Hi, Is my first email to that list ;)
I can reproduce this bug with v2.2 and v2.3. I'm not sure about the results after testing with v2.1 (doesn't show errors but seems to be still broken). % qemu-img convert -f raw -O vmdk -o subformat=streamOptimized 100GB_inputfile.img outputfile0.vmdk (no shown errors/warnings/info) % qemu-img convert -f vmdk -O qcow2 outputfile0.vmdk outputfile11.qcow2 qemu-img: error while reading sector 278528: Invalid argument Let me know if I can provide you more info. Regards -- Antoni Villalonga http://friki.cat/