On Mon 12 Feb 2018 02:14:00 PM CET, Anton Nefedov wrote:
+# Trigger truncate that would shrink qcow2 L1 table, which is done by
+# clearing one entry (8 bytes) with bdrv_co_pwrite_zeroes()
+
+echo
+echo "=== Test misaligned write zeroes via truncate ==="
+echo
+
+CLUSTER_SIZE=$((64 * 1024))
+L2_COVERAGE=$(($CLUSTER_SIZE * $CLUSTER_SIZE / 8))
+_make_test_img $(($L2_COVERAGE * 2))
If my numbers are correct, that's a 1GB image. For qcow2 this is not a
problem but I wonder if it's ok to create such large images for other
formats (for raw they should be sparse by default, but still).
Berto