[Libguestfs] Using nested partition with LUKS+GPT

[Philippe Midol-Monnet]

Hi

I have already fulfill a an issue, but it looks like it's not the 
recommended process.

We are using a LUKS partition containing a GPT table and several partions.

With libguestfs we can open the LUKS partition and the 
|/dev/mapper/<mapname>| device become available, but nested partition 
are not seen by the kernel. |partprobe| need to be run (or may be 
kpartx) to make partitions available in |/dev/mapper|.

AFAIK there are no simple solution.
As a workaround we use |guestfs_debug| but it's not a long term solution.

We can see two solutions:

  * adding a udev rule that will automatically run partpobe when a new
    device appeared in /dev/mapper
  * adding a new API in libguestfs |guestfs_partprobe(device)| that can
    be call by the user when needed.

What is the best best solution from your point of view?
We can help implementing it.

Regards

Philippe Midol-Monnet


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