I try to get the odl-mdsal-clustering capability within our project. Our project uses mdsal (data store, etc ...). I run karaf and install clusteing features as it is mentioned in the running clustering in ODL website. But after adding node into our inventory when I restart the karaf I don't see nodes again. It seems they haven't been persisted into disk. My question is what I need to do to get this working? Is there anything else that I have missed like any configuration file to create? Or do we get data persistence with this basic configuration? Right now I just run one instance of ODL on one VM. And I just need to see the data persistence only.