tests/qemu-iotests/040

   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
  29 import errno
  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
  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
  75 class 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
 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
 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
 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)
 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
 365 class TestActiveZeroLengthImage(TestSingleDrive):
 366     image_len = 0
 367
 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
 397 if __name__ == '__main__':
 398     iotests.main(supported_fmts=['qcow2', 'qed'])