On Mon, Mar 19, 2018 at 07:36:50PM +0100, Jonas Rabenstein wrote: > Allow modification of the shadow mbr. If the shadow mbr is not marked as > done, this data will be presented read only as the device content. Only > after marking the shadow mbr as done and unlocking a locking range the > actual content is accessible. I hate doing this as an ioctls. Can we make this a sysfs binary file so that people can use dd or cat to write the shadow mbr?