QA:Testcase partitioning blivet btrfs preserve home

Associated release criterion
This test case is associated with the Fedora_42_Beta_Release_Criteria#Custom_partitioning release criterion. If you are doing release validation testing, a failure of this test case may be a breach of that release criterion. If so, please file a bug and nominate it as blocking the appropriate milestone, using the blocker bug nomination page.

Description

This test case ensures that the data in the /home directory is retained and usable on a Btrfs layout after another Fedora is installed on the same partition.

Setup

1. Install Fedora 41 or 42 from any Edition or Spin which uses Btrfs filesystem by default. Use Automatic storage configuration during disk partitioning.
2. On the installed system, create some distinct files and directories in your home directory or directly in /home

How to test

1. Select a Fedora 42 installer for any Edition or Spin which uses Btrfs filesystem by default.
2. Boot the GTK-based installer using any available means. Do not use Fedora Workstation live on Fedora 41+, as that uses the webui-based installer.
3. Proceed to the installer's main screen, making sensible choices, and enter the Installation Destination screen.
4. In Installation Destination, click Advanced Custom (Blivet-GUI) under Storage Configuration
5. Under Btrfs Volumes, locate the previous Fedora installation, click on it to reveal existing mount points for reuse
6. Select appropirte mount point looks like 00/var/lib/machines, right click and delete it.
7. Select home mount point, right click, Click Edit and find Set Mountpoint field, type in /home, click Set Mountpoint button.
8. Click + button to create a new / mount point (NOTE: this is required to be a new subvolume. Optional: change the name of the subvolume from root00 to rootkde or rootjam per your preference).. Click OK button.
   • Note: If you don't delete the previous root subvolume, the installer will create a new subvolume root00 mounted at /. If you delete the previous root subvolume first, the installer will use the same root name for the new one. Both approaches are valid, you can use whichever approach you choose. Other than consuming space, there is no disadvantage to keeping the old root.
9. Click Done
10. Perform the installation and reboot the machine. At the initial setup, it's recommended to use all the same settings as for the 1st installation.
11. After logging in, check that your home directory or /home contains the files you created on your previous system (check their contents as well)

Expected Results

1. The expected partition layout should be created on the target device(s).
2. The install process should complete successfully and the installed system should boot as expected.
3. Your personal files on your /home partition must be intact