>
> where to find more details regarding reasons for failure? Other files on
> engine or should I see at host side?
There are two places you should look. One is vdsm.log on the host
performing the import. And if you have oVirt 4.1 another place to look
at is /var/log/vdsm/import where the import logs are stored.
> In case I have to import a windows VM ova, which iso should I attach near
> the "Attach VirtIO-Drivers" checkbox? Any "official" iso? I
> downloaded oVirt-toolsSetup-4.1-3.fc24.iso but I don't know if it is the Install virtio-win package somewhere. In it, inside
> right iso for this.
/usr/share/virtio-win directory, you will find virtio-win-*.iso file.