If we use growth_mode = metadata, it is very much possible that the file uses more disk space after we have written something to the added area. We did indeed want to test for this case, but unfortunately we evidently just copied the code from the "Test creation preallocation" section and forgot to replace "$create_mode" by "$growth_mode".
We never noticed because we only read the first number from qemu-img info's "disk size" output -- and that is effectively useless, because qemu-img prints a human-readable value (which generally includes a decimal point). That will be fixed in the patch after the next one. Signed-off-by: Max Reitz <mre...@redhat.com> --- tests/qemu-iotests/125 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tests/qemu-iotests/125 b/tests/qemu-iotests/125 index dc4b8f5fb9..df328a63a6 100755 --- a/tests/qemu-iotests/125 +++ b/tests/qemu-iotests/125 @@ -111,7 +111,7 @@ for GROWTH_SIZE in 16 48 80; do if [ $file_length_2 -gt $file_length_1 ]; then echo "ERROR (grow): Image length has grown from $file_length_1 to $file_length_2" fi - if [ $create_mode != metadata ]; then + if [ $growth_mode != metadata ]; then # The host size should not have grown either if [ $host_size_2 -gt $host_size_1 ]; then echo "ERROR (grow): Host size has grown from $host_size_1 to $host_size_2" -- 2.21.0