We have a base image and based thereon multiple copy-on-write images (qcow). There are many pages (e.g., this SO post) that explain how to resize an existing image. However, I couldn't find an explanation on how this will work in case that I'm using base images. Will resizing (making it larger) the base image break the COW images?
Let's assume I have a base image B1 and multiple COW images C1,...,CN. If I resize the base image and then allocate the new space on B1's main drive (sda), will C1,...,CN automatically be updated too, does this break these COW images, or which steps do I need to perform there to make this new space available?