LVM, device-mapper and the Linux kernel

Hi!

Is there some documentation available about the interactions between LVM, device-mapper and the Linux kernel? (Apart from only reading the source code, which I'll--of course--also (have to) do.)

I know how to handle the tools from a user's perspective, but now I'm about to try to introduce the world of Logical Volume Management to GNU/Hurd, hopefully basing my effort on the already existing code base.

Any pointers?

Regards,
Thomas

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