Without the fix:
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
This will hang at
Starting Reboot...
[ 178.033556] reboot: Restarting system
Without the fix it is stuck there, I verified off PPA
https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/4161 that
the fix helps as expected.
I do usually test "virsh shutdown" restart cycles.
This seems to indicate it might be worth to add
a) sudo reboot cycles
b) sudo reboot cycles after migration
This might excercise quite some code paths ...
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https://bugs.launchpad.net/bugs/1896751
Title:
Guest hang on reboot after migration from bionic to focal
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