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(event, 'data/type', 'commit')
  45                     self.assert_qmp(event, 'data/device', 'drive0')
  46                     self.assert_qmp(event, 'data/offset', self.image_len)
  47                     self.assert_qmp(event, 'data/len', self.image_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.assert_qmp(event, 'data/len', self.image_len)
  56                     self.vm.qmp('block-job-complete', device='drive0')
  57
  58         self.assert_no_active_block_jobs()
  59         self.vm.shutdown()
  60
  61     def run_commit_test(self, top, base, need_ready=False):
  62         self.assert_no_active_block_jobs()
  63         result = self.vm.qmp('block-commit', device='drive0', top=top, base=base)
  64         self.assert_qmp(result, 'return', {})
  65         self.wait_for_complete(need_ready)
  66
  67     def run_default_commit_test(self):
  68         self.assert_no_active_block_jobs()
  69         result = self.vm.qmp('block-commit', device='drive0')
  70         self.assert_qmp(result, 'return', {})
  71         self.wait_for_complete()
  72
  73 class TestSingleDrive(ImageCommitTestCase):
  74     image_len = 1 * 1024 * 1024
  75     test_len = 1 * 1024 * 256
  76
  77     def setUp(self):
  78         iotests.create_image(backing_img, self.image_len)
  79         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
  80         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
  81         qemu_io('-c', 'write -P 0xab 0 524288', backing_img)
  82         qemu_io('-c', 'write -P 0xef 524288 524288', mid_img)
  83         self.vm = iotests.VM().add_drive(test_img)
  84         self.vm.launch()
  85
  86     def tearDown(self):
  87         self.vm.shutdown()
  88         os.remove(test_img)
  89         os.remove(mid_img)
  90         os.remove(backing_img)
  91
  92     def test_commit(self):
  93         self.run_commit_test(mid_img, backing_img)
  94         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
  95         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
  96
  97     def test_device_not_found(self):
  98         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
  99         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 100
 101     def test_top_same_base(self):
 102         self.assert_no_active_block_jobs()
 103         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
 104         self.assert_qmp(result, 'error/class', 'GenericError')
 105         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
 106
 107     def test_top_invalid(self):
 108         self.assert_no_active_block_jobs()
 109         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
 110         self.assert_qmp(result, 'error/class', 'GenericError')
 111         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 112
 113     def test_base_invalid(self):
 114         self.assert_no_active_block_jobs()
 115         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
 116         self.assert_qmp(result, 'error/class', 'GenericError')
 117         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 118
 119     def test_top_is_active(self):
 120         self.run_commit_test(test_img, backing_img, need_ready=True)
 121         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
 122         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 123
 124     def test_top_is_default_active(self):
 125         self.run_default_commit_test()
 126         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
 127         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 128
 129     def test_top_and_base_reversed(self):
 130         self.assert_no_active_block_jobs()
 131         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
 132         self.assert_qmp(result, 'error/class', 'GenericError')
 133         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
 134
 135
 136 class TestRelativePaths(ImageCommitTestCase):
 137     image_len = 1 * 1024 * 1024
 138     test_len = 1 * 1024 * 256
 139
 140     dir1 = "dir1"
 141     dir2 = "dir2/"
 142     dir3 = "dir2/dir3/"
 143
 144     test_img = os.path.join(iotests.test_dir, dir3, 'test.img')
 145     mid_img = "../mid.img"
 146     backing_img = "../dir1/backing.img"
 147
 148     backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img')
 149     mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img')
 150
 151     def setUp(self):
 152         try:
 153             os.mkdir(os.path.join(iotests.test_dir, self.dir1))
 154             os.mkdir(os.path.join(iotests.test_dir, self.dir2))
 155             os.mkdir(os.path.join(iotests.test_dir, self.dir3))
 156         except OSError as exception:
 157             if exception.errno != errno.EEXIST:
 158                 raise
 159         iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len)
 160         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs)
 161         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img)
 162         qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs)
 163         qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img)
 164         qemu_io('-c', 'write -P 0xab 0 524288', self.backing_img_abs)
 165         qemu_io('-c', 'write -P 0xef 524288 524288', self.mid_img_abs)
 166         self.vm = iotests.VM().add_drive(self.test_img)
 167         self.vm.launch()
 168
 169     def tearDown(self):
 170         self.vm.shutdown()
 171         os.remove(self.test_img)
 172         os.remove(self.mid_img_abs)
 173         os.remove(self.backing_img_abs)
 174         try:
 175             os.rmdir(os.path.join(iotests.test_dir, self.dir1))
 176             os.rmdir(os.path.join(iotests.test_dir, self.dir3))
 177             os.rmdir(os.path.join(iotests.test_dir, self.dir2))
 178         except OSError as exception:
 179             if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY:
 180                 raise
 181
 182     def test_commit(self):
 183         self.run_commit_test(self.mid_img, self.backing_img)
 184         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 185         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 186
 187     def test_device_not_found(self):
 188         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img)
 189         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 190
 191     def test_top_same_base(self):
 192         self.assert_no_active_block_jobs()
 193         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img)
 194         self.assert_qmp(result, 'error/class', 'GenericError')
 195         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 196
 197     def test_top_invalid(self):
 198         self.assert_no_active_block_jobs()
 199         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
 200         self.assert_qmp(result, 'error/class', 'GenericError')
 201         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 202
 203     def test_base_invalid(self):
 204         self.assert_no_active_block_jobs()
 205         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile')
 206         self.assert_qmp(result, 'error/class', 'GenericError')
 207         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 208
 209     def test_top_is_active(self):
 210         self.run_commit_test(self.test_img, self.backing_img)
 211         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 212         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 213
 214     def test_top_and_base_reversed(self):
 215         self.assert_no_active_block_jobs()
 216         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img)
 217         self.assert_qmp(result, 'error/class', 'GenericError')
 218         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 219
 220
 221 class TestSetSpeed(ImageCommitTestCase):
 222     image_len = 80 * 1024 * 1024 # MB
 223
 224     def setUp(self):
 225         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 226         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
 227         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
 228         qemu_io('-c', 'write -P 0x1 0 512', test_img)
 229         qemu_io('-c', 'write -P 0xef 524288 524288', mid_img)
 230         self.vm = iotests.VM().add_drive(test_img)
 231         self.vm.launch()
 232
 233     def tearDown(self):
 234         self.vm.shutdown()
 235         os.remove(test_img)
 236         os.remove(mid_img)
 237         os.remove(backing_img)
 238
 239     def test_set_speed(self):
 240         self.assert_no_active_block_jobs()
 241
 242         self.vm.pause_drive('drive0')
 243         result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024)
 244         self.assert_qmp(result, 'return', {})
 245
 246         # Ensure the speed we set was accepted
 247         result = self.vm.qmp('query-block-jobs')
 248         self.assert_qmp(result, 'return[0]/device', 'drive0')
 249         self.assert_qmp(result, 'return[0]/speed', 1024 * 1024)
 250
 251         self.cancel_and_wait(resume=True)
 252
 253 class TestActiveZeroLengthImage(TestSingleDrive):
 254     image_len = 0
 255
 256 if __name__ == '__main__':
 257     iotests.main(supported_fmts=['qcow2', 'qed'])