Docker cp does not work if volume is on NFS share

[intdel]

Summary

Using docker cp through a container whose volume is on an NFS share fails.

Environment information

VIC created with --volume-store "nfs://10.2.0.2/export/containerSSD?uid=0&gid=0:default"

Then volume created with "docker volume create hey"
Then container started like this: "docker run -ti -v hey:/mnt/hey -d --name ubuntu ubuntu"
With docker attach I was able to create a file in /mnt/hey and verified it on the NAS.

Now I tried to do: "docker cp ubuntu:/mnt/hey/wow ."

but it just says:
"Error response from daemon: Server error from portlayer: [HEAD /archive][500] statPathInternalServerError"

I know it works if I put my volumes on the datastore instead.

vSphere and vCenter Server version

6.7

VIC version

V1.5.4-21221-B3D3B06F

VCH configuration

VIC created with --volume-store "nfs://10.2.0.2/export/containerSSD?uid=0&gid=0:default"

Details

Steps to reproduce

Actual behavior

Expected behavior

Logs

Feb 28 2020 14:31:59.131Z ERROR op=246.62.81: Error getting data source: NFS VolumeStore does not yet implement NewDataSource
Feb 28 2020 14:31:59.978Z ERROR op=246.64.82: Error getting data source: NFS VolumeStore does not yet implement NewDataSource
Feb 28 2020 14:33:44.099Z ERROR op=246.66.83: Error getting data source: NFS VolumeStore does not yet implement NewDataSource