I think, that is not a problem with a service, but xl process. I do not know, how to simulate an obsolete xl.
I restated xen.service on a Ubuntu 16 and 20, that was no problem. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1946094 Title: VMs crash when updating systemd To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xen/+bug/1946094/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs