Some general comments on using the patch: * For libguestfs I chose to add -compat deprecated-input=reject,deprecated-output=hide This is only enabled in developer builds of libguestfs when we are running qemu directly (not via libvirt). The patch for this is attached. * What's the point/difference in having reject vs crash? * I hope that by hiding deprecated QAPI fields we may detect errors in libguestfs, but I suspect what'll happen is it'll cause fall-back behaviour which might be harder to detect. * Be *really* good to have this for command line parameters! Notes on the attached patch: * https://libguestfs.org/guestfs-building.1.html * Simple test: LIBGUESTFS_BACKEND=direct \ LIBGUESTFS_HV=~/d/qemu/build/x86_64-softmmu/qemu-system-x86_64 \ ./run libguestfs-test-tool * Run the full test suite: LIBGUESTFS_HV=~/d/qemu/build/x86_64-softmmu/qemu-system-x86_64 \ make -k check-direct Rich. -- Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones Read my programming and virtualization blog: http://rwmj.wordpress.com Fedora Windows cross-compiler. Compile Windows programs, test, and build Windows installers. Over 100 libraries supported. http://fedoraproject.org/wiki/MinGW