xref: /openbmc/qemu/tests/qemu-iotests/156 (revision a9ded601) 
1#!/bin/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 $seq"
34
35here="$PWD"
36status=1	# failure is the default!
37
38_cleanup()
39{
40    _cleanup_qemu
41    rm -f "$TEST_IMG{,.target}{,.backing,.overlay}"
42}
43trap "_cleanup; exit \$status" 0 1 2 3 15
44
45# get standard environment, filters and checks
46. ./common.rc
47. ./common.filter
48. ./common.qemu
49
50_supported_fmt qcow2 qed
51_supported_proto generic
52_unsupported_proto vxhs
53_supported_os Linux
54
55# Create source disk
56TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
57_make_test_img -b "$TEST_IMG.backing" 1M
58
59$QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
60$QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
61
62_launch_qemu -drive if=none,id=source,file="$TEST_IMG"
63
64_send_qemu_cmd $QEMU_HANDLE \
65    "{ 'execute': 'qmp_capabilities' }" \
66    'return'
67
68# Create snapshot
69TEST_IMG="$TEST_IMG.overlay" _make_test_img -b "$TEST_IMG" 1M
70_send_qemu_cmd $QEMU_HANDLE \
71    "{ 'execute': 'blockdev-snapshot-sync',
72       'arguments': { 'device': 'source',
73                      'snapshot-file': '$TEST_IMG.overlay',
74                      'format': '$IMGFMT',
75                      'mode': 'existing' } }" \
76    'return'
77
78# Write something to the snapshot
79_send_qemu_cmd $QEMU_HANDLE \
80    "{ 'execute': 'human-monitor-command',
81       'arguments': { 'command-line':
82                      'qemu-io source \"write -P 3 128k 128k\"' } }" \
83    'return'
84
85# Create target image
86TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -b "$TEST_IMG.target" 1M
87
88# Mirror snapshot
89_send_qemu_cmd $QEMU_HANDLE \
90    "{ 'execute': 'drive-mirror',
91       'arguments': { 'device': 'source',
92                      'target': '$TEST_IMG.target.overlay',
93                      'mode': 'existing',
94                      'sync': 'top' } }" \
95    'return'
96
97# Wait for convergence
98_send_qemu_cmd $QEMU_HANDLE \
99    '' \
100    'BLOCK_JOB_READY'
101
102# Write some more
103_send_qemu_cmd $QEMU_HANDLE \
104    "{ 'execute': 'human-monitor-command',
105       'arguments': { 'command-line':
106                      'qemu-io source \"write -P 4 192k 64k\"' } }" \
107    'return'
108
109# Copy source backing chain to the target before completing the job
110cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
111cp "$TEST_IMG" "$TEST_IMG.target"
112$QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" "$TEST_IMG.target"
113
114# Complete block job
115_send_qemu_cmd $QEMU_HANDLE \
116    "{ 'execute': 'block-job-complete',
117       'arguments': { 'device': 'source' } }" \
118    ''
119
120_send_qemu_cmd $QEMU_HANDLE \
121    '' \
122    'BLOCK_JOB_COMPLETED'
123
124# Remove the source images
125rm -f "$TEST_IMG{,.backing,.overlay}"
126
127echo
128
129# Check online disk contents
130_send_qemu_cmd $QEMU_HANDLE \
131    "{ 'execute': 'human-monitor-command',
132       'arguments': { 'command-line':
133                      'qemu-io source \"read -P 1 0k 64k\"' } }" \
134    'return'
135
136_send_qemu_cmd $QEMU_HANDLE \
137    "{ 'execute': 'human-monitor-command',
138       'arguments': { 'command-line':
139                      'qemu-io source \"read -P 2 64k 64k\"' } }" \
140    'return'
141
142_send_qemu_cmd $QEMU_HANDLE \
143    "{ 'execute': 'human-monitor-command',
144       'arguments': { 'command-line':
145                      'qemu-io source \"read -P 3 128k 64k\"' } }" \
146    'return'
147
148_send_qemu_cmd $QEMU_HANDLE \
149    "{ 'execute': 'human-monitor-command',
150       'arguments': { 'command-line':
151                      'qemu-io source \"read -P 4 192k 64k\"' } }" \
152    'return'
153
154echo
155
156_send_qemu_cmd $QEMU_HANDLE \
157    "{ 'execute': 'quit' }" \
158    'return'
159
160wait=1 _cleanup_qemu
161
162echo
163
164# Check offline disk contents
165$QEMU_IO -c 'read -P 1 0k 64k' \
166         -c 'read -P 2 64k 64k' \
167         -c 'read -P 3 128k 64k' \
168         -c 'read -P 4 192k 64k' \
169         "$TEST_IMG.target.overlay" | _filter_qemu_io
170
171echo
172
173# success, all done
174echo '*** done'
175rm -f $seq.full
176status=0
177