Comment # 31 on bug 1093372 from Ancor Gonzalez Sosa

Let me share a tip for anyone playing with the control file settings to
fine-tune the partitioning (Richard, in this case).

If you have a local checkout of the yast-storage-ng repository[1], you can
execute this to see how the Guided Setup (and its initial attempt) works in any
scenario based on your local modified control file (assuming you are executing
this from the root path of your local copy of the repo):

Y2DIR=src/ /sbin/yast2 proposal_testing a_system_description.yml
your_control.xml

In the test/data/devicegraphs directory of the repo you have many examples of
systems with different disks (including sizes, types and content of such
disks). And creating a new one is quite simple following the same Yaml syntax.
So you can execute something like this:

Y2DIR=src/ /sbin/yast2 proposal_testing test/data/devicegraphs/empty_disks.yml
your_control.xml

Way quicker and more flexible than testing the changes in a real installation

[1] https://github.com/yast/yast-storage-ng/