Operation not permitted with local nfs export

[Jaykah]

I am trying to mount a locally exported NFS share, but am getting permissions errors every time:

root@ubuntu:/home/user# docker run -i -t --volume-driver=nfs -v 127.0.0.1/mnt/info:/tmp ubuntu /bin/bash
docker: Error response from daemon: chown /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info: operation not permitted.

DEBU[0141] Host path for 127.0.0.1/mnt/info is at /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
DEBU[0141] Entering Mount: {127.0.0.1/mnt/info map[]}
INFO[0141] Mounting NFS volume 127.0.0.1:/mnt/info on /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
DEBU[0141] Mounting with NFSv4 - src: 127.0.0.1:/mnt/info, dest: /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
DEBU[0141] exec: mount -v -t nfs4 127.0.0.1:/mnt/info /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info

DEBU[0142] Entering Unmount: {127.0.0.1/mnt/info map[]}
INFO[0142] Unmounting volume name 127.0.0.1/mnt/info from /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
INFO[0142] Removing un-managed volume

What is curious is that if I mount directly it works:

root@ubuntu:/home/user# mount -v -t nfs4 127.0.0.1:/mnt/info /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
mount.nfs4: mount point /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info does not exist
root@ubuntu:/home/user# mkdir /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
root@ubuntu:/home/user# mount -v -t nfs4 127.0.0.1:/mnt/info /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
mount.nfs4: timeout set for Fri Sep  2 16:04:45 2016
mount.nfs4: trying text-based options 'addr=127.0.0.1,clientaddr=127.0.0.1'
root@ubuntu:/home/user# ls  /var/lib/docker-volumes/netshare/nfs/127.0.0.1/mnt/info
README

What am I doing wrong?

[gondor]

Looks like netshare is not running as root? It must have rights to create the directory the mount is going too and since it runs as a system process it typically needs root.

[Jaykah]

Running as root.

[Jaykah]

4.4.0-36-generic
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04 LTS"

[Jaykah]

Let me know if I can provide any additional information pertaining to the issue at hand.

[Jaykah]

Is anyone successfully using Netshare for NFS exports?