[fedora-virt] Change format of backing file?

[Tom Horsley]

Just curious here. Say I have a qcow2 image named outer.qcow2
and it has a raw format backing_file named inner.img.

If I do something like

qemu-img convert -f raw -O qcow2 inner.img new-inner.img
rm -f inner.img
mv new-inner.img inner.img

(in other words convert the backing file from raw to
qcow2)

What are the odds that outer.qcow2 will still be usable?

(Like I say - random curiosity here :-).