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747051cd JC |
1 | #!/usr/bin/env python |
2 | # | |
3 | # Tests for image block commit. | |
4 | # | |
5 | # Copyright (C) 2012 IBM, Corp. | |
6 | # Copyright (C) 2012 Red Hat, Inc. | |
7 | # | |
8 | # This program is free software; you can redistribute it and/or modify | |
9 | # it under the terms of the GNU General Public License as published by | |
10 | # the Free Software Foundation; either version 2 of the License, or | |
11 | # (at your option) any later version. | |
12 | # | |
13 | # This program is distributed in the hope that it will be useful, | |
14 | # but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | # GNU General Public License for more details. | |
17 | # | |
18 | # You should have received a copy of the GNU General Public License | |
19 | # along with this program. If not, see <http://www.gnu.org/licenses/>. | |
20 | # | |
21 | # Test for live block commit | |
22 | # Derived from Image Streaming Test 030 | |
23 | ||
24 | import time | |
25 | import os | |
26 | import iotests | |
27 | from iotests import qemu_img, qemu_io | |
28 | import struct | |
6bf0d1f4 | 29 | import errno |
747051cd JC |
30 | |
31 | backing_img = os.path.join(iotests.test_dir, 'backing.img') | |
32 | mid_img = os.path.join(iotests.test_dir, 'mid.img') | |
33 | test_img = os.path.join(iotests.test_dir, 'test.img') | |
34 | ||
35 | class ImageCommitTestCase(iotests.QMPTestCase): | |
36 | '''Abstract base class for image commit test cases''' | |
37 | ||
7676e2c5 | 38 | def wait_for_complete(self, need_ready=False): |
4de43470 | 39 | completed = False |
8b9a30ca | 40 | ready = False |
4de43470 FZ |
41 | while not completed: |
42 | for event in self.vm.get_qmp_events(wait=True): | |
43 | if event['event'] == 'BLOCK_JOB_COMPLETED': | |
bcdce5a7 | 44 | self.assert_qmp_absent(event, 'data/error') |
4de43470 FZ |
45 | self.assert_qmp(event, 'data/type', 'commit') |
46 | self.assert_qmp(event, 'data/device', 'drive0') | |
1d3ba15a | 47 | self.assert_qmp(event, 'data/offset', event['data']['len']) |
8b9a30ca FZ |
48 | if need_ready: |
49 | self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event") | |
4de43470 FZ |
50 | completed = True |
51 | elif event['event'] == 'BLOCK_JOB_READY': | |
8b9a30ca | 52 | ready = True |
4de43470 FZ |
53 | self.assert_qmp(event, 'data/type', 'commit') |
54 | self.assert_qmp(event, 'data/device', 'drive0') | |
4de43470 FZ |
55 | self.vm.qmp('block-job-complete', device='drive0') |
56 | ||
fb0a078f | 57 | self.assert_no_active_block_jobs() |
4de43470 FZ |
58 | self.vm.shutdown() |
59 | ||
d57177a4 | 60 | def run_commit_test(self, top, base, need_ready=False, node_names=False): |
7676e2c5 | 61 | self.assert_no_active_block_jobs() |
d57177a4 KW |
62 | if node_names: |
63 | result = self.vm.qmp('block-commit', device='drive0', top_node=top, base_node=base) | |
64 | else: | |
65 | result = self.vm.qmp('block-commit', device='drive0', top=top, base=base) | |
7676e2c5 JC |
66 | self.assert_qmp(result, 'return', {}) |
67 | self.wait_for_complete(need_ready) | |
68 | ||
69 | def run_default_commit_test(self): | |
70 | self.assert_no_active_block_jobs() | |
71 | result = self.vm.qmp('block-commit', device='drive0') | |
72 | self.assert_qmp(result, 'return', {}) | |
73 | self.wait_for_complete() | |
74 | ||
747051cd | 75 | class TestSingleDrive(ImageCommitTestCase): |
c3971b88 KW |
76 | # Need some space after the copied data so that throttling is effective in |
77 | # tests that use it rather than just completing the job immediately | |
78 | image_len = 2 * 1024 * 1024 | |
747051cd JC |
79 | test_len = 1 * 1024 * 256 |
80 | ||
81 | def setUp(self): | |
8b9a30ca | 82 | iotests.create_image(backing_img, self.image_len) |
747051cd JC |
83 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img) |
84 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img) | |
90c9b167 KW |
85 | qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img) |
86 | qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) | |
d3c8c674 | 87 | self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=mid,backing.backing.node-name=base", interface="none") |
f1d5516a CH |
88 | if iotests.qemu_default_machine == 's390-ccw-virtio': |
89 | self.vm.add_device("virtio-scsi-ccw") | |
90 | else: | |
91 | self.vm.add_device("virtio-scsi-pci") | |
92 | ||
c3971b88 | 93 | self.vm.add_device("scsi-hd,id=scsi0,drive=drive0") |
747051cd JC |
94 | self.vm.launch() |
95 | ||
96 | def tearDown(self): | |
97 | self.vm.shutdown() | |
98 | os.remove(test_img) | |
99 | os.remove(mid_img) | |
100 | os.remove(backing_img) | |
101 | ||
102 | def test_commit(self): | |
4de43470 | 103 | self.run_commit_test(mid_img, backing_img) |
90c9b167 KW |
104 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) |
105 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) | |
747051cd | 106 | |
d57177a4 KW |
107 | def test_commit_node(self): |
108 | self.run_commit_test("mid", "base", node_names=True) | |
109 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) | |
110 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) | |
111 | ||
747051cd JC |
112 | def test_device_not_found(self): |
113 | result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img) | |
114 | self.assert_qmp(result, 'error/class', 'DeviceNotFound') | |
115 | ||
116 | def test_top_same_base(self): | |
fb0a078f | 117 | self.assert_no_active_block_jobs() |
747051cd JC |
118 | result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img) |
119 | self.assert_qmp(result, 'error/class', 'GenericError') | |
d5208c45 | 120 | self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img) |
747051cd JC |
121 | |
122 | def test_top_invalid(self): | |
fb0a078f | 123 | self.assert_no_active_block_jobs() |
747051cd JC |
124 | result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img) |
125 | self.assert_qmp(result, 'error/class', 'GenericError') | |
126 | self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') | |
127 | ||
128 | def test_base_invalid(self): | |
fb0a078f | 129 | self.assert_no_active_block_jobs() |
747051cd JC |
130 | result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile') |
131 | self.assert_qmp(result, 'error/class', 'GenericError') | |
132 | self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found') | |
133 | ||
d57177a4 KW |
134 | def test_top_node_invalid(self): |
135 | self.assert_no_active_block_jobs() | |
136 | result = self.vm.qmp('block-commit', device='drive0', top_node='badfile', base_node='base') | |
137 | self.assert_qmp(result, 'error/class', 'GenericError') | |
138 | self.assert_qmp(result, 'error/desc', "Cannot find device= nor node_name=badfile") | |
139 | ||
140 | def test_base_node_invalid(self): | |
141 | self.assert_no_active_block_jobs() | |
142 | result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='badfile') | |
143 | self.assert_qmp(result, 'error/class', 'GenericError') | |
144 | self.assert_qmp(result, 'error/desc', "Cannot find device= nor node_name=badfile") | |
145 | ||
146 | def test_top_path_and_node(self): | |
147 | self.assert_no_active_block_jobs() | |
148 | result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', top='%s' % mid_img) | |
149 | self.assert_qmp(result, 'error/class', 'GenericError') | |
150 | self.assert_qmp(result, 'error/desc', "'top-node' and 'top' are mutually exclusive") | |
151 | ||
152 | def test_base_path_and_node(self): | |
153 | self.assert_no_active_block_jobs() | |
154 | result = self.vm.qmp('block-commit', device='drive0', top_node='mid', base_node='base', base='%s' % backing_img) | |
155 | self.assert_qmp(result, 'error/class', 'GenericError') | |
156 | self.assert_qmp(result, 'error/desc', "'base-node' and 'base' are mutually exclusive") | |
157 | ||
747051cd | 158 | def test_top_is_active(self): |
8b9a30ca | 159 | self.run_commit_test(test_img, backing_img, need_ready=True) |
90c9b167 KW |
160 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) |
161 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) | |
747051cd | 162 | |
7676e2c5 JC |
163 | def test_top_is_default_active(self): |
164 | self.run_default_commit_test() | |
90c9b167 KW |
165 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed")) |
166 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed")) | |
7676e2c5 | 167 | |
747051cd | 168 | def test_top_and_base_reversed(self): |
fb0a078f | 169 | self.assert_no_active_block_jobs() |
747051cd JC |
170 | result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img) |
171 | self.assert_qmp(result, 'error/class', 'GenericError') | |
d5208c45 | 172 | self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img) |
747051cd | 173 | |
d57177a4 KW |
174 | def test_top_and_base_node_reversed(self): |
175 | self.assert_no_active_block_jobs() | |
176 | result = self.vm.qmp('block-commit', device='drive0', top_node='base', base_node='top') | |
177 | self.assert_qmp(result, 'error/class', 'GenericError') | |
178 | self.assert_qmp(result, 'error/desc', "'top' is not in this backing file chain") | |
179 | ||
180 | def test_top_node_in_wrong_chain(self): | |
181 | self.assert_no_active_block_jobs() | |
182 | ||
183 | result = self.vm.qmp('blockdev-add', driver='null-co', node_name='null') | |
184 | self.assert_qmp(result, 'return', {}) | |
185 | ||
186 | result = self.vm.qmp('block-commit', device='drive0', top_node='null', base_node='base') | |
187 | self.assert_qmp(result, 'error/class', 'GenericError') | |
188 | self.assert_qmp(result, 'error/desc', "'null' is not in this backing file chain") | |
189 | ||
c3971b88 KW |
190 | # When the job is running on a BB that is automatically deleted on hot |
191 | # unplug, the job is cancelled when the device disappears | |
192 | def test_hot_unplug(self): | |
193 | if self.image_len == 0: | |
194 | return | |
195 | ||
196 | self.assert_no_active_block_jobs() | |
197 | result = self.vm.qmp('block-commit', device='drive0', top=mid_img, | |
9a3a9a63 | 198 | base=backing_img, speed=(self.image_len // 4)) |
c3971b88 KW |
199 | self.assert_qmp(result, 'return', {}) |
200 | result = self.vm.qmp('device_del', id='scsi0') | |
201 | self.assert_qmp(result, 'return', {}) | |
202 | ||
203 | cancelled = False | |
204 | deleted = False | |
205 | while not cancelled or not deleted: | |
206 | for event in self.vm.get_qmp_events(wait=True): | |
207 | if event['event'] == 'DEVICE_DELETED': | |
208 | self.assert_qmp(event, 'data/device', 'scsi0') | |
209 | deleted = True | |
210 | elif event['event'] == 'BLOCK_JOB_CANCELLED': | |
211 | self.assert_qmp(event, 'data/device', 'drive0') | |
212 | cancelled = True | |
1dac83f1 KW |
213 | elif event['event'] == 'JOB_STATUS_CHANGE': |
214 | self.assert_qmp(event, 'data/id', 'drive0') | |
c3971b88 KW |
215 | else: |
216 | self.fail("Unexpected event %s" % (event['event'])) | |
217 | ||
218 | self.assert_no_active_block_jobs() | |
747051cd | 219 | |
d3c8c674 KW |
220 | # Tests that the insertion of the commit_top filter node doesn't make a |
221 | # difference to query-blockstat | |
222 | def test_implicit_node(self): | |
223 | if self.image_len == 0: | |
224 | return | |
225 | ||
226 | self.assert_no_active_block_jobs() | |
227 | result = self.vm.qmp('block-commit', device='drive0', top=mid_img, | |
9a3a9a63 | 228 | base=backing_img, speed=(self.image_len // 4)) |
d3c8c674 KW |
229 | self.assert_qmp(result, 'return', {}) |
230 | ||
231 | result = self.vm.qmp('query-block') | |
232 | self.assert_qmp(result, 'return[0]/inserted/file', test_img) | |
233 | self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt) | |
234 | self.assert_qmp(result, 'return[0]/inserted/backing_file', mid_img) | |
235 | self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 2) | |
236 | self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img) | |
237 | self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', mid_img) | |
238 | self.assert_qmp(result, 'return[0]/inserted/image/backing-image/backing-image/filename', backing_img) | |
239 | ||
240 | result = self.vm.qmp('query-blockstats') | |
241 | self.assert_qmp(result, 'return[0]/node-name', 'top') | |
242 | self.assert_qmp(result, 'return[0]/backing/node-name', 'mid') | |
243 | self.assert_qmp(result, 'return[0]/backing/backing/node-name', 'base') | |
244 | ||
245 | self.cancel_and_wait() | |
246 | self.assert_no_active_block_jobs() | |
247 | ||
6bf0d1f4 JC |
248 | class TestRelativePaths(ImageCommitTestCase): |
249 | image_len = 1 * 1024 * 1024 | |
250 | test_len = 1 * 1024 * 256 | |
251 | ||
252 | dir1 = "dir1" | |
253 | dir2 = "dir2/" | |
254 | dir3 = "dir2/dir3/" | |
255 | ||
256 | test_img = os.path.join(iotests.test_dir, dir3, 'test.img') | |
257 | mid_img = "../mid.img" | |
258 | backing_img = "../dir1/backing.img" | |
259 | ||
260 | backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img') | |
261 | mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img') | |
262 | ||
263 | def setUp(self): | |
264 | try: | |
265 | os.mkdir(os.path.join(iotests.test_dir, self.dir1)) | |
266 | os.mkdir(os.path.join(iotests.test_dir, self.dir2)) | |
267 | os.mkdir(os.path.join(iotests.test_dir, self.dir3)) | |
268 | except OSError as exception: | |
269 | if exception.errno != errno.EEXIST: | |
270 | raise | |
915365a9 | 271 | iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len) |
6bf0d1f4 JC |
272 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs) |
273 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img) | |
274 | qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs) | |
275 | qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img) | |
90c9b167 KW |
276 | qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', self.backing_img_abs) |
277 | qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', self.mid_img_abs) | |
6bf0d1f4 JC |
278 | self.vm = iotests.VM().add_drive(self.test_img) |
279 | self.vm.launch() | |
280 | ||
281 | def tearDown(self): | |
282 | self.vm.shutdown() | |
283 | os.remove(self.test_img) | |
284 | os.remove(self.mid_img_abs) | |
285 | os.remove(self.backing_img_abs) | |
286 | try: | |
287 | os.rmdir(os.path.join(iotests.test_dir, self.dir1)) | |
288 | os.rmdir(os.path.join(iotests.test_dir, self.dir3)) | |
289 | os.rmdir(os.path.join(iotests.test_dir, self.dir2)) | |
290 | except OSError as exception: | |
291 | if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY: | |
292 | raise | |
293 | ||
294 | def test_commit(self): | |
4de43470 | 295 | self.run_commit_test(self.mid_img, self.backing_img) |
90c9b167 KW |
296 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) |
297 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) | |
6bf0d1f4 JC |
298 | |
299 | def test_device_not_found(self): | |
300 | result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img) | |
301 | self.assert_qmp(result, 'error/class', 'DeviceNotFound') | |
302 | ||
303 | def test_top_same_base(self): | |
fb0a078f | 304 | self.assert_no_active_block_jobs() |
6bf0d1f4 JC |
305 | result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img) |
306 | self.assert_qmp(result, 'error/class', 'GenericError') | |
307 | self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img) | |
308 | ||
309 | def test_top_invalid(self): | |
fb0a078f | 310 | self.assert_no_active_block_jobs() |
6bf0d1f4 JC |
311 | result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img) |
312 | self.assert_qmp(result, 'error/class', 'GenericError') | |
313 | self.assert_qmp(result, 'error/desc', 'Top image file badfile not found') | |
314 | ||
315 | def test_base_invalid(self): | |
fb0a078f | 316 | self.assert_no_active_block_jobs() |
6bf0d1f4 JC |
317 | result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile') |
318 | self.assert_qmp(result, 'error/class', 'GenericError') | |
319 | self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found') | |
320 | ||
321 | def test_top_is_active(self): | |
4de43470 | 322 | self.run_commit_test(self.test_img, self.backing_img) |
90c9b167 KW |
323 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed")) |
324 | self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed")) | |
6bf0d1f4 JC |
325 | |
326 | def test_top_and_base_reversed(self): | |
fb0a078f | 327 | self.assert_no_active_block_jobs() |
6bf0d1f4 JC |
328 | result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img) |
329 | self.assert_qmp(result, 'error/class', 'GenericError') | |
330 | self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img) | |
331 | ||
747051cd JC |
332 | |
333 | class TestSetSpeed(ImageCommitTestCase): | |
334 | image_len = 80 * 1024 * 1024 # MB | |
335 | ||
336 | def setUp(self): | |
337 | qemu_img('create', backing_img, str(TestSetSpeed.image_len)) | |
338 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img) | |
339 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img) | |
90c9b167 KW |
340 | qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 0 512', test_img) |
341 | qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img) | |
51c493c5 | 342 | self.vm = iotests.VM().add_drive('blkdebug::' + test_img) |
747051cd JC |
343 | self.vm.launch() |
344 | ||
345 | def tearDown(self): | |
346 | self.vm.shutdown() | |
347 | os.remove(test_img) | |
348 | os.remove(mid_img) | |
349 | os.remove(backing_img) | |
350 | ||
351 | def test_set_speed(self): | |
fb0a078f | 352 | self.assert_no_active_block_jobs() |
747051cd | 353 | |
b59b3d57 | 354 | self.vm.pause_drive('drive0') |
747051cd JC |
355 | result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024) |
356 | self.assert_qmp(result, 'return', {}) | |
357 | ||
358 | # Ensure the speed we set was accepted | |
359 | result = self.vm.qmp('query-block-jobs') | |
360 | self.assert_qmp(result, 'return[0]/device', 'drive0') | |
361 | self.assert_qmp(result, 'return[0]/speed', 1024 * 1024) | |
362 | ||
b59b3d57 | 363 | self.cancel_and_wait(resume=True) |
747051cd | 364 | |
8b9a30ca FZ |
365 | class TestActiveZeroLengthImage(TestSingleDrive): |
366 | image_len = 0 | |
747051cd | 367 | |
bcdce5a7 AG |
368 | class TestReopenOverlay(ImageCommitTestCase): |
369 | image_len = 1024 * 1024 | |
370 | img0 = os.path.join(iotests.test_dir, '0.img') | |
371 | img1 = os.path.join(iotests.test_dir, '1.img') | |
372 | img2 = os.path.join(iotests.test_dir, '2.img') | |
373 | img3 = os.path.join(iotests.test_dir, '3.img') | |
374 | ||
375 | def setUp(self): | |
376 | iotests.create_image(self.img0, self.image_len) | |
377 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img0, self.img1) | |
378 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img1, self.img2) | |
379 | qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img2, self.img3) | |
380 | qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xab 0 128K', self.img1) | |
381 | self.vm = iotests.VM().add_drive(self.img3) | |
382 | self.vm.launch() | |
383 | ||
384 | def tearDown(self): | |
385 | self.vm.shutdown() | |
386 | os.remove(self.img0) | |
387 | os.remove(self.img1) | |
388 | os.remove(self.img2) | |
389 | os.remove(self.img3) | |
390 | ||
391 | # This tests what happens when the overlay image of the 'top' node | |
392 | # needs to be reopened in read-write mode in order to update the | |
393 | # backing image string. | |
394 | def test_reopen_overlay(self): | |
395 | self.run_commit_test(self.img1, self.img0) | |
396 | ||
747051cd JC |
397 | if __name__ == '__main__': |
398 | iotests.main(supported_fmts=['qcow2', 'qed']) |