1 files changed, 76 insertions, 0 deletions
diff --git a/tests/qemu-iotests/273 b/tests/qemu-iotests/273
new file mode 100755
index 0000000000..98a672516d
--- /dev/null
+++ b/tests/qemu-iotests/273
@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+#
+# Test multiple blockdev-snapshot calls with 'backing': null
+#
+# Copyright (C) 2019 Red Hat, Inc.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+#
+
+seq=$(basename "$0")
+echo "QA output created by $seq"
+
+status=1	# failure is the default!
+
+_cleanup()
+{
+    _cleanup_test_img
+}
+trap "_cleanup; exit \$status" 0 1 2 3 15
+
+# get standard environment, filters and checks
+. ./common.rc
+. ./common.filter
+
+# This is a qcow2 regression test
+_supported_fmt qcow2
+_supported_proto file
+_supported_os Linux
+
+do_run_qemu()
+{
+    echo Testing: "$@"
+    $QEMU -nographic -qmp-pretty stdio -nodefaults "$@"
+    echo
+}
+
+run_qemu()
+{
+    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_qmp |
+        _filter_generated_node_ids | _filter_imgfmt | _filter_actual_image_size
+}
+
+TEST_IMG="$TEST_IMG.base" _make_test_img 64M
+TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
+_make_test_img -b "$TEST_IMG.mid"
+
+run_qemu \
+    -blockdev file,node-name=base,filename="$TEST_IMG.base" \
+     -blockdev file,node-name=midf,filename="$TEST_IMG.mid" \
+     -blockdev '{"driver":"qcow2","node-name":"mid","file":"midf","backing":null}' \
+     -blockdev file,node-name=topf,filename="$TEST_IMG" \
+     -blockdev '{"driver":"qcow2","file":"topf","node-name":"top","backing":null}' \
+<<EOF
+{"execute":"qmp_capabilities"}
+{"execute":"blockdev-snapshot","arguments":{"node":"base","overlay":"mid"}}
+{"execute":"blockdev-snapshot","arguments":{"node":"mid","overlay":"top"}}
+{"execute":"query-named-block-nodes"}
+{"execute":"x-debug-query-block-graph"}
+{"execute":"quit"}
+EOF
+
+# success, all done
+echo "*** done"
+rm -f $seq.full
+status=0