docker start failed after adding daemon.json file

This error is pointing to an issue forcing docker to use overlay2 without the proper backing filesystem:

failed to start daemon: error initializing graphdriver: overlay2: the backing xfs filesystem is formatted without d_type

See docker's table for details on backing filesystem requirements for the different storage drivers: https://docs.docker.com/storage/storagedriver/#supported-backing-filesystems

The fix is to remove the storage driver settings, or fix the backing filesystem with the needed options to support overlay2:

  {    "exec-opts": ["native.cgroupdriver=systemd"],    "log-driver": "json-file",    "log-opts": {      "max-size": "100m"    }  }

For details on changing the xfs options, that appears to require rebuilding the filesystem. See this answer for more details on the needed steps.

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