Last successful run was https://openqa.opensuse.org/tests/2934162#step/nested_vm/42 (yesterday) we can see the warning about no os detected there too. but I just see that this is even weirder The test actually does: * Boot a Leap 15.2 disk image <-- I missed that before * Installs libvirtd (plus deps) * Calls those virt-install/virt-list commands So at this stage, there is really no way the Tumbleweed update could influence the failure. The test would then continue to update the 15.2 image to a TW, and perform a check if the nested_vm is still listed (so if it survived the upgrade) Now, I have to admit I have no clue (yet) why the first one inside a (not modified, and hopefully no updates published) 15.2 image would start to fail.