xref: /qemu/tests/qemu-iotests/040 (revision 57446e32) 
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):
61        self.assert_no_active_block_jobs()
62        result = self.vm.qmp('block-commit', device='drive0', top=top, base=base)
63        self.assert_qmp(result, 'return', {})
64        self.wait_for_complete(need_ready)
65
66    def run_default_commit_test(self):
67        self.assert_no_active_block_jobs()
68        result = self.vm.qmp('block-commit', device='drive0')
69        self.assert_qmp(result, 'return', {})
70        self.wait_for_complete()
71
72class TestSingleDrive(ImageCommitTestCase):
73    # Need some space after the copied data so that throttling is effective in
74    # tests that use it rather than just completing the job immediately
75    image_len = 2 * 1024 * 1024
76    test_len = 1 * 1024 * 256
77
78    def setUp(self):
79        iotests.create_image(backing_img, self.image_len)
80        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
81        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
82        qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img)
83        qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img)
84        self.vm = iotests.VM().add_drive(test_img, "node-name=top,backing.node-name=mid,backing.backing.node-name=base", interface="none")
85        self.vm.add_device("virtio-scsi-pci")
86        self.vm.add_device("scsi-hd,id=scsi0,drive=drive0")
87        self.vm.launch()
88
89    def tearDown(self):
90        self.vm.shutdown()
91        os.remove(test_img)
92        os.remove(mid_img)
93        os.remove(backing_img)
94
95    def test_commit(self):
96        self.run_commit_test(mid_img, backing_img)
97        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
98        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
99
100    def test_device_not_found(self):
101        result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
102        self.assert_qmp(result, 'error/class', 'DeviceNotFound')
103
104    def test_top_same_base(self):
105        self.assert_no_active_block_jobs()
106        result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
107        self.assert_qmp(result, 'error/class', 'GenericError')
108        self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
109
110    def test_top_invalid(self):
111        self.assert_no_active_block_jobs()
112        result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
113        self.assert_qmp(result, 'error/class', 'GenericError')
114        self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
115
116    def test_base_invalid(self):
117        self.assert_no_active_block_jobs()
118        result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
119        self.assert_qmp(result, 'error/class', 'GenericError')
120        self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
121
122    def test_top_is_active(self):
123        self.run_commit_test(test_img, backing_img, need_ready=True)
124        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
125        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
126
127    def test_top_is_default_active(self):
128        self.run_default_commit_test()
129        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
130        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
131
132    def test_top_and_base_reversed(self):
133        self.assert_no_active_block_jobs()
134        result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
135        self.assert_qmp(result, 'error/class', 'GenericError')
136        self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
137
138    # When the job is running on a BB that is automatically deleted on hot
139    # unplug, the job is cancelled when the device disappears
140    def test_hot_unplug(self):
141        if self.image_len == 0:
142            return
143
144        self.assert_no_active_block_jobs()
145        result = self.vm.qmp('block-commit', device='drive0', top=mid_img,
146                             base=backing_img, speed=(self.image_len / 4))
147        self.assert_qmp(result, 'return', {})
148        result = self.vm.qmp('device_del', id='scsi0')
149        self.assert_qmp(result, 'return', {})
150
151        cancelled = False
152        deleted = False
153        while not cancelled or not deleted:
154            for event in self.vm.get_qmp_events(wait=True):
155                if event['event'] == 'DEVICE_DELETED':
156                    self.assert_qmp(event, 'data/device', 'scsi0')
157                    deleted = True
158                elif event['event'] == 'BLOCK_JOB_CANCELLED':
159                    self.assert_qmp(event, 'data/device', 'drive0')
160                    cancelled = True
161                else:
162                    self.fail("Unexpected event %s" % (event['event']))
163
164        self.assert_no_active_block_jobs()
165
166    # Tests that the insertion of the commit_top filter node doesn't make a
167    # difference to query-blockstat
168    def test_implicit_node(self):
169        if self.image_len == 0:
170            return
171
172        self.assert_no_active_block_jobs()
173        result = self.vm.qmp('block-commit', device='drive0', top=mid_img,
174                             base=backing_img, speed=(self.image_len / 4))
175        self.assert_qmp(result, 'return', {})
176
177        result = self.vm.qmp('query-block')
178        self.assert_qmp(result, 'return[0]/inserted/file', test_img)
179        self.assert_qmp(result, 'return[0]/inserted/drv', iotests.imgfmt)
180        self.assert_qmp(result, 'return[0]/inserted/backing_file', mid_img)
181        self.assert_qmp(result, 'return[0]/inserted/backing_file_depth', 2)
182        self.assert_qmp(result, 'return[0]/inserted/image/filename', test_img)
183        self.assert_qmp(result, 'return[0]/inserted/image/backing-image/filename', mid_img)
184        self.assert_qmp(result, 'return[0]/inserted/image/backing-image/backing-image/filename', backing_img)
185
186        result = self.vm.qmp('query-blockstats')
187        self.assert_qmp(result, 'return[0]/node-name', 'top')
188        self.assert_qmp(result, 'return[0]/backing/node-name', 'mid')
189        self.assert_qmp(result, 'return[0]/backing/backing/node-name', 'base')
190
191        self.cancel_and_wait()
192        self.assert_no_active_block_jobs()
193
194class TestRelativePaths(ImageCommitTestCase):
195    image_len = 1 * 1024 * 1024
196    test_len = 1 * 1024 * 256
197
198    dir1 = "dir1"
199    dir2 = "dir2/"
200    dir3 = "dir2/dir3/"
201
202    test_img = os.path.join(iotests.test_dir, dir3, 'test.img')
203    mid_img = "../mid.img"
204    backing_img = "../dir1/backing.img"
205
206    backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img')
207    mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img')
208
209    def setUp(self):
210        try:
211            os.mkdir(os.path.join(iotests.test_dir, self.dir1))
212            os.mkdir(os.path.join(iotests.test_dir, self.dir2))
213            os.mkdir(os.path.join(iotests.test_dir, self.dir3))
214        except OSError as exception:
215            if exception.errno != errno.EEXIST:
216                raise
217        iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len)
218        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs)
219        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img)
220        qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs)
221        qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img)
222        qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', self.backing_img_abs)
223        qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', self.mid_img_abs)
224        self.vm = iotests.VM().add_drive(self.test_img)
225        self.vm.launch()
226
227    def tearDown(self):
228        self.vm.shutdown()
229        os.remove(self.test_img)
230        os.remove(self.mid_img_abs)
231        os.remove(self.backing_img_abs)
232        try:
233            os.rmdir(os.path.join(iotests.test_dir, self.dir1))
234            os.rmdir(os.path.join(iotests.test_dir, self.dir3))
235            os.rmdir(os.path.join(iotests.test_dir, self.dir2))
236        except OSError as exception:
237            if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY:
238                raise
239
240    def test_commit(self):
241        self.run_commit_test(self.mid_img, self.backing_img)
242        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
243        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
244
245    def test_device_not_found(self):
246        result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img)
247        self.assert_qmp(result, 'error/class', 'DeviceNotFound')
248
249    def test_top_same_base(self):
250        self.assert_no_active_block_jobs()
251        result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img)
252        self.assert_qmp(result, 'error/class', 'GenericError')
253        self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
254
255    def test_top_invalid(self):
256        self.assert_no_active_block_jobs()
257        result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
258        self.assert_qmp(result, 'error/class', 'GenericError')
259        self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
260
261    def test_base_invalid(self):
262        self.assert_no_active_block_jobs()
263        result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile')
264        self.assert_qmp(result, 'error/class', 'GenericError')
265        self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
266
267    def test_top_is_active(self):
268        self.run_commit_test(self.test_img, self.backing_img)
269        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
270        self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
271
272    def test_top_and_base_reversed(self):
273        self.assert_no_active_block_jobs()
274        result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img)
275        self.assert_qmp(result, 'error/class', 'GenericError')
276        self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
277
278
279class TestSetSpeed(ImageCommitTestCase):
280    image_len = 80 * 1024 * 1024 # MB
281
282    def setUp(self):
283        qemu_img('create', backing_img, str(TestSetSpeed.image_len))
284        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
285        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
286        qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 0 512', test_img)
287        qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img)
288        self.vm = iotests.VM().add_drive(test_img)
289        self.vm.launch()
290
291    def tearDown(self):
292        self.vm.shutdown()
293        os.remove(test_img)
294        os.remove(mid_img)
295        os.remove(backing_img)
296
297    def test_set_speed(self):
298        self.assert_no_active_block_jobs()
299
300        self.vm.pause_drive('drive0')
301        result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024)
302        self.assert_qmp(result, 'return', {})
303
304        # Ensure the speed we set was accepted
305        result = self.vm.qmp('query-block-jobs')
306        self.assert_qmp(result, 'return[0]/device', 'drive0')
307        self.assert_qmp(result, 'return[0]/speed', 1024 * 1024)
308
309        self.cancel_and_wait(resume=True)
310
311class TestActiveZeroLengthImage(TestSingleDrive):
312    image_len = 0
313
314class TestReopenOverlay(ImageCommitTestCase):
315    image_len = 1024 * 1024
316    img0 = os.path.join(iotests.test_dir, '0.img')
317    img1 = os.path.join(iotests.test_dir, '1.img')
318    img2 = os.path.join(iotests.test_dir, '2.img')
319    img3 = os.path.join(iotests.test_dir, '3.img')
320
321    def setUp(self):
322        iotests.create_image(self.img0, self.image_len)
323        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img0, self.img1)
324        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img1, self.img2)
325        qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.img2, self.img3)
326        qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xab 0 128K', self.img1)
327        self.vm = iotests.VM().add_drive(self.img3)
328        self.vm.launch()
329
330    def tearDown(self):
331        self.vm.shutdown()
332        os.remove(self.img0)
333        os.remove(self.img1)
334        os.remove(self.img2)
335        os.remove(self.img3)
336
337    # This tests what happens when the overlay image of the 'top' node
338    # needs to be reopened in read-write mode in order to update the
339    # backing image string.
340    def test_reopen_overlay(self):
341        self.run_commit_test(self.img1, self.img0)
342
343if __name__ == '__main__':
344    iotests.main(supported_fmts=['qcow2', 'qed'])
345