xref: /openbmc/qemu/tests/qemu-iotests/156 (revision 7f6c3d1a) 
1#!/usr/bin/env bash
2#
3# Tests oVirt-like storage migration:
4#  - Create snapshot
5#  - Create target image with (not yet existing) target backing chain
6#    (i.e. just write the name of a soon-to-be-copied-over backing file into it)
7#  - drive-mirror the snapshot to the target with mode=existing and sync=top
8#  - In the meantime, copy the original source files to the destination via
9#    conventional means (i.e. outside of qemu)
10#  - Complete the drive-mirror job
11#  - Delete all source images
12#
13# Copyright (C) 2016 Red Hat, Inc.
14#
15# This program is free software; you can redistribute it and/or modify
16# it under the terms of the GNU General Public License as published by
17# the Free Software Foundation; either version 2 of the License, or
18# (at your option) any later version.
19#
20# This program is distributed in the hope that it will be useful,
21# but WITHOUT ANY WARRANTY; without even the implied warranty of
22# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
23# GNU General Public License for more details.
24#
25# You should have received a copy of the GNU General Public License
26# along with this program.  If not, see <http://www.gnu.org/licenses/>.
27#
28
29# creator
30owner=mreitz@redhat.com
31
32seq="$(basename $0)"
33echo "QA output created by $seq"
34
35status=1	# failure is the default!
36
37_cleanup()
38{
39    _cleanup_qemu
40    for img in "$TEST_IMG"{,.target}{,.backing,.overlay}; do
41        _rm_test_img "$img"
42    done
43}
44trap "_cleanup; exit \$status" 0 1 2 3 15
45
46# get standard environment, filters and checks
47. ./common.rc
48. ./common.filter
49. ./common.qemu
50
51_supported_fmt qcow2 qed
52_supported_proto generic
53# Copying files around with cp does not work with external data files
54_unsupported_imgopts data_file
55
56# Create source disk
57TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
58_make_test_img -b "$TEST_IMG.backing" -F $IMGFMT 1M
59
60$QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
61$QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
62
63_launch_qemu -drive if=none,id=source,file="$TEST_IMG"
64
65_send_qemu_cmd $QEMU_HANDLE \
66    "{ 'execute': 'qmp_capabilities' }" \
67    'return'
68
69# Create snapshot
70TEST_IMG="$TEST_IMG.overlay" _make_test_img -u -b "$TEST_IMG" -F $IMGFMT 1M
71_send_qemu_cmd $QEMU_HANDLE \
72    "{ 'execute': 'blockdev-snapshot-sync',
73       'arguments': { 'device': 'source',
74                      'snapshot-file': '$TEST_IMG.overlay',
75                      'format': '$IMGFMT',
76                      'mode': 'existing' } }" \
77    'return'
78
79# Write something to the snapshot
80_send_qemu_cmd $QEMU_HANDLE \
81    "{ 'execute': 'human-monitor-command',
82       'arguments': { 'command-line':
83                      'qemu-io source \"write -P 3 128k 128k\"' } }" \
84    'return'
85
86# Create target image
87TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -u -b "$TEST_IMG.target" \
88    -F $IMGFMT 1M
89
90# Mirror snapshot
91_send_qemu_cmd $QEMU_HANDLE \
92    "{ 'execute': 'drive-mirror',
93       'arguments': { 'device': 'source',
94                      'target': '$TEST_IMG.target.overlay',
95                      'mode': 'existing',
96                      'sync': 'top' } }" \
97    'return'
98
99# Wait for convergence
100_send_qemu_cmd $QEMU_HANDLE \
101    '' \
102    'BLOCK_JOB_READY'
103
104# Write some more
105_send_qemu_cmd $QEMU_HANDLE \
106    "{ 'execute': 'human-monitor-command',
107       'arguments': { 'command-line':
108                      'qemu-io source \"write -P 4 192k 64k\"' } }" \
109    'return'
110
111# Copy source backing chain to the target before completing the job
112cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
113cp "$TEST_IMG" "$TEST_IMG.target"
114$QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" -F $IMGFMT "$TEST_IMG.target"
115
116# Complete block job
117_send_qemu_cmd $QEMU_HANDLE \
118    "{ 'execute': 'block-job-complete',
119       'arguments': { 'device': 'source' } }" \
120    ''
121
122_send_qemu_cmd $QEMU_HANDLE \
123    '' \
124    '"status": "null"'
125
126# Remove the source images
127for img in "$TEST_IMG{,.backing,.overlay}"; do
128    _rm_test_img "$img"
129done
130
131echo
132
133# Check online disk contents
134_send_qemu_cmd $QEMU_HANDLE \
135    "{ 'execute': 'human-monitor-command',
136       'arguments': { 'command-line':
137                      'qemu-io source \"read -P 1 0k 64k\"' } }" \
138    'return'
139
140_send_qemu_cmd $QEMU_HANDLE \
141    "{ 'execute': 'human-monitor-command',
142       'arguments': { 'command-line':
143                      'qemu-io source \"read -P 2 64k 64k\"' } }" \
144    'return'
145
146_send_qemu_cmd $QEMU_HANDLE \
147    "{ 'execute': 'human-monitor-command',
148       'arguments': { 'command-line':
149                      'qemu-io source \"read -P 3 128k 64k\"' } }" \
150    'return'
151
152_send_qemu_cmd $QEMU_HANDLE \
153    "{ 'execute': 'human-monitor-command',
154       'arguments': { 'command-line':
155                      'qemu-io source \"read -P 4 192k 64k\"' } }" \
156    'return'
157
158echo
159
160_send_qemu_cmd $QEMU_HANDLE \
161    "{ 'execute': 'quit' }" \
162    'return'
163
164wait=1 _cleanup_qemu
165
166echo
167
168# Check offline disk contents
169$QEMU_IO -c 'read -P 1 0k 64k' \
170         -c 'read -P 2 64k 64k' \
171         -c 'read -P 3 128k 64k' \
172         -c 'read -P 4 192k 64k' \
173         "$TEST_IMG.target.overlay" | _filter_qemu_io
174
175echo
176
177# success, all done
178echo '*** done'
179rm -f $seq.full
180status=0
181