it seems that a volume driver gets asked if it knows about a volume name that is unknown to docker
ie, on a swarm node that hasn't had the named volume created, it will get a chance to say "me" in Get(r *volume.GetRequest)
so if Create on any node keeps a record of that volume in the seaweedfs etcd, then we can say yes on other nodes. this also means that List (i think) will magically work on all nodes, so YAY
it seems that a volume driver gets asked if it knows about a volume name that is unknown to docker
ie, on a swarm node that hasn't had the named volume created, it will get a chance to say "me" in
Get(r *volume.GetRequest)
so if Create on any node keeps a record of that volume in the seaweedfs etcd, then we can say yes on other nodes. this also means that List (i think) will magically work on all nodes, so YAY