[Solved] Headphones rock-on

Bugs
5

@MvL OK, that was it then. Good to get to the bottom of it.

It’s down to how docker stores it’s images when using a btrfs backend. Since docker images are composed of layers built on top of one another the docker system can use the btrfs snapshots mechanism (or OverlayFS) to store and share these image snapshots between a number of docker containers. It’s not a waste of space but an efficient use of it.

From the above link: https://docs.docker.com/engine/userguide/storagedriver/btrfs-driver/#the-future-of-btrfs
we have:
“Docker leverages Btrfs subvolumes and snapshots for managing the on-disk components of image and container layers.”

Linking to a related thread on this in the forum:

and

Given @suman 's response in the later I suspect that there is some improvements to be made, ie I think of late docker has added some ‘clean up’ features that we should be able to enable in the background in time, ie:

docker system df
docker system prune

And a more recently forum thread:

I though we had a current issue open on this but can’t find it so I have created one in the docs repo as a start:

Hope that helps.