Am 03.05.2021 um 23:36 hat Eric Blake geschrieben: > @@ -17,7 +14,7 @@ qemu-io: can't open device TEST_DIR/t.qcow2: Could not open backing file: Unknow > no file open, try 'help open' > read 4096/4096 bytes at offset 0 > 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) > -qemu-img: warning: Deprecated use of backing file without explicit backing format, use of this image requires potentially unsafe format probing > +qemu-img: Could not change the backing file to '/home/eblake/qemu/build/tests/qemu-iotests/scratch/t.qcow2.base': Invalid argument > read 4096/4096 bytes at offset 0 > 4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) This is not exactly an improvement for the error message. Maybe worth a follow-up patch? Kevin
