xref: /qemu/tests/qemu-iotests/156 (revision 727385c4) 
1#!/usr/bin/env bash
2# group: rw auto quick
3#
4# Tests oVirt-like storage migration:
5#  - Create snapshot
6#  - Create target image with (not yet existing) target backing chain
7#    (i.e. just write the name of a soon-to-be-copied-over backing file into it)
8#  - drive-mirror the snapshot to the target with mode=existing and sync=top
9#  - In the meantime, copy the original source files to the destination via
10#    conventional means (i.e. outside of qemu)
11#  - Complete the drive-mirror job
12#  - Delete all source images
13#
14# Copyright (C) 2016 Red Hat, Inc.
15#
16# This program is free software; you can redistribute it and/or modify
17# it under the terms of the GNU General Public License as published by
18# the Free Software Foundation; either version 2 of the License, or
19# (at your option) any later version.
20#
21# This program is distributed in the hope that it will be useful,
22# but WITHOUT ANY WARRANTY; without even the implied warranty of
23# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
24# GNU General Public License for more details.
25#
26# You should have received a copy of the GNU General Public License
27# along with this program.  If not, see <http://www.gnu.org/licenses/>.
28#
29
30# creator
31owner=mreitz@redhat.com
32
33seq="$(basename $0)"
34echo "QA output created by $seq"
35
36status=1	# failure is the default!
37
38_cleanup()
39{
40    _cleanup_qemu
41    for img in "$TEST_IMG"{,.target}{,.backing,.overlay}; do
42        _rm_test_img "$img"
43    done
44}
45trap "_cleanup; exit \$status" 0 1 2 3 15
46
47# get standard environment, filters and checks
48. ./common.rc
49. ./common.filter
50. ./common.qemu
51
52_supported_fmt qcow2 qed
53_supported_proto generic
54# Copying files around with cp does not work with external data files
55_unsupported_imgopts data_file
56
57# Create source disk
58TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
59_make_test_img -b "$TEST_IMG.backing" -F $IMGFMT 1M
60
61$QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
62$QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
63
64_launch_qemu -drive if=none,id=source,file="$TEST_IMG"
65
66_send_qemu_cmd $QEMU_HANDLE \
67    "{ 'execute': 'qmp_capabilities' }" \
68    'return'
69
70# Create snapshot
71TEST_IMG="$TEST_IMG.overlay" _make_test_img -u -b "$TEST_IMG" -F $IMGFMT 1M
72_send_qemu_cmd $QEMU_HANDLE \
73    "{ 'execute': 'blockdev-snapshot-sync',
74       'arguments': { 'device': 'source',
75                      'snapshot-file': '$TEST_IMG.overlay',
76                      'format': '$IMGFMT',
77                      'mode': 'existing' } }" \
78    'return'
79
80# Write something to the snapshot
81_send_qemu_cmd $QEMU_HANDLE \
82    "{ 'execute': 'human-monitor-command',
83       'arguments': { 'command-line':
84                      'qemu-io source \"write -P 3 128k 128k\"' } }" \
85    'return'
86
87# Create target image
88TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -u -b "$TEST_IMG.target" \
89    -F $IMGFMT 1M
90
91# Mirror snapshot
92_send_qemu_cmd $QEMU_HANDLE \
93    "{ 'execute': 'drive-mirror',
94       'arguments': { 'device': 'source',
95                      'target': '$TEST_IMG.target.overlay',
96                      'mode': 'existing',
97                      'sync': 'top' } }" \
98    'return'
99
100# Wait for convergence
101_send_qemu_cmd $QEMU_HANDLE \
102    '' \
103    'BLOCK_JOB_READY'
104
105# Write some more
106_send_qemu_cmd $QEMU_HANDLE \
107    "{ 'execute': 'human-monitor-command',
108       'arguments': { 'command-line':
109                      'qemu-io source \"write -P 4 192k 64k\"' } }" \
110    'return'
111
112# Copy source backing chain to the target before completing the job
113cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
114cp "$TEST_IMG" "$TEST_IMG.target"
115$QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" -F $IMGFMT "$TEST_IMG.target"
116
117# Complete block job
118_send_qemu_cmd $QEMU_HANDLE \
119    "{ 'execute': 'block-job-complete',
120       'arguments': { 'device': 'source' } }" \
121    ''
122
123_send_qemu_cmd $QEMU_HANDLE \
124    '' \
125    '"status": "null"'
126
127# Remove the source images
128for img in "$TEST_IMG{,.backing,.overlay}"; do
129    _rm_test_img "$img"
130done
131
132echo
133
134# Check online disk contents
135_send_qemu_cmd $QEMU_HANDLE \
136    "{ 'execute': 'human-monitor-command',
137       'arguments': { 'command-line':
138                      'qemu-io source \"read -P 1 0k 64k\"' } }" \
139    'return'
140
141_send_qemu_cmd $QEMU_HANDLE \
142    "{ 'execute': 'human-monitor-command',
143       'arguments': { 'command-line':
144                      'qemu-io source \"read -P 2 64k 64k\"' } }" \
145    'return'
146
147_send_qemu_cmd $QEMU_HANDLE \
148    "{ 'execute': 'human-monitor-command',
149       'arguments': { 'command-line':
150                      'qemu-io source \"read -P 3 128k 64k\"' } }" \
151    'return'
152
153_send_qemu_cmd $QEMU_HANDLE \
154    "{ 'execute': 'human-monitor-command',
155       'arguments': { 'command-line':
156                      'qemu-io source \"read -P 4 192k 64k\"' } }" \
157    'return'
158
159echo
160
161_send_qemu_cmd $QEMU_HANDLE \
162    "{ 'execute': 'quit' }" \
163    'return'
164
165wait=1 _cleanup_qemu
166
167echo
168
169# Check offline disk contents
170$QEMU_IO -c 'read -P 1 0k 64k' \
171         -c 'read -P 2 64k 64k' \
172         -c 'read -P 3 128k 64k' \
173         -c 'read -P 4 192k 64k' \
174         "$TEST_IMG.target.overlay" | _filter_qemu_io
175
176echo
177
178# success, all done
179echo '*** done'
180rm -f $seq.full
181status=0
182