##### 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

self.relospec.pool = resource_pool
                linked_clone = self.params.get('linked_clone')
                snapshot_src = self.params.get('snapshot_src', None)
                if linked_clone:
                    if snapshot_src is not None:
                        self.relospec.diskMoveType = vim.vm.RelocateSpec.DiskMoveOptions.createNewChildDiskBacking
                    else:
                        self.module.fail_json(msg="Parameter 'linked_src' and 'snapshot_src' are"
                                                  " required together for linked clone operation.")
                clonespec = vim.vm.CloneSpec(template=self.params['is_template'], location=self.relospec)
                if self.customspec:
                    clonespec.customization = self.customspec
                if snapshot_src is not None:
                    if vm_obj.snapshot is None:
                        self.module.fail_json(msg="No snapshots present for virtual machine or template [%(template)s]" % self.params)
                    snapshot = self.get_snapshots_by_name_recursively(snapshots=vm_obj.snapshot.rootSnapshotList,
                                                                      snapname=snapshot_src)
                    if len(snapshot) != 1:
                        self.module.fail_json(msg='virtual machine "%(template)s" does not contain'
                                                  ' snapshot named "%(snapshot_src)s"' % self.params)
                    clonespec.snapshot = snapshot[0].snapshot
                clonespec.config = self.configspec
                clone_method = 'Clone'
                try:
                    task = vm_obj.Clone(folder=destfolder, name=self.params['name'], spec=clonespec)
                except vim.fault.NoPermission as e:
                    self.module.fail_json(msg="Failed to clone virtual machine %s to folder %s "
                                              "due to permission issue: %s" % (self.params['name'],
                                                                               destfolder,
                                                                               to_native(e.msg)))