Hi!
I'm a quite C newbie, but for my school-project I need something to be
done with device-mapper.
Problem is quite simple: I have a device-mapper device ( in /dev/mapper
) and I must find out which loop ( or actually whatever ) device is
behind that mapper-device device.
Example: status output with cryptsetup
# cryptsetup status /dev/mapper/secret10
/dev/mapper//dev/mapper/secret10 is active:
cipher: aes-cbc-plain
keysize: 256 bits
device: /dev/loop/1
offset: 0 sectors
size: 917 sectors
mode: read/write
This device field is what I'm looking for. I have looked into dm-setup
and cryptsetup too, where libdevmapper.h is being used to get such
information, but those applications were quite advance for me to study.
So I seek documentation and maybe some simple examples to learn how to
use libdevmapper.h . I don't need full source-code solution for my
problem, but still I welcome anything that leads to the solution. Thanks
ahead!
Best wishes,
Taavi Ilves
