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-rwxr-xr-xtests/qemu-iotests/11414
1 files changed, 14 insertions, 0 deletions
diff --git a/tests/qemu-iotests/114 b/tests/qemu-iotests/114
index 26104fff6c..5a7b0a4998 100755
--- a/tests/qemu-iotests/114
+++ b/tests/qemu-iotests/114
@@ -39,12 +39,21 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
_supported_fmt qcow2
_supported_proto generic
_unsupported_proto vxhs
+# At least OpenBSD doesn't seem to have truncate
+_supported_os Linux
# qcow2.py does not work too well with external data files
_unsupported_imgopts data_file
+# Intentionally specify backing file without backing format; demonstrate
+# the difference in warning messages when backing file could be probed.
+# Note that only a non-raw probe result will affect the resulting image.
+truncate -s $((64 * 1024 * 1024)) "$TEST_IMG.orig"
+_make_test_img -b "$TEST_IMG.orig" 64M
TEST_IMG="$TEST_IMG.base" _make_test_img 64M
+$QEMU_IMG convert -O qcow2 -B "$TEST_IMG.orig" "$TEST_IMG.orig" "$TEST_IMG"
_make_test_img -b "$TEST_IMG.base" 64M
+_make_test_img -u -b "$TEST_IMG.base" 64M
# Set an invalid backing file format
$PYTHON qcow2.py "$TEST_IMG" add-header-ext 0xE2792ACA "foo"
@@ -55,6 +64,11 @@ _img_info
$QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
$QEMU_IO -c "open -o backing.driver=$IMGFMT $TEST_IMG" -c "read 0 4k" | _filter_qemu_io
+# Rebase the image, to show that omitting backing format triggers a warning,
+# but probing now lets us use the backing file.
+$QEMU_IMG rebase -u -b "$TEST_IMG.base" "$TEST_IMG"
+$QEMU_IO -c "open $TEST_IMG" -c "read 0 4k" 2>&1 | _filter_qemu_io | _filter_testdir
+
# success, all done
echo '*** done'
rm -f $seq.full