Qubes OS release

Qubes OS 4.2

Brief summary

Changing template is blocked if there are descendants running. In this case, preloaded disposables are always up and many current actions need a workaround that should be done transparently.

Code changes in

• qubes-core-admin
• qubes-manager

Steps to reproduce

1. qubes-prefs default-template fedora-42-xfce
2. qvm-features dom0 preload-dispvm-max 1
3. qubes-prefs default-template debian-13-xfce

Expected behavior

Able to switch templates if the only running qubes are preloaded disposables.

Actual behavior

Not able to switch templates.

https://openqa.qubes-os.org/tests/152980#step/switch_template/13

Additional information

• Changing disposable template property template_for_dispvms
• Changing template of disposable template
• Renaming template via qube manager
• Renaming disposable template via qube manager
• Removing disposable template via qube manager
• Shutting down AudioVM
• Shutting down NetVM