LVM is just fancy orchestration for the device-mapper subsystem with some headers for setup information. For block operations it's no different from manual set

LVM is just fancy orchestration for the device-mapper subsystem with some headers for setup information. For block operations it's no different from manual setup of loop-mounted volumes, that also need to travel a couple of layers to hit the backing device. Though there is an important caveat - LVM is more abstracted, making it easier to mistakenly map a drive onto itself, which may create a spectacular failure (haven't tried).