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 assert_no_active_commit(self):
  39         result = self.vm.qmp('query-block-jobs')
  40         self.assert_qmp(result, 'return', [])
  41
  42     def cancel_and_wait(self, drive='drive0'):
  43         '''Cancel a block job and wait for it to finish'''
  44         result = self.vm.qmp('block-job-cancel', device=drive)
  45         self.assert_qmp(result, 'return', {})
  46
  47         cancelled = False
  48         while not cancelled:
  49             for event in self.vm.get_qmp_events(wait=True):
  50                 if event['event'] == 'BLOCK_JOB_CANCELLED':
  51                     self.assert_qmp(event, 'data/type', 'commit')
  52                     self.assert_qmp(event, 'data/device', drive)
  53                     cancelled = True
  54
  55         self.assert_no_active_commit()
  56
  57     def create_image(self, name, size):
  58         file = open(name, 'w')
  59         i = 0
  60         while i < size:
  61             sector = struct.pack('>l504xl', i / 512, i / 512)
  62             file.write(sector)
  63             i = i + 512
  64         file.close()
  65
  66
  67 class TestSingleDrive(ImageCommitTestCase):
  68     image_len = 1 * 1024 * 1024
  69     test_len = 1 * 1024 * 256
  70
  71     def setUp(self):
  72         self.create_image(backing_img, TestSingleDrive.image_len)
  73         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
  74         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
  75         qemu_io('-c', 'write -P 0xab 0 524288', backing_img)
  76         qemu_io('-c', 'write -P 0xef 524288 524288', mid_img)
  77         self.vm = iotests.VM().add_drive(test_img)
  78         self.vm.launch()
  79
  80     def tearDown(self):
  81         self.vm.shutdown()
  82         os.remove(test_img)
  83         os.remove(mid_img)
  84         os.remove(backing_img)
  85
  86     def test_commit(self):
  87         self.assert_no_active_commit()
  88         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img)
  89         self.assert_qmp(result, 'return', {})
  90
  91         completed = False
  92         while not completed:
  93             for event in self.vm.get_qmp_events(wait=True):
  94                 if event['event'] == 'BLOCK_JOB_COMPLETED':
  95                     self.assert_qmp(event, 'data/type', 'commit')
  96                     self.assert_qmp(event, 'data/device', 'drive0')
  97                     self.assert_qmp(event, 'data/offset', self.image_len)
  98                     self.assert_qmp(event, 'data/len', self.image_len)
  99                     completed = True
 100
 101         self.assert_no_active_commit()
 102         self.vm.shutdown()
 103
 104         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
 105         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 106
 107     def test_device_not_found(self):
 108         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
 109         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 110
 111     def test_top_same_base(self):
 112         self.assert_no_active_commit()
 113         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
 114         self.assert_qmp(result, 'error/class', 'GenericError')
 115         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
 116
 117     def test_top_invalid(self):
 118         self.assert_no_active_commit()
 119         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
 120         self.assert_qmp(result, 'error/class', 'GenericError')
 121         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 122
 123     def test_base_invalid(self):
 124         self.assert_no_active_commit()
 125         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
 126         self.assert_qmp(result, 'error/class', 'GenericError')
 127         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 128
 129     def test_top_is_active(self):
 130         self.assert_no_active_commit()
 131         result = self.vm.qmp('block-commit', device='drive0', top='%s' % test_img, base='%s' % backing_img)
 132         self.assert_qmp(result, 'error/class', 'GenericError')
 133         self.assert_qmp(result, 'error/desc', 'Top image as the active layer is currently unsupported')
 134
 135     def test_top_and_base_reversed(self):
 136         self.assert_no_active_commit()
 137         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
 138         self.assert_qmp(result, 'error/class', 'GenericError')
 139         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
 140
 141     def test_top_omitted(self):
 142         self.assert_no_active_commit()
 143         result = self.vm.qmp('block-commit', device='drive0')
 144         self.assert_qmp(result, 'error/class', 'GenericError')
 145         self.assert_qmp(result, 'error/desc', "Parameter 'top' is missing")
 146
 147 class TestRelativePaths(ImageCommitTestCase):
 148     image_len = 1 * 1024 * 1024
 149     test_len = 1 * 1024 * 256
 150
 151     dir1 = "dir1"
 152     dir2 = "dir2/"
 153     dir3 = "dir2/dir3/"
 154
 155     test_img = os.path.join(iotests.test_dir, dir3, 'test.img')
 156     mid_img = "../mid.img"
 157     backing_img = "../dir1/backing.img"
 158
 159     backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img')
 160     mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img')
 161
 162     def setUp(self):
 163         try:
 164             os.mkdir(os.path.join(iotests.test_dir, self.dir1))
 165             os.mkdir(os.path.join(iotests.test_dir, self.dir2))
 166             os.mkdir(os.path.join(iotests.test_dir, self.dir3))
 167         except OSError as exception:
 168             if exception.errno != errno.EEXIST:
 169                 raise
 170         self.create_image(self.backing_img_abs, TestRelativePaths.image_len)
 171         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs)
 172         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img)
 173         qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs)
 174         qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img)
 175         qemu_io('-c', 'write -P 0xab 0 524288', self.backing_img_abs)
 176         qemu_io('-c', 'write -P 0xef 524288 524288', self.mid_img_abs)
 177         self.vm = iotests.VM().add_drive(self.test_img)
 178         self.vm.launch()
 179
 180     def tearDown(self):
 181         self.vm.shutdown()
 182         os.remove(self.test_img)
 183         os.remove(self.mid_img_abs)
 184         os.remove(self.backing_img_abs)
 185         try:
 186             os.rmdir(os.path.join(iotests.test_dir, self.dir1))
 187             os.rmdir(os.path.join(iotests.test_dir, self.dir3))
 188             os.rmdir(os.path.join(iotests.test_dir, self.dir2))
 189         except OSError as exception:
 190             if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY:
 191                 raise
 192
 193     def test_commit(self):
 194         self.assert_no_active_commit()
 195         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img)
 196         self.assert_qmp(result, 'return', {})
 197
 198         completed = False
 199         while not completed:
 200             for event in self.vm.get_qmp_events(wait=True):
 201                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 202                     self.assert_qmp(event, 'data/type', 'commit')
 203                     self.assert_qmp(event, 'data/device', 'drive0')
 204                     self.assert_qmp(event, 'data/offset', self.image_len)
 205                     self.assert_qmp(event, 'data/len', self.image_len)
 206                     completed = True
 207
 208         self.assert_no_active_commit()
 209         self.vm.shutdown()
 210
 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_device_not_found(self):
 215         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img)
 216         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 217
 218     def test_top_same_base(self):
 219         self.assert_no_active_commit()
 220         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img)
 221         self.assert_qmp(result, 'error/class', 'GenericError')
 222         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 223
 224     def test_top_invalid(self):
 225         self.assert_no_active_commit()
 226         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
 227         self.assert_qmp(result, 'error/class', 'GenericError')
 228         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 229
 230     def test_base_invalid(self):
 231         self.assert_no_active_commit()
 232         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile')
 233         self.assert_qmp(result, 'error/class', 'GenericError')
 234         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 235
 236     def test_top_is_active(self):
 237         self.assert_no_active_commit()
 238         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.test_img, base='%s' % self.backing_img)
 239         self.assert_qmp(result, 'error/class', 'GenericError')
 240         self.assert_qmp(result, 'error/desc', 'Top image as the active layer is currently unsupported')
 241
 242     def test_top_and_base_reversed(self):
 243         self.assert_no_active_commit()
 244         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img)
 245         self.assert_qmp(result, 'error/class', 'GenericError')
 246         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 247
 248
 249 class TestSetSpeed(ImageCommitTestCase):
 250     image_len = 80 * 1024 * 1024 # MB
 251
 252     def setUp(self):
 253         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 254         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
 255         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
 256         self.vm = iotests.VM().add_drive(test_img)
 257         self.vm.launch()
 258
 259     def tearDown(self):
 260         self.vm.shutdown()
 261         os.remove(test_img)
 262         os.remove(mid_img)
 263         os.remove(backing_img)
 264
 265     def test_set_speed(self):
 266         self.assert_no_active_commit()
 267
 268         result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024)
 269         self.assert_qmp(result, 'return', {})
 270
 271         # Ensure the speed we set was accepted
 272         result = self.vm.qmp('query-block-jobs')
 273         self.assert_qmp(result, 'return[0]/device', 'drive0')
 274         self.assert_qmp(result, 'return[0]/speed', 1024 * 1024)
 275
 276         self.cancel_and_wait()
 277
 278
 279 if __name__ == '__main__':
 280     iotests.main(supported_fmts=['qcow2', 'qed'])