##### SUMMARY

The following snippet from https://github.com/ansible/ansible/blob/devel/test/integration/targets/vmware_guest/tasks/create_d1_c1_f0.yml uses `autoselect_datastore: True`.

```yaml
- name: create new VMs
  vmware_guest:
    validate_certs: False
    hostname: "{{ vcenter_hostname }}"
    username: "{{ vcenter_username }}"
    password: "{{ vcenter_password }}"
    name: newvm_1
    #template: "{{ item|basename }}"
    guest_id: centos64Guest
    datacenter: "{{ dc1 }}"
    hardware:
        num_cpus: 1
        num_cpu_cores_per_socket: 1
        memory_mb: 256
        hotadd_memory: true
        hotadd_cpu: false
        max_connections: 10
    disk:
        - size: 1gb
          type: thin
          autoselect_datastore: True
    state: poweredoff
    folder: F0
```

One of my two datastores is dedicated to the ISO image and so, is readOnly. But it still get selected consistently. I use the following hack to avoid the problem:

```diff
diff --git a/lib/ansible/modules/cloud/vmware/vmware_guest.py b/lib/ansible/modules/cloud/vmware/vmware_guest.py
index 6a63e97798..3648e3e87f 100644
--- a/lib/ansible/modules/cloud/vmware/vmware_guest.py
+++ b/lib/ansible/modules/cloud/vmware/vmware_guest.py
@@ -1925,6 +1925,15 @@ class PyVmomiHelper(PyVmomi):
 
                 datastore_freespace = 0
                 for ds in datastores:
+                    is_readonly = False
+                    for h in ds.host:
+                        if h.mountInfo.accessMode == 'readOnly':
+                            is_readonly = True
+                            break
+
+                    if is_readonly:
+                        continue
+
                     if (ds.summary.freeSpace > datastore_freespace) or (ds.summary.freeSpace == datastore_freespace and not datastore):
                         # If datastore field is provided, filter destination datastores
                         if 'datastore' in self.params['disk'][0] and \
```
<!--- Explain the problem briefly below -->

##### ISSUE TYPE
- Bug Report

##### COMPONENT NAME
<!--- Write the short name of the module, plugin, task or feature below, use your best guess if unsure -->

vmware_guest

nic_change_detected = True
                if nic.device.deviceInfo.summary != network_name:
                    nic.device.deviceInfo.summary = network_name
                    nic_change_detected = True
                if 'device_type' in network_devices[key]:
                    device = self.device_helper.get_device(network_devices[key]['device_type'], network_name)
                    device_class = type(device)
                    if not isinstance(nic.device, device_class):
                        self.module.fail_json(msg="Changing the device type is not possible when interface is already present. "
                                                  "The failing device type is %s" % network_devices[key]['device_type'])
                
                if 'mac' in network_devices[key] and nic.device.macAddress != current_net_devices[key].macAddress:
                    self.module.fail_json(msg="Changing MAC address has not effect when interface is already present. "
                                              "The failing new MAC address is %s" % nic.device.macAddress)
            else:
                
                device_type = network_devices[key].get('device_type', 'vmxnet3')
                nic = self.device_helper.create_nic(device_type,
                                                    'Network Adapter %s' % (key + 1),
                                                    network_devices[key])
                nic.operation = vim.vm.device.VirtualDeviceSpec.Operation.add
                nic_change_detected = True
            if hasattr(self.cache.get_network(network_name), 'portKeys'):
                
                pg_obj = None
                if 'dvswitch_name' in network_devices[key]:
                    dvs_name = network_devices[key]['dvswitch_name']
                    dvs_obj = find_dvs_by_name(self.content, dvs_name)
                    if dvs_obj is None:
                        self.module.fail_json(msg="Unable to find distributed virtual switch %s" % dvs_name)