Now all of the storage drivers use the field "storage-driver" in their log messages, which is set to name of the respective driver. Storage drivers changed: - Aufs - Btrfs - Devicemapper - Overlay - Overlay 2 - Zfs Signed-off-by: Alejandro GonzÃlez Hevia <alejandrgh11@gmail.com> Upstream-commit: 9392838150f5495a63f33fed6570ae41f5a6d62e Component: engine