Hi,
Actually I fixed it using the suggesion here How to specify different root directory for Docker on Linux - #5 by geoma
If this helps with others:
Stop docker
sudo service docker stop
Move old docker over to new drive
cp -r /var/lib/docker /drive/data/docker
Make a config file
sudo nano /etc/docker/daemon.json
Add the path to the new drive
{
"data-root": "/drive/data/docker"
}
Restart docker
sudo service docker start
Verify
docker info -f '{{ .DockerRootDir}}'
Then restart the webodm service