xref: /openbmc/qemu/tests/qemu-iotests/040 (revision e7bbc9b1) 
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
24import time
25import os
26import iotests
27from iotests import qemu_img, qemu_io
28import struct
29import errno
30
31backing_img = os.path.join(iotests.test_dir, 'backing.img')
32mid_img = os.path.join(iotests.test_dir, 'mid.img')
33test_img = os.path.join(iotests.test_dir, 'test.img')
34
35class ImageCommitTestCase(iotests.QMPTestCase):
36    '''Abstract base class for image commit test cases'''
37
38    def wait_for_complete(self, need_ready=False):
39        completed = False
40        ready = False
41        while not completed:
42            for event in self.vm.get_qmp_events(wait=True):
43                if event['event'] == 'BLOCK_JOB_COMPLETED':
44                    self.assert_qmp_absent(event, 'data/error')
45                    self.assert_qmp(event, 'data/type', 'commit')
46                    self.assert_qmp(event, 'data/device', 'drive0')
47                    self.assert_qmp(event, 'data/offset', event['data']['len'])
48                    if need_ready:
49                        self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event")
50                    completed = True
51                elif event['event'] == 'BLOCK_JOB_READY':
52                    ready = True
53                    self.assert_qmp(event, 'data/type', 'commit')
54                    self.assert_qmp(event, 'data/device', 'drive0')
55                    self.vm.qmp('block-job-complete', device='drive0')
56
57        self.assert_no_active_block_jobs()
58        self.vm.shutdown()
59
60    def run_commit_test(self, top, base, need_ready=False, node_names=False):
61        self.assert_no_active_block_jobs()
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)
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
75class TestSingleDrive(ImageCommitTestCase):
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
79    test_len = 1 * 1024 * 256
80
81    def setUp(self):
82        iotests.create_image(backing_img, self.image_len)
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)
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)
87        self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=mid,backing.backing.node-name=base", interface="none")
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
93        self.vm.add_device("scsi-hd,id=scsi0,drive=drive0")
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):
103        self.run_commit_test(mid_img, backing_img)
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"))
106
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
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):
117        self.assert_no_active_block_jobs()
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')
120        self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
121
122    def test_top_invalid(self):
123        self.assert_no_active_block_jobs()
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):
129        self.assert_no_active_block_jobs()
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
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
158    def test_top_is_active(self):
159        self.run_commit_test(test_img, backing_img, need_ready=True)
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"))
162
163    def test_top_is_default_active(self):
164        self.run_default_commit_test()
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"))
167
168    def test_top_and_base_reversed(self):
169        self.assert_no_active_block_jobs()
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')
172        self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
173
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
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,
198                             base=backing_img, speed=(self.image_len // 4))
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
213                elif event['event'] == 'JOB_STATUS_CHANGE':
214                    self.assert_qmp(event, 'data/id', 'drive0')
215                else:
216                    self.fail("Unexpected event %s" % (event['event']))
217
218        self.assert_no_active_block_jobs()
219
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,
228                             base=backing_img, speed=(self.image_len // 4))
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
248class 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
271        iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len)
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)
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)
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):
295        self.run_commit_test(self.mid_img, self.backing_img)
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"))
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):
304        self.assert_no_active_block_jobs()
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):
310        self.assert_no_active_block_jobs()
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):
316        self.assert_no_active_block_jobs()
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):
322        self.run_commit_test(self.test_img, self.backing_img)
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"))
325
326    def test_top_and_base_reversed(self):
327        self.assert_no_active_block_jobs()
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
332
333class 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)
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)
342        self.vm = iotests.VM().add_drive('blkdebug::' + test_img)
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):
352        self.assert_no_active_block_jobs()
353
354        self.vm.pause_drive('drive0')
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
363        self.cancel_and_wait(resume=True)
364
365class TestActiveZeroLengthImage(TestSingleDrive):
366    image_len = 0
367
368class 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
397if __name__ == '__main__':
398    iotests.main(supported_fmts=['qcow2', 'qed'])
399