> Is there any device-mapper or libdevmapper documentation? If so, please > point me to some, it might answer my question. > dmsetup.c is the doc you need to read :) > Looking over the control node kernel IOCTL code, it seems that given a > block device major/minor, there is no direct way to find out the > device-mapper name or uuid, unless I've missed something. > > Does it make sense to have this? Would it make sense for the dm block > devices to support such an IOCTL, so a simple ioctl() on a block device > would reveal it's device-mapper id? > > I've seen some ways to do this, and it's a huge ammount of (userspace) > code for what is probably a 3 line ioctl. Would a patch be welcome? > You'd be best served if the device-mapper pseudo-filesystem gets buried out someday. regards, cvaroqui
