I have installed CoreOS which by default using loop-back device with size of 100GB and I have reached that limit very easily.
My first idea was to place all the images on top of my NAS using NFS with simply mounting it on top of the
/var/lib/docker directory without any success.
Now I have found this article and its looks like docker creates block device in any way, on top of any kind of storage in order to use it's CoW snapshots and that's probably why I wasn't successful on my first shot with simply mounting NFS share on top of image directory. It kind of freaks me out. Why not use pure NFS with native snapshots of the storage? I hope there is good explanation of doing this. In any way I need to do this freak thing. I'm new to docker and CoreOS and do not know how to do this properly. So the question is: How to mount an NFS share and use it for all the images on CoreOS?