On 11/8/24 11:04, Veiko Kukk wrote: > Hi! > Questions: > 1) Why does validation fail? How to debug it? Yeah, this is a genuine bug. > 2) Why doesn't libvirt create qcow2 v3 even when specifying compat > 1.1? When creating an image using virt-manager on the same libvirt > hypervisor host, v3 images are created. This one I couldn't reproduce with current master. I think it's because of this commit: https://gitlab.com/libvirt/libvirt/-/commit/f432114d9cf507a4047aa9dc1344b1c13356db08 libvirt.git $ git describe --contains f432114d9cf507a4047aa9dc1344b1c13356db08 v10.2.0-rc1~93 Michal