Where are Docker images stored on the host machine?

Question

I managed to find the containers under directory /var/lib/docker/containers, but I can\'t find the images.

What are the directories and files under

Answer 1

Actually, Docker images are stored in two files as shown by following command

$ docker info

Data file: /var/lib/docker/devicemapper/devicemapper/data

Metadata file: /var/lib/docker/devicemapper/devicemapper/metadata

Answer 2

For someone who is using Docker toolbox (that uses docker-machine), the answers concerning boot2docker on Mac OS X is not valid. The docker-machine VM is called "default" and it exists in the /Users/<username>/.docker/machine/machines/default/ directory.

Answer 3

On Fedora, Docker uses LVM for storage if available. On my system docker info shows:

Storage Driver: devicemapper
 Pool Name: vg01-docker--pool
 Pool Blocksize: 524.3 kB
 Base Device Size: 10.74 GB
 Backing Filesystem: xfs
 Data file:
 Metadata file:
 Data Space Used: 9.622 GB
 ...

In that case, to increase storage, you will have to use LVM command line tools or compatible partition managers like blivet.

Answer 4

The images are stored in /var/lib/docker/graph/<id>/layer.

Note that images are just diffs from the parent image. The parent ID is stored with the image's metadata /var/lib/docker/graph/<id>/json.

When you docker run an image. AUFS will 'merge' all layers into one usable file system.

Answer 5

sudo docker info | grep -e "Root Dir"

Answer 6

check for the docker folder in /var/lib

the images are stored at below location:

/var/lib/docker/image/overlay2/imagedb/content