xref: /openbmc/qemu/tests/qemu-iotests/156 (revision 35658f6e) 
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    rm -f "$TEST_IMG{,.target}{,.backing,.overlay}"
41}
42trap "_cleanup; exit \$status" 0 1 2 3 15
43
44# get standard environment, filters and checks
45. ./common.rc
46. ./common.filter
47. ./common.qemu
48
49_supported_fmt qcow2 qed
50_supported_proto generic
51_supported_os Linux
52
53# Create source disk
54TEST_IMG="$TEST_IMG.backing" _make_test_img 1M
55_make_test_img -b "$TEST_IMG.backing" 1M
56
57$QEMU_IO -c 'write -P 1 0 256k' "$TEST_IMG.backing" | _filter_qemu_io
58$QEMU_IO -c 'write -P 2 64k 192k' "$TEST_IMG" | _filter_qemu_io
59
60_launch_qemu -drive if=none,id=source,file="$TEST_IMG"
61
62_send_qemu_cmd $QEMU_HANDLE \
63    "{ 'execute': 'qmp_capabilities' }" \
64    'return'
65
66# Create snapshot
67TEST_IMG="$TEST_IMG.overlay" _make_test_img -b "$TEST_IMG" 1M
68_send_qemu_cmd $QEMU_HANDLE \
69    "{ 'execute': 'blockdev-snapshot-sync',
70       'arguments': { 'device': 'source',
71                      'snapshot-file': '$TEST_IMG.overlay',
72                      'format': '$IMGFMT',
73                      'mode': 'existing' } }" \
74    'return'
75
76# Write something to the snapshot
77_send_qemu_cmd $QEMU_HANDLE \
78    "{ 'execute': 'human-monitor-command',
79       'arguments': { 'command-line':
80                      'qemu-io source \"write -P 3 128k 128k\"' } }" \
81    'return'
82
83# Create target image
84TEST_IMG="$TEST_IMG.target.overlay" _make_test_img -b "$TEST_IMG.target" 1M
85
86# Mirror snapshot
87_send_qemu_cmd $QEMU_HANDLE \
88    "{ 'execute': 'drive-mirror',
89       'arguments': { 'device': 'source',
90                      'target': '$TEST_IMG.target.overlay',
91                      'mode': 'existing',
92                      'sync': 'top' } }" \
93    'return'
94
95# Wait for convergence
96_send_qemu_cmd $QEMU_HANDLE \
97    '' \
98    'BLOCK_JOB_READY'
99
100# Write some more
101_send_qemu_cmd $QEMU_HANDLE \
102    "{ 'execute': 'human-monitor-command',
103       'arguments': { 'command-line':
104                      'qemu-io source \"write -P 4 192k 64k\"' } }" \
105    'return'
106
107# Copy source backing chain to the target before completing the job
108cp "$TEST_IMG.backing" "$TEST_IMG.target.backing"
109cp "$TEST_IMG" "$TEST_IMG.target"
110$QEMU_IMG rebase -u -b "$TEST_IMG.target.backing" "$TEST_IMG.target"
111
112# Complete block job
113_send_qemu_cmd $QEMU_HANDLE \
114    "{ 'execute': 'block-job-complete',
115       'arguments': { 'device': 'source' } }" \
116    ''
117
118_send_qemu_cmd $QEMU_HANDLE \
119    '' \
120    'BLOCK_JOB_COMPLETED'
121
122# Remove the source images
123rm -f "$TEST_IMG{,.backing,.overlay}"
124
125echo
126
127# Check online disk contents
128_send_qemu_cmd $QEMU_HANDLE \
129    "{ 'execute': 'human-monitor-command',
130       'arguments': { 'command-line':
131                      'qemu-io source \"read -P 1 0k 64k\"' } }" \
132    'return'
133
134_send_qemu_cmd $QEMU_HANDLE \
135    "{ 'execute': 'human-monitor-command',
136       'arguments': { 'command-line':
137                      'qemu-io source \"read -P 2 64k 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 3 128k 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 4 192k 64k\"' } }" \
150    'return'
151
152echo
153
154_send_qemu_cmd $QEMU_HANDLE \
155    "{ 'execute': 'quit' }" \
156    'return'
157
158wait=1 _cleanup_qemu
159
160echo
161
162# Check offline disk contents
163$QEMU_IO -c 'read -P 1 0k 64k' \
164         -c 'read -P 2 64k 64k' \
165         -c 'read -P 3 128k 64k' \
166         -c 'read -P 4 192k 64k' \
167         "$TEST_IMG.target.overlay" | _filter_qemu_io
168
169echo
170
171# success, all done
172echo '*** done'
173rm -f $seq.full
174status=0
175