docker run -itd -v test3:/mnt --volume-driver blockbridge ubuntu bash

docker volume ls | grep test3
blockbridge         test3

docker inspect d4ce187069fbab76bf177e0476ed7d30ab85d2fee6b8ec43d0e96a922c87766e
    "Mounts": [
        {
            "Name": "test3",
            "Source": "/bb/mnt/test3",
            "Destination": "/mnt",
            "Driver": "blockbridge",
            "Mode": "z",
            "RW": true
        }
    ],