DeviceMapper must be explicitly selected because the Docker binary might not be linked to the right devmapper library.
With this change, Docker fails fast if the driver detection finds the devicemapper directory but the driver is not the default option.
The option `override_udev_sync_check` doesn't make sense anymore, since the user must be explicit to select devicemapper, so it's being removed.
Docker fails to use devicemapper only if Docker has been built statically unless the option was explicit.
Signed-off-by: David Calavera <david.calavera@gmail.com>
Upstream-commit: 0a376291b2213699f986a7bca1cc8c4f4ed00f8d
Component: engine
Adding in other areas per comments
Updating with comments; equalizing generating man page info
Updating with duglin's comments
Doug is right here again;fixing.
Signed-off-by: Mary Anthony <mary@docker.com>
Upstream-commit: eacae64bd89ccc95a6db7bda76d36014e71e70ac
Component: engine
David Calavera
Mary Anthony
TAGOMORI Satoshi