Public bug reported: Hi, I know that 12.04 is only "supported" via the ppa. But according to our IRC discussion I still file the bug so that we can focus and document the decisions here.
Background - when uvt creates images it uses the python libvirt bindings. It seems that these now create images with lazyy-refcount flag. Those cannot be read by the qemu in precise. The error will look like this: uvt-kvm: error: libvirt: internal error Process exited while reading console log output: char device redirected to /dev/pts/0 kvm: -drive file=/var/lib/uvtool/libvirt/images/kvmguest-precise.qcow,if=none,id=drive-virtio-disk0,format=qcow2: '' uses a qcow2 feature which is not supported by this qemu version: QCOW version 3 A good explanation on the details is at http://blog.wikichoon.com/2014/12/virt-manager-10-creates- qcow2-images.html ** Affects: uvtool (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1620633 Title: qcow image created in precise is not usable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/uvtool/+bug/1620633/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
