Created attachment 997118 [details] verbose output from virt-builder Description of problem: virt-builder: error: get-kernel: no operating system found Version-Release number of selected component (if applicable): 1.29.26 How reproducible: 100% Steps to Reproduce: 1. wget http://mirrors.nic.cz/fedora-secondary/releases/21/Server/ppc64/iso/Fedora-Server-netinst-ppc64-21.iso 2. virt-builder --get-kernel Fedora-Server-netinst-ppc64-21.iso 3.
... libguestfs: trace: inspect_os = [] Inspection is failing to find any installers in the disk image. As it's an installer, not a full operating system, virt-builder --get-kernel isn't expected to work. Nevertheless it would be nice for inspection not to fail. The easiest thing is to grab the ISO, run `isoinfo' on it, and supply the information to the libosinfo project (check that they don't have it already), since for installer disks libguestfs now uses data from libosinfo to identify them.