https://github.com/fermayo/imagefs

[POC] Volume driver for Docker to mount image layers in containers
https://github.com/fermayo/imagefs

docker docker-plugin

Last synced: 7 months ago
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[POC] Volume driver for Docker to mount image layers in containers

• Host: GitHub
• URL: https://github.com/fermayo/imagefs
• Owner: fermayo
• Created: 2017-02-10T22:57:34.000Z (about 9 years ago)
• Default Branch: master
• Last Pushed: 2017-02-17T05:37:44.000Z (almost 9 years ago)
• Last Synced: 2025-01-02T13:28:24.587Z (about 1 year ago)
• Topics: docker, docker-plugin
• Language: Go
• Homepage:
• Size: 4.88 KB
• Stars: 1
• Watchers: 3
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# fermayo/imagefs

**POC ONLY**

Volume plugin to mount images into containers

## Usage

Run the plugin as a service on a swarm:

    $ docker service create \

        --name imagefs \

        --mode global \

        --mount type=bind,source=/var/run/docker.sock,destination=/var/run/docker.sock \

        --mount type=bind,source=/var/run/docker/plugins,destination=/run/docker/plugins \

        --mount type=bind,source=/var/lib/docker,destination=/var/lib/docker \

        fermayo/imagefs:latest

Now you will see all your local images as volumes:

    $ docker volume ls

    DRIVER                   VOLUME NAME

    imagefs                  2941e8b0086fa6140c59523fb12865461e8c6adeab50732a05a6fe4a886ef836

    imagefs                  5745de9bbf7c7cbabbc7dee2da35ade343f59ff07ce02787a10dfaa6a935efd7

    imagefs                  71fd841bdcb61b4e91d6d4b6df030f9371ac9dbef27e51c1a5994c38c63c7c44

    imagefs                  7afbc2b03b9e6259c8b85457ca94490a1856d13a798ec0040c423543b66a9511

    imagefs                  88e169ea8f46ff0d0df784b1b254a15ecfaf045aee1856dca1ec242fdd231ddd

    imagefs                  ad974e767ec4f06945b1e7ffdfc57bd10e06baf66cdaf5a003e0e6a36924e30b

    imagefs                  d34c8c7c784a39e07cd7978a4f541bde3666ced2b5b7b6c7509b161fc4a6ae64

    imagefs                  f49eec89601e8484026a8ed97be00f14db75339925fad17b440976cffcbfb88a

    

You can mount any image on your container:

    $ docker run -it -v 88e169ea8f46ff0d0df784b1b254a15ecfaf045aee1856dca1ec242fdd231ddd:/tmp:ro ubuntu cat /tmp/etc/os-release

    NAME="Alpine Linux"

    ID=alpine

    VERSION_ID=3.5.0

    PRETTY_NAME="Alpine Linux v3.5"

    HOME_URL="http://alpinelinux.org"

    BUG_REPORT_URL="http://bugs.alpinelinux.org"

## Limitations

* Does not pull layers that are not present locally in the node

* Only mounts one layer at a time (does not mount parent layers)

* Does not prevent writes to the image (does not have a write layer on top)

* Only supports overlay2 graphdriver