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-rw-r--r--tests/qemu-iotests/common.rc4
1 files changed, 4 insertions, 0 deletions
diff --git a/tests/qemu-iotests/common.rc b/tests/qemu-iotests/common.rc
index 6ef6b512e3..0a7ba006e5 100644
--- a/tests/qemu-iotests/common.rc
+++ b/tests/qemu-iotests/common.rc
@@ -55,6 +55,10 @@ _make_test_img()
# at least one argument (the image size) needs to be added
local extra_img_options=$*
+ if [ "$IMGFMT" = "qcow2" -a -n "$CLUSTER_SIZE" ]; then
+ extra_img_options="-o cluster_size=$CLUSTER_SIZE $extra_img_options"
+ fi
+
# XXX(hch): have global image options?
$QEMU_IMG create -f $IMGFMT $TEST_IMG $extra_img_options | \
sed -e "s#$TEST_DIR#TEST_DIR#g" | \