On Mon, May 24, 2021 at 4:07 AM Chris Murphy <lists@colorremedies.com> wrote:
On Sun, May 23, 2021 at 11:25 AM Marco Guazzone
<marco.guazzone@gmail.com> wrote:
>
...
>
> Do you have any suggestions?

There's definitely a trick. The installer normally enforces
reformatting a partition/LV for sysroot. Btrfs gets an exception by
merely enforcing creation of a new subvolume on an existing Btrfs file
system for sysroot. The way to do that is to create a new / mount
point rather than clicking on an existing one; also helpful is to not
specify a size for this mount point, just leave that 2nd field empty.

There is a test case that describes this in detail and hopefully
someone will turn it into a quickdoc. (It's on my to do list but I'm
not sure when I'm going to get around to it.
https://fedoraproject.org/wiki/QA:Testcase_partitioning_custom_btrfs_preserve_home


Thanks a lot, Chris!

That page is exactly what I was looking for.
I followed each step and all went OK.
In case that document is targeted also to inexperienced users, I would suggest the following changes:
* Step 5: specify to click on "Done" after selecting "Custom"
* Step 10: specify how to remove the "root" subvolume, also mentioning what to do when the dialog box "Are you sure you want to delete all of the data on root?" appears.

Thank you.
Best regards,
Marco