** Description changed: - When migrating a guest from a bionic host to a focal host, the guest may - hang during reboot. This is due to an upstream optimization that skips - ROM reset on incoming migrations. + [Impact] + + * Upstream skipped rom resets which turned out to affect the + rebootability of guests migrated onto the new systems. + + * backport a fix of 5.0 to Focal to fix issues with those guests. + + [Test Case] + + 1. spawn guest on bionic + $ uvt-kvm create --password ubuntu testguest arch=amd64 release=bionic label=daily + 2. migrate it over to a focal system + $ virsh migrate --live testguest qemu+ssh://10.102.141.223/system + 3. check on focal if the guest arrived e.g. log in + $ virsh console testguest + testguest login: ubuntu + Password: + 4. reboot the guest + ubuntu@testguest:~$ sudo reboot + + Without the fix it will hang, with the fix the reboot succeeds + + [Regression Potential] + + * The area of guest start/restart is the most likely place for any + unexpected effects to happen. We will run the tests mentioned above + plus regression tests. + + [Other Info] + + * added this kind of test to the TODO list of the regression tests + * If affected you can migrate the guest even Focal->fixed-Focal and then + it should be able to restart + + + --- + + + + When migrating a guest from a bionic host to a focal host, the guest may hang during reboot. This is due to an upstream optimization that skips ROM reset on incoming migrations. Full details and patch in: https://github.com/qemu/qemu/commit/5073b5d3ea303d37f4a8e2ea451d7a2eb1817448 https://bugzilla.redhat.com/show_bug.cgi?id=1809380
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1896751 Title: Guest hang on reboot after migration from bionic to focal To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1896751/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
