10:21:33 Package qemu-kvm-tools is obsoleted by qemu-kvm-tools-ev, trying to install 10:qemu-kvm-tools-ev-2.6.0-27.1.el7.x86_64 instead
10:21:48 Error creating Live CD : Failed to build transaction : 10:qemu-kvm-ev-2.6.0-27.1.el7.x86_64 requires usbredir >= 0.7.1
10:21:48 10:qemu-kvm-ev-2.6.0-27.1.el7.x86_64 requires seavgabios-bin >= 1.9.1-4
10:21:48 10:qemu-kvm-ev-2.6.0-27.1.el7.x86_64 requires ipxe-roms-qemu >= 20160127-4
10:21:48 10:qemu-kvm-ev-2.6.0-27.1.el7.x86_64 requires libusbx >= 1.0.19
10:21:48 ERROR: ISO build failed.