What were you trying to do that didn't work?

To get the possible roots for the virt-v2v we need to run the virt-inspector. But we can't run the virt-inspector on the vmware disks directly without using the nbdkit. As an alternative, there is the virt-v2v-inspector, which runs on the VMware diks and does even the guest conversion but does not output the list of roots as the virt-inspector. It only outputs the one operating system and its root, which was converted. 

Could we get the list of available roots from the virt-v2v-inspector so the users could choose which root should be converted?

What is the impact of this issue to you?

This is blocking the MTV-2431, where we would want to run the inspection even before starting the migration plan. We would want to try if the VM could be converted and get the information.