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From f3eb0c097a879c9bc80a5a2589560b7ebde3720b Mon Sep 17 00:00:00 2001
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From: Miroslav Rezanina <mrezanin@redhat.com>
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Date: Tue, 5 Dec 2017 10:26:10 +0100
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Subject: [PATCH 35/36] qemu-iotests: Test change-backing-file command
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RH-Author: Kevin Wolf <kwolf@redhat.com>
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Message-id: <20171204121007.12964-8-kwolf@redhat.com>
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Patchwork-id: 78111
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O-Subject: [RHV-7.5 qemu-kvm-rhev PATCH v2 7/8] qemu-iotests: Test change-backing-file command
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Bugzilla: 1492178
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RH-Acked-by: Fam Zheng <famz@redhat.com>
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RH-Acked-by: Max Reitz <mreitz@redhat.com>
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RH-Acked-by: Jeffrey Cody <jcody@redhat.com>
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This involves a temporary read-write reopen if the backing file link in
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the middle of a backing file chain should be changed and is therefore a
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good test for the latest bdrv_reopen() vs. op blockers fixes.
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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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(cherry picked from commit 3fb23e07516aae13d1ba566740c1c81ae12184b7)
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Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
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---
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tests/qemu-iotests/195 | 92 ++++++++++++++++++++++++++++++++++++++++++++++
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tests/qemu-iotests/195.out | 78 +++++++++++++++++++++++++++++++++++++++
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tests/qemu-iotests/group | 1 +
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3 files changed, 171 insertions(+)
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create mode 100644 tests/qemu-iotests/195
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create mode 100644 tests/qemu-iotests/195.out
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diff --git a/tests/qemu-iotests/195 b/tests/qemu-iotests/195
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new file mode 100644
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index 0000000..05a239c
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--- /dev/null
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+++ b/tests/qemu-iotests/195
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@@ -0,0 +1,92 @@
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+#!/bin/bash
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+#
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+# Test change-backing-file command
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+#
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+# Copyright (C) 2017 Red Hat, Inc.
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+#
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+# This program is free software; you can redistribute it and/or modify
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+# it under the terms of the GNU General Public License as published by
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+# the Free Software Foundation; either version 2 of the License, or
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+# (at your option) any later version.
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+#
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+# This program is distributed in the hope that it will be useful,
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+# but WITHOUT ANY WARRANTY; without even the implied warranty of
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+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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+# GNU General Public License for more details.
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+#
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+# You should have received a copy of the GNU General Public License
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+# along with this program. If not, see <http://www.gnu.org/licenses/>.
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+#
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+
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+# creator
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+owner=kwolf@redhat.com
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+
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+seq=`basename $0`
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+echo "QA output created by $seq"
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+
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+here=`pwd`
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+status=1 # failure is the default!
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+
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+_cleanup()
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+{
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+ _cleanup_test_img
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+ rm -f "$TEST_IMG.mid"
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+}
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+trap "_cleanup; exit \$status" 0 1 2 3 15
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+
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+# get standard environment, filters and checks
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+. ./common.rc
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+. ./common.filter
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+
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+_supported_fmt qcow2
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+_supported_proto file
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+_supported_os Linux
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+
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+function do_run_qemu()
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+{
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+ echo Testing: "$@" | _filter_imgfmt
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+ $QEMU -nographic -qmp-pretty stdio -serial none "$@"
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+ echo
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+}
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+
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+function run_qemu()
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+{
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+ do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_qemu | _filter_qmp \
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+ | _filter_qemu_io | _filter_generated_node_ids
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+}
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+
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+size=64M
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+TEST_IMG="$TEST_IMG.base" _make_test_img $size
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+TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
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+_make_test_img -b "$TEST_IMG.mid"
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+
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+echo
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+echo "Change backing file of mid (opened read-only)"
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+echo
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+
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+run_qemu -drive if=none,file="$TEST_IMG",backing.node-name=mid <
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+{"execute":"qmp_capabilities"}
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+{"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"mid","backing-file":"/dev/null"}}
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+{"execute":"quit"}
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+EOF
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+
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+TEST_IMG="$TEST_IMG.mid" _img_info
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+
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+echo
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+echo "Change backing file of top (opened writable)"
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+echo
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+
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+TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base"
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+
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+run_qemu -drive if=none,file="$TEST_IMG",node-name=top <
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+{"execute":"qmp_capabilities"}
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+{"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"top","backing-file":"/dev/null"}}
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+{"execute":"quit"}
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+EOF
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+
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+_img_info
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+
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+# success, all done
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+echo "*** done"
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+rm -f $seq.full
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+status=0
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diff --git a/tests/qemu-iotests/195.out b/tests/qemu-iotests/195.out
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new file mode 100644
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index 0000000..7613575
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--- /dev/null
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+++ b/tests/qemu-iotests/195.out
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@@ -0,0 +1,78 @@
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+QA output created by 195
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+Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=67108864
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+Formatting 'TEST_DIR/t.IMGFMT.mid', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base
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+Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.mid
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+
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+Change backing file of mid (opened read-only)
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+
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+Testing: -drive if=none,file=TEST_DIR/t.IMGFMT,backing.node-name=mid
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+{
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+ QMP_VERSION
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+}
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+{
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+ "return": {
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+ }
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+}
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+{
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+ "return": {
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+ }
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+}
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+{
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+ "return": {
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+ }
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+}
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+{
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+ "timestamp": {
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+ "seconds": TIMESTAMP,
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+ "microseconds": TIMESTAMP
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+ },
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+ "event": "SHUTDOWN",
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+ "data": {
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+ "guest": false
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+ }
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+}
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+
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+image: TEST_DIR/t.IMGFMT.mid
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+file format: IMGFMT
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+virtual size: 64M (67108864 bytes)
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+cluster_size: 65536
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+backing file: /dev/null
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+backing file format: IMGFMT
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+
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+Change backing file of top (opened writable)
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+
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+Formatting 'TEST_DIR/t.IMGFMT.mid', fmt=IMGFMT size=67108864 backing_file=TEST_DIR/t.IMGFMT.base
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+Testing: -drive if=none,file=TEST_DIR/t.IMGFMT,node-name=top
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+{
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+ QMP_VERSION
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+}
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+{
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+ "return": {
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+ }
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+}
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+{
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+ "return": {
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+ }
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+}
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+{
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+ "return": {
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+ }
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+}
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+{
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+ "timestamp": {
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+ "seconds": TIMESTAMP,
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+ "microseconds": TIMESTAMP
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+ },
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+ "event": "SHUTDOWN",
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+ "data": {
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+ "guest": false
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+ }
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+}
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+
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+image: TEST_DIR/t.IMGFMT
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+file format: IMGFMT
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+virtual size: 64M (67108864 bytes)
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+cluster_size: 65536
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+backing file: /dev/null
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+backing file format: IMGFMT
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+*** done
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diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
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index 13760b3..491a5f5 100644
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--- a/tests/qemu-iotests/group
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+++ b/tests/qemu-iotests/group
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@@ -188,4 +188,5 @@
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190 rw auto quick
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192 rw auto quick
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194 rw auto migration quick
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+195 rw auto quick
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198 rw auto
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--
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1.8.3.1
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