcePool'
cr_to_rp.skip = False
spec_array_computer_resource = [client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec')]
spec_array_computer_resource[0].name = 'rpToRp'
spec_array_computer_resource[1].name = 'rpToVm'
cr_to_rp.selectSet = spec_array_computer_resource
#Traversal through host branch
cr_to_h = client_factory.create('ns0:TraversalSpec')
cr_to_h.name = 'crToH'
cr_to_h.type = 'ComputeResource'
cr_to_h.path = 'host'
cr_to_h.skip = False
#Traversal through hostFolder branch
dc_to_hf = client_factory.create('ns0:TraversalSpec')
dc_to_hf.name = 'dcToHf'
dc_to_hf.type = 'Datacenter'
dc_to_hf.path = 'hostFolder'
dc_to_hf.skip = False
spec_array_datacenter_host = [client_factory.create('ns0:SelectionSpec')]
spec_array_datacenter_host[0].name = 'visitFolders'
dc_to_hf.selectSet = spec_array_datacenter_host
#Traversal through vmFolder branch
dc_to_vmf = client_factory.create('ns0:TraversalSpec')
dc_to_vmf.name = 'dcToVmf'
dc_to_vmf.type = 'Datacenter'
dc_to_vmf.path = 'vmFolder'
dc_to_vmf.skip = False
spec_array_datacenter_vm = [client_factory.create('ns0:SelectionSpec')]
spec_array_datacenter_vm[0].name = 'visitFolders'
dc_to_vmf.selectSet = spec_array_datacenter_vm
#Traversal through datastore branch
dc_to_ds = client_factory.create('ns0:TraversalSpec')
dc_to_ds.name = 'dcToDs'
dc_to_ds.type = 'Datacenter'
dc_to_ds.path = 'datastore'
dc_to_ds.skip = False
spec_array_datacenter_ds = [client_factory.create('ns0:SelectionSpec')]
spec_array_datacenter_ds[0].name = 'visitFolders'
dc_to_ds.selectSet = spec_array_datacenter_ds
#Recurse through all hosts
h_to_vm = client_factory.create('ns0:TraversalSpec')
h_to_vm.name = 'hToVm'
h_to_vm.type = 'HostSystem'
h_to_vm.path = 'vm'
h_to_vm.skip = False
spec_array_host_vm = [client_factory.create('ns0:SelectionSpec')]
spec_array_host_vm[0].name = 'visitFolders'
h_to_vm.selectSet = spec_array_host_vm
#Recurse through all datastores
ds_to_vm = client_factory.create('ns0:TraversalSpec')
ds_to_vm.name = 'dsToVm'
ds_to_vm.type = 'Datastore'
ds_to_vm.path = 'vm'
ds_to_vm.skip = False
spec_array_datastore_vm = [client_factory.create('ns0:SelectionSpec')]
spec_array_datastore_vm[0].name = 'visitFolders'
ds_to_vm.selectSet = spec_array_datastore_vm
#Recurse through the folders
visit_folders = client_factory.create('ns0:TraversalSpec')
visit_folders.name = 'visitFolders'
visit_folders.type = 'Folder'
visit_folders.path = 'childEntity'
visit_folders.skip = False
spec_array_visit_folders = [client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec'),
client_factory.create('ns0:SelectionSpec')]
spec_array_visit_folders[0].name = 'visitFolders'
spec_array_visit_folders[1].name = 'dcToHf'
spec_array_visit_folders[2].name = 'dcToVmf'
spec_array_visit_folders[3].name = 'crToH'
spec_array_visit_folders[4].name = 'crToRp'
spec_array_visit_folders[5].name = 'dcToDs'
spec_array_visit_folders[6].name = 'hToVm'
spec_array_visit_folders[7].name = 'dsToVm'
spec_array_visit_folders[8].name = 'rpToVm'
visit_folders.selectSet = spec_array_visit_folders
#Add all of them here
spec_array = [visit_folders, dc_to_vmf, dc_to_ds, dc_to_hf, cr_to_h,
cr_to_rp, rp_to_rp, h_to_vm, ds_to_vm, rp_to_vm]
return spec_array