A quick grep on nova 2014.2.2 shows:
| nova/virt/images.py: cmd = ('qemu-img', 'convert', '-O', out_format, source, dest)
A quick grep on nova 2014.2.2 shows:
| nova/virt/ images. py: cmd = ('qemu-img', 'convert', '-O', out_format, source, dest)