[17.03] Error mounting NFS volume when creating service: read-only file system

Hello,

I’m getting an error I don’t understand when trying to create a service and mounting
an NFS volume.

$ docker service create --mount 'type=volume,target=/mnt,volume-driver=local,volume-opt=type=nfs,volume-opt=device=10.30.216.171:/shares/sw,"volume-opt=o=addr=10.30.216.171,ro"' --name fedora1 fedora /bin/bash
2rq5ey158alq7w4p2fmvtb0wt
burkm@astatine:~ $ docker service ps --no-trunc fedora1
ID                         NAME           IMAGE                                                                                  NODE                        DESIRED STATE  CURRENT STATE          ERROR                                                                                                                          PORTS
7hyn9t4x2il8gsnt3fn4nths5  fedora1.1      fedora:latest@sha256:8d3f642aa4d3fa8f9dc52ab0e3bbbe8bc2494843dc6ebb26c4a6958db888e5a2  beryllium.example.com  Ready          Rejected 1 second ago  "chown /var/lib/docker/volumes/62432f95250cd875cdb58ed62c417709e3b3df453c6cff40a35fd3edd39f442d/_data: read-only file system"
x47yiy8jhqhhnc9ugv53ex6eu   \_ fedora1.1  fedora:latest@sha256:8d3f642aa4d3fa8f9dc52ab0e3bbbe8bc2494843dc6ebb26c4a6958db888e5a2  beryllium.example.com  Shutdown       Rejected 1 second ago  "chown /var/lib/docker/volumes/2e300ff43e02d428c2d0375a69947c5d94aaf74e4050b021a64f8c7bde435542/_data: read-only file system"

The volume it is referring to doesn’t exist either, so I can’t inspect it.
Any ideas?