Comment 1 for bug 1240804

Hi,

This is because the options are only registered after module instantiation.

This tool works by importing the module and relying on that to update the global configuration.

114 def __init__(self, *args, **kwargs):
115 super(VMwareEsxVmdkDriver, self).__init__(*args, **kwargs)
116 self.configuration.append_config_values(vmdk_opts)

If you take a look at other drivers, you'll see that they register opts in the global space, eg

 42 CONF = cfg.CONF
 43 CONF.register_opts(huawei_opt)