ovirt_vms: Wait for VM disks when adding VM (#31468)

Fixes: https://github.com/ansible/ansible/issues/30515

lib/ansible/modules/cloud/ovirt/ovirt_vms.py

@@ -843,6 +843,17 @@ class VmsModule(BaseModule):
             timeout=self.param('timeout'),
         )
 
+    def _wait_for_vm_disks(self, vm_service):
+        disks_service = self._connection.system_service().disks_service()
+        for da in vm_service.disk_attachments_service().list():
+            disk_service = disks_service.disk_service(da.disk.id)
+            wait(
+                service=disk_service,
+                condition=lambda disk: disk.status == otypes.DiskStatus.OK,
+                wait=self.param('wait'),
+                timeout=self.param('timeout'),
+            )
+
     def wait_for_down(self, vm):
         """
         This function will first wait for the status DOWN of the VM.
@@ -884,8 +895,14 @@ class VmsModule(BaseModule):
         return True
 
     def __attach_disks(self, entity):
+        if not self.param('disks'):
+            return
+
+        vm_service = self._service.service(entity.id)
         disks_service = self._connection.system_service().disks_service()
+        disk_attachments_service = vm_service.disk_attachments_service()
 
+        self._wait_for_vm_disks(vm_service)
         for disk in self.param('disks'):
             # If disk ID is not specified, find disk by name:
             disk_id = disk.get('id')
@@ -900,8 +917,8 @@ class VmsModule(BaseModule):
                 )
 
             # Attach disk to VM:
-            disk_attachments_service = self._service.service(entity.id).disk_attachments_service()
-            if get_entity(disk_attachments_service.attachment_service(disk_id)) is None:
+            disk_attachment = disk_attachments_service.attachment_service(disk_id)
+            if get_entity(disk_attachment) is None:
                 if not self._module.check_mode:
                     disk_attachments_service.add(
                         otypes.DiskAttachment(