1 files changed, 95 insertions, 0 deletions
diff --git a/tests/qemu-iotests/130 b/tests/qemu-iotests/130
new file mode 100755
index 0000000000..bc26247e3f
--- /dev/null
+++ b/tests/qemu-iotests/130
@@ -0,0 +1,95 @@
+#!/bin/bash
+#
+# Test that temporary backing file overrides (on the command line or in
+# blockdev-add) don't replace the original path stored in the image during
+# header updates.
+#
+# Copyright (C) 2015 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/>.
+#
+
+# creator
+owner=kwolf@redhat.com
+
+seq="$(basename $0)"
+echo "QA output created by $seq"
+
+here="$PWD"
+tmp=/tmp/$$
+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
+. ./common.qemu
+
+_supported_fmt qcow2
+_supported_proto generic
+_supported_os Linux
+
+qemu_comm_method="monitor"
+
+
+TEST_IMG="$TEST_IMG.orig" _make_test_img 64M
+TEST_IMG="$TEST_IMG.base" _make_test_img 64M
+_make_test_img 64M
+_img_info | _filter_img_info
+
+echo
+echo "=== HMP commit ==="
+echo
+# bdrv_make_empty() involves a header update for qcow2
+
+# Test that a backing file isn't written
+_launch_qemu -drive file="$TEST_IMG",backing.file.filename="$TEST_IMG.base"
+_send_qemu_cmd $QEMU_HANDLE "commit ide0-hd0" "(qemu)"
+_send_qemu_cmd $QEMU_HANDLE '' '(qemu)'
+_cleanup_qemu
+_img_info | _filter_img_info
+
+# Make sure that if there was a backing file that was just overridden on the
+# command line, that backing file is retained, with the right format
+_make_test_img -F raw -b "$TEST_IMG.orig" 64M
+_launch_qemu -drive file="$TEST_IMG",backing.file.filename="$TEST_IMG.base",backing.driver=$IMGFMT
+_send_qemu_cmd $QEMU_HANDLE "commit ide0-hd0" "(qemu)"
+_send_qemu_cmd $QEMU_HANDLE '' '(qemu)'
+_cleanup_qemu
+_img_info | _filter_img_info
+
+echo
+echo "=== Marking image dirty (lazy refcounts) ==="
+echo
+
+# Test that a backing file isn't written
+_make_test_img 64M
+$QEMU_IO -c "open -o backing.file.filename=$TEST_IMG.base,lazy-refcounts=on $TEST_IMG" -c "write 0 4k" | _filter_qemu_io
+_img_info | _filter_img_info
+
+# Make sure that if there was a backing file that was just overridden on the
+# command line, that backing file is retained, with the right format
+_make_test_img -F raw -b "$TEST_IMG.orig" 64M
+$QEMU_IO -c "open -o backing.file.filename=$TEST_IMG.base,backing.driver=$IMGFMT,lazy-refcounts=on $TEST_IMG" -c "write 0 4k" | _filter_qemu_io
+_img_info | _filter_img_info
+
+# success, all done
+echo '*** done'
+rm -f $seq.full
+status=0