FAQ

Contents

• 1   Docker gives the error "[graphdriver] prior storage driver \"aufs\" failed: driver not supported"
  • 1.1   If you care about your containers
  • 1.2   If you do not need to retain your containers

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This page provides answers to Frequently Asked Questions (and that's a FAQ! :-)

1   Docker gives the error "[graphdriver] prior storage driver \"aufs\" failed: driver not supported"

Docker will give this error if you try to start a container but:

• you modified the docker configuration manually from aufs to another storage driver (say, overlayfs using the dockerd option --storage-driver=overlay).
• your host kernel no longer supports the storage driver specified (aufs).

For the latter scenario...

1.1   If you care about your containers

• reboot using a kernel that does still support aufs (but take care if the kernel was updated due to security issues!)
• export the docker images/containers.
• reboot into the latest kernel (where dockerd will be using the modified storage driver).
• import the docker images/containers.
• restart the containers.

1.2   If you do not need to retain your containers

If you don't care about the containers you previously created using the aufs driver, you could consider deleting /var/lib/docker/ and restarting the docker service.