Yes, it is still possible to create an instance after changing only the delete method. The generated libvirt domain XML looks like this:
<os> <type arch='aarch64' machine='virt'>hvm</type> <loader readonly='yes' type='pflash'>/usr/share/AAVMF/AAVMF_CODE.fd</loader> <nvram template='/usr/share/AAVMF/AAVMF_CODE.fd'>/var/lib/libvirt/qemu/nvram/instance-00000005_VARS.fd</nvram> <boot dev='hd'/> </os> That is, the nvram file is copied from a global template to an instance- specific file -- it's that file under /var/lib/libvirt/qemu/nvram that VIR_DOMAIN_UNDEFINE_NVRAM removes. It should arguably be using template=AAVMF_VARS.fd rather than AAVMF_CODE.fd, but that's unrelated to this and doesn't really matter. The most annoying part of this change is feature detection. I think delete_configuration might have to know to try unsetting flags until the method works, as older libvirts don't support VIR_DOMAIN_UNDEFINE_NVRAM and I can't see a way to test at runtime. But in our environment we know the libvirt version, so we just pass the flag in unconditionally. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1567807 Title: nova delete doesn't work with EFI booted VMs To manage notifications about this bug go to: https://bugs.launchpad.net/nova/+bug/1567807/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs