Virtual machine disk space in Docker for Windows beta

Question

In my old docker container, created with the docker toolbox on Windows I was able to use the

docker-machine create -d virtualbox --virtualbox-disk-size 50000 default

command to create the container with more disk space as I have big images stored in it and "create another environment" next to the default.

Since the upgrade to the Docker 1.12.0 beta18 from the old Docker Toolbox I have no idea how to do that and I am facing the "low disk space" problem. Does anyone have a simple soln to this? Thanks in advance.

Answer 1

The MobyLinux Hyper-V machine is provisioned on first start of docker on your computer.

There is no way to change the original 60GB size by configuration, how is stated inside the C:\Program Files\Docker\Docker\resources\MobyLinux.ps1 (powershell script):

# Hard coded for now

$global:VhdSize = 60*1024*1024*1024  # 60GB

So, the solution was to change this line to

$global:VhdSize = 120*1024*1024*1024  # 120GB

This worked for me. You need however to reset your docker, causing it to provision again the hyper-v machine.