Hi,
You can import regular qcow2 images into ovirt with few steps:
1)check what kind of image you have qemu-img -info vm4import.img
2) create an vm with exact disk image size as qemu-img -info shows.
3) run vm in paused mode(sometimes it is hard to find out the VM disk)
4) go to host where paused vm is running: find /rhev |grep "your vm uuid" and get your vm image UUID
5) do not use dd, use better
qemu-img convert -p -O raw $1 ${2} or
qemu-img convert -p -O qcow2 $1 ${2}
Then poweroff the paused vm and start it.