Description of problem: Currently virt-v2v can import only RPM based linux guests. When attempting to import Ubuntu guest the import ends with an error: virt-v2v: error: virt-v2v is unable to convert this guest type(linux/ubuntu)
Update on the current status of this: - thanks to the work by Tomáš Golembiovský and myself, most of the basic work for Debian/Ubuntu guests is in, and the conversion is enabled since libguestfs >= 1.35.7 - the only known issue at this time is the lack of method to get and set the default kernel in Grub2 (neither grubby nor the Perl Bootloader module are available) - it might need further testing, especially with all the source hypervisors supported/tested/implemented (VMware, Xen, VirtualBox, Virtuozzo, etc), as they require tweaks (e.g. uninstallation/deconfiguration of tools)
Tomáš/Pino: What is the status of this upstream now? And is it sufficiently working that you are able to support it in RHEL 7.4?
Rich: more or less what was outlined in comment 1, if I didn't miss anything.
The only real issue is the lack of grub2 support from our side, as Pino wrote. That means the default kernel in guest has to have virtio drivers so the guest can boot after conversion. Besides that the feature is in pretty good shape IMHO.
Closing, this is upstream in 1.36.