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 run_commit_test(self, top, base, need_ready=False):
  39         self.assert_no_active_block_jobs()
  40         result = self.vm.qmp('block-commit', device='drive0', top=top, base=base)
  41         self.assert_qmp(result, 'return', {})
  42
  43         completed = False
  44         ready = False
  45         while not completed:
  46             for event in self.vm.get_qmp_events(wait=True):
  47                 if event['event'] == 'BLOCK_JOB_COMPLETED':
  48                     self.assert_qmp(event, 'data/type', 'commit')
  49                     self.assert_qmp(event, 'data/device', 'drive0')
  50                     self.assert_qmp(event, 'data/offset', self.image_len)
  51                     self.assert_qmp(event, 'data/len', self.image_len)
  52                     if need_ready:
  53                         self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event")
  54                     completed = True
  55                 elif event['event'] == 'BLOCK_JOB_READY':
  56                     ready = True
  57                     self.assert_qmp(event, 'data/type', 'commit')
  58                     self.assert_qmp(event, 'data/device', 'drive0')
  59                     self.assert_qmp(event, 'data/len', self.image_len)
  60                     self.vm.qmp('block-job-complete', device='drive0')
  61
  62         self.assert_no_active_block_jobs()
  63         self.vm.shutdown()
  64
  65 class TestSingleDrive(ImageCommitTestCase):
  66     image_len = 1 * 1024 * 1024
  67     test_len = 1 * 1024 * 256
  68
  69     def setUp(self):
  70         iotests.create_image(backing_img, self.image_len)
  71         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
  72         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
  73         qemu_io('-c', 'write -P 0xab 0 524288', backing_img)
  74         qemu_io('-c', 'write -P 0xef 524288 524288', mid_img)
  75         self.vm = iotests.VM().add_drive(test_img)
  76         self.vm.launch()
  77
  78     def tearDown(self):
  79         self.vm.shutdown()
  80         os.remove(test_img)
  81         os.remove(mid_img)
  82         os.remove(backing_img)
  83
  84     def test_commit(self):
  85         self.run_commit_test(mid_img, backing_img)
  86         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
  87         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
  88
  89     def test_device_not_found(self):
  90         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
  91         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
  92
  93     def test_top_same_base(self):
  94         self.assert_no_active_block_jobs()
  95         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
  96         self.assert_qmp(result, 'error/class', 'GenericError')
  97         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
  98
  99     def test_top_invalid(self):
 100         self.assert_no_active_block_jobs()
 101         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
 102         self.assert_qmp(result, 'error/class', 'GenericError')
 103         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 104
 105     def test_base_invalid(self):
 106         self.assert_no_active_block_jobs()
 107         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
 108         self.assert_qmp(result, 'error/class', 'GenericError')
 109         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 110
 111     def test_top_is_active(self):
 112         self.run_commit_test(test_img, backing_img, need_ready=True)
 113         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
 114         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 115
 116     def test_top_and_base_reversed(self):
 117         self.assert_no_active_block_jobs()
 118         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
 119         self.assert_qmp(result, 'error/class', 'GenericError')
 120         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
 121
 122     def test_top_omitted(self):
 123         self.assert_no_active_block_jobs()
 124         result = self.vm.qmp('block-commit', device='drive0')
 125         self.assert_qmp(result, 'error/class', 'GenericError')
 126         self.assert_qmp(result, 'error/desc', "Parameter 'top' is missing")
 127
 128 class TestRelativePaths(ImageCommitTestCase):
 129     image_len = 1 * 1024 * 1024
 130     test_len = 1 * 1024 * 256
 131
 132     dir1 = "dir1"
 133     dir2 = "dir2/"
 134     dir3 = "dir2/dir3/"
 135
 136     test_img = os.path.join(iotests.test_dir, dir3, 'test.img')
 137     mid_img = "../mid.img"
 138     backing_img = "../dir1/backing.img"
 139
 140     backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img')
 141     mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img')
 142
 143     def setUp(self):
 144         try:
 145             os.mkdir(os.path.join(iotests.test_dir, self.dir1))
 146             os.mkdir(os.path.join(iotests.test_dir, self.dir2))
 147             os.mkdir(os.path.join(iotests.test_dir, self.dir3))
 148         except OSError as exception:
 149             if exception.errno != errno.EEXIST:
 150                 raise
 151         iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len)
 152         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs)
 153         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img)
 154         qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs)
 155         qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img)
 156         qemu_io('-c', 'write -P 0xab 0 524288', self.backing_img_abs)
 157         qemu_io('-c', 'write -P 0xef 524288 524288', self.mid_img_abs)
 158         self.vm = iotests.VM().add_drive(self.test_img)
 159         self.vm.launch()
 160
 161     def tearDown(self):
 162         self.vm.shutdown()
 163         os.remove(self.test_img)
 164         os.remove(self.mid_img_abs)
 165         os.remove(self.backing_img_abs)
 166         try:
 167             os.rmdir(os.path.join(iotests.test_dir, self.dir1))
 168             os.rmdir(os.path.join(iotests.test_dir, self.dir3))
 169             os.rmdir(os.path.join(iotests.test_dir, self.dir2))
 170         except OSError as exception:
 171             if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY:
 172                 raise
 173
 174     def test_commit(self):
 175         self.run_commit_test(self.mid_img, self.backing_img)
 176         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 177         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 178
 179     def test_device_not_found(self):
 180         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img)
 181         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 182
 183     def test_top_same_base(self):
 184         self.assert_no_active_block_jobs()
 185         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img)
 186         self.assert_qmp(result, 'error/class', 'GenericError')
 187         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 188
 189     def test_top_invalid(self):
 190         self.assert_no_active_block_jobs()
 191         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
 192         self.assert_qmp(result, 'error/class', 'GenericError')
 193         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 194
 195     def test_base_invalid(self):
 196         self.assert_no_active_block_jobs()
 197         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile')
 198         self.assert_qmp(result, 'error/class', 'GenericError')
 199         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 200
 201     def test_top_is_active(self):
 202         self.run_commit_test(self.test_img, self.backing_img)
 203         self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 204         self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 205
 206     def test_top_and_base_reversed(self):
 207         self.assert_no_active_block_jobs()
 208         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img)
 209         self.assert_qmp(result, 'error/class', 'GenericError')
 210         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 211
 212
 213 class TestSetSpeed(ImageCommitTestCase):
 214     image_len = 80 * 1024 * 1024 # MB
 215
 216     def setUp(self):
 217         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 218         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
 219         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
 220         qemu_io('-c', 'write -P 0x1 0 512', test_img)
 221         qemu_io('-c', 'write -P 0xef 524288 524288', mid_img)
 222         self.vm = iotests.VM().add_drive(test_img)
 223         self.vm.launch()
 224
 225     def tearDown(self):
 226         self.vm.shutdown()
 227         os.remove(test_img)
 228         os.remove(mid_img)
 229         os.remove(backing_img)
 230
 231     def test_set_speed(self):
 232         self.assert_no_active_block_jobs()
 233
 234         self.vm.pause_drive('drive0')
 235         result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024)
 236         self.assert_qmp(result, 'return', {})
 237
 238         # Ensure the speed we set was accepted
 239         result = self.vm.qmp('query-block-jobs')
 240         self.assert_qmp(result, 'return[0]/device', 'drive0')
 241         self.assert_qmp(result, 'return[0]/speed', 1024 * 1024)
 242
 243         self.cancel_and_wait(resume=True)
 244
 245 class TestActiveZeroLengthImage(TestSingleDrive):
 246     image_len = 0
 247
 248 if __name__ == '__main__':
 249     iotests.main(supported_fmts=['qcow2', 'qed'])