How to share data between container (same service)

[bdpv]

I find this discussion (without really answer in it ) about my problem :

How to create global volumes in docker 1.12

Following this documentation guide on creating volumes in docker 1.12 I attempted to make a global docker volume (which I heard about from here), but any information on global volumes is not present in the documentation. I am looking to make a volume, which my docker service containers can mount, that is shared between all the nodes in my docker swarm cluster. Where can I find documentation on how to do this?