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', event['data']['len'])
  47                     if need_ready:
  48                         self.assertTrue(ready, "Expecting BLOCK_JOB_COMPLETED event")
  49                     completed = True
  50                 elif event['event'] == 'BLOCK_JOB_READY':
  51                     ready = True
  52                     self.assert_qmp(event, 'data/type', 'commit')
  53                     self.assert_qmp(event, 'data/device', 'drive0')
  54                     self.vm.qmp('block-job-complete', device='drive0')
  55
  56         self.assert_no_active_block_jobs()
  57         self.vm.shutdown()
  58
  59     def run_commit_test(self, top, base, need_ready=False):
  60         self.assert_no_active_block_jobs()
  61         result = self.vm.qmp('block-commit', device='drive0', top=top, base=base)
  62         self.assert_qmp(result, 'return', {})
  63         self.wait_for_complete(need_ready)
  64
  65     def run_default_commit_test(self):
  66         self.assert_no_active_block_jobs()
  67         result = self.vm.qmp('block-commit', device='drive0')
  68         self.assert_qmp(result, 'return', {})
  69         self.wait_for_complete()
  70
  71 class TestSingleDrive(ImageCommitTestCase):
  72     image_len = 1 * 1024 * 1024
  73     test_len = 1 * 1024 * 256
  74
  75     def setUp(self):
  76         iotests.create_image(backing_img, self.image_len)
  77         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
  78         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
  79         qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', backing_img)
  80         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img)
  81         self.vm = iotests.VM().add_drive(test_img)
  82         self.vm.launch()
  83
  84     def tearDown(self):
  85         self.vm.shutdown()
  86         os.remove(test_img)
  87         os.remove(mid_img)
  88         os.remove(backing_img)
  89
  90     def test_commit(self):
  91         self.run_commit_test(mid_img, backing_img)
  92         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
  93         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
  94
  95     def test_device_not_found(self):
  96         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
  97         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
  98
  99     def test_top_same_base(self):
 100         self.assert_no_active_block_jobs()
 101         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
 102         self.assert_qmp(result, 'error/class', 'GenericError')
 103         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % backing_img)
 104
 105     def test_top_invalid(self):
 106         self.assert_no_active_block_jobs()
 107         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
 108         self.assert_qmp(result, 'error/class', 'GenericError')
 109         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 110
 111     def test_base_invalid(self):
 112         self.assert_no_active_block_jobs()
 113         result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
 114         self.assert_qmp(result, 'error/class', 'GenericError')
 115         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 116
 117     def test_top_is_active(self):
 118         self.run_commit_test(test_img, backing_img, need_ready=True)
 119         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
 120         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
 121
 122     def test_top_is_default_active(self):
 123         self.run_default_commit_test()
 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_and_base_reversed(self):
 128         self.assert_no_active_block_jobs()
 129         result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
 130         self.assert_qmp(result, 'error/class', 'GenericError')
 131         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % mid_img)
 132
 133
 134 class TestRelativePaths(ImageCommitTestCase):
 135     image_len = 1 * 1024 * 1024
 136     test_len = 1 * 1024 * 256
 137
 138     dir1 = "dir1"
 139     dir2 = "dir2/"
 140     dir3 = "dir2/dir3/"
 141
 142     test_img = os.path.join(iotests.test_dir, dir3, 'test.img')
 143     mid_img = "../mid.img"
 144     backing_img = "../dir1/backing.img"
 145
 146     backing_img_abs = os.path.join(iotests.test_dir, dir1, 'backing.img')
 147     mid_img_abs = os.path.join(iotests.test_dir, dir2, 'mid.img')
 148
 149     def setUp(self):
 150         try:
 151             os.mkdir(os.path.join(iotests.test_dir, self.dir1))
 152             os.mkdir(os.path.join(iotests.test_dir, self.dir2))
 153             os.mkdir(os.path.join(iotests.test_dir, self.dir3))
 154         except OSError as exception:
 155             if exception.errno != errno.EEXIST:
 156                 raise
 157         iotests.create_image(self.backing_img_abs, TestRelativePaths.image_len)
 158         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.backing_img_abs, self.mid_img_abs)
 159         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % self.mid_img_abs, self.test_img)
 160         qemu_img('rebase', '-u', '-b', self.backing_img, self.mid_img_abs)
 161         qemu_img('rebase', '-u', '-b', self.mid_img, self.test_img)
 162         qemu_io('-f', 'raw', '-c', 'write -P 0xab 0 524288', self.backing_img_abs)
 163         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', self.mid_img_abs)
 164         self.vm = iotests.VM().add_drive(self.test_img)
 165         self.vm.launch()
 166
 167     def tearDown(self):
 168         self.vm.shutdown()
 169         os.remove(self.test_img)
 170         os.remove(self.mid_img_abs)
 171         os.remove(self.backing_img_abs)
 172         try:
 173             os.rmdir(os.path.join(iotests.test_dir, self.dir1))
 174             os.rmdir(os.path.join(iotests.test_dir, self.dir3))
 175             os.rmdir(os.path.join(iotests.test_dir, self.dir2))
 176         except OSError as exception:
 177             if exception.errno != errno.EEXIST and exception.errno != errno.ENOTEMPTY:
 178                 raise
 179
 180     def test_commit(self):
 181         self.run_commit_test(self.mid_img, self.backing_img)
 182         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 183         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 184
 185     def test_device_not_found(self):
 186         result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % self.mid_img)
 187         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
 188
 189     def test_top_same_base(self):
 190         self.assert_no_active_block_jobs()
 191         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='%s' % self.mid_img)
 192         self.assert_qmp(result, 'error/class', 'GenericError')
 193         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 194
 195     def test_top_invalid(self):
 196         self.assert_no_active_block_jobs()
 197         result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % self.backing_img)
 198         self.assert_qmp(result, 'error/class', 'GenericError')
 199         self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
 200
 201     def test_base_invalid(self):
 202         self.assert_no_active_block_jobs()
 203         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.mid_img, base='badfile')
 204         self.assert_qmp(result, 'error/class', 'GenericError')
 205         self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
 206
 207     def test_top_is_active(self):
 208         self.run_commit_test(self.test_img, self.backing_img)
 209         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xab 0 524288', self.backing_img_abs).find("verification failed"))
 210         self.assertEqual(-1, qemu_io('-f', 'raw', '-c', 'read -P 0xef 524288 524288', self.backing_img_abs).find("verification failed"))
 211
 212     def test_top_and_base_reversed(self):
 213         self.assert_no_active_block_jobs()
 214         result = self.vm.qmp('block-commit', device='drive0', top='%s' % self.backing_img, base='%s' % self.mid_img)
 215         self.assert_qmp(result, 'error/class', 'GenericError')
 216         self.assert_qmp(result, 'error/desc', 'Base \'%s\' not found' % self.mid_img)
 217
 218
 219 class TestSetSpeed(ImageCommitTestCase):
 220     image_len = 80 * 1024 * 1024 # MB
 221
 222     def setUp(self):
 223         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 224         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
 225         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
 226         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0x1 0 512', test_img)
 227         qemu_io('-f', iotests.imgfmt, '-c', 'write -P 0xef 524288 524288', mid_img)
 228         self.vm = iotests.VM().add_drive(test_img)
 229         self.vm.launch()
 230
 231     def tearDown(self):
 232         self.vm.shutdown()
 233         os.remove(test_img)
 234         os.remove(mid_img)
 235         os.remove(backing_img)
 236
 237     def test_set_speed(self):
 238         self.assert_no_active_block_jobs()
 239
 240         self.vm.pause_drive('drive0')
 241         result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=1024 * 1024)
 242         self.assert_qmp(result, 'return', {})
 243
 244         # Ensure the speed we set was accepted
 245         result = self.vm.qmp('query-block-jobs')
 246         self.assert_qmp(result, 'return[0]/device', 'drive0')
 247         self.assert_qmp(result, 'return[0]/speed', 1024 * 1024)
 248
 249         self.cancel_and_wait(resume=True)
 250
 251 class TestActiveZeroLengthImage(TestSingleDrive):
 252     image_len = 0
 253
 254 if __name__ == '__main__':
 255     iotests.main(supported_fmts=['qcow2', 'qed'])