tests/qemu-iotests/030

   1 #!/usr/bin/env python
   2 #
   3 # Tests for image streaming.
   4 #
   5 # Copyright (C) 2012 IBM Corp.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 #
  20
  21 import os
  22 import iotests
  23 from iotests import qemu_img, qemu_io
  24
  25 backing_img = os.path.join(iotests.test_dir, 'backing.img')
  26 test_img = os.path.join(iotests.test_dir, 'test.img')
  27
  28 class ImageStreamingTestCase(iotests.QMPTestCase):
  29     '''Abstract base class for image streaming test cases'''
  30
  31     def assert_no_active_streams(self):
  32         result = self.vm.qmp('query-block-jobs')
  33         self.assert_qmp(result, 'return', [])
  34
  35     def cancel_and_wait(self, drive='drive0'):
  36         '''Cancel a block job and wait for it to finish'''
  37         result = self.vm.qmp('block-job-cancel', device=drive)
  38         self.assert_qmp(result, 'return', {})
  39
  40         cancelled = False
  41         while not cancelled:
  42             for event in self.vm.get_qmp_events(wait=True):
  43                 if event['event'] == 'BLOCK_JOB_CANCELLED':
  44                     self.assert_qmp(event, 'data/type', 'stream')
  45                     self.assert_qmp(event, 'data/device', drive)
  46                     cancelled = True
  47
  48         self.assert_no_active_streams()
  49
  50 class TestSingleDrive(ImageStreamingTestCase):
  51     image_len = 1 * 1024 * 1024 # MB
  52
  53     def setUp(self):
  54         qemu_img('create', backing_img, str(TestSingleDrive.image_len))
  55         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  56         self.vm = iotests.VM().add_drive(test_img)
  57         self.vm.launch()
  58
  59     def tearDown(self):
  60         self.vm.shutdown()
  61         os.remove(test_img)
  62         os.remove(backing_img)
  63
  64     def test_stream(self):
  65         self.assert_no_active_streams()
  66
  67         result = self.vm.qmp('block-stream', device='drive0')
  68         self.assert_qmp(result, 'return', {})
  69
  70         completed = False
  71         while not completed:
  72             for event in self.vm.get_qmp_events(wait=True):
  73                 if event['event'] == 'BLOCK_JOB_COMPLETED':
  74                     self.assert_qmp(event, 'data/type', 'stream')
  75                     self.assert_qmp(event, 'data/device', 'drive0')
  76                     self.assert_qmp(event, 'data/offset', self.image_len)
  77                     self.assert_qmp(event, 'data/len', self.image_len)
  78                     completed = True
  79
  80         self.assert_no_active_streams()
  81         self.vm.shutdown()
  82
  83         self.assertFalse('sectors not allocated' in qemu_io('-c', 'map', test_img),
  84                          'image file not fully populated after streaming')
  85
  86     def test_device_not_found(self):
  87         result = self.vm.qmp('block-stream', device='nonexistent')
  88         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
  89
  90 class TestStreamStop(ImageStreamingTestCase):
  91     image_len = 8 * 1024 * 1024 * 1024 # GB
  92
  93     def setUp(self):
  94         qemu_img('create', backing_img, str(TestStreamStop.image_len))
  95         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  96         self.vm = iotests.VM().add_drive(test_img)
  97         self.vm.launch()
  98
  99     def tearDown(self):
 100         self.vm.shutdown()
 101         os.remove(test_img)
 102         os.remove(backing_img)
 103
 104     def test_stream_stop(self):
 105         import time
 106
 107         self.assert_no_active_streams()
 108
 109         result = self.vm.qmp('block-stream', device='drive0')
 110         self.assert_qmp(result, 'return', {})
 111
 112         time.sleep(1)
 113         events = self.vm.get_qmp_events(wait=False)
 114         self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
 115
 116         self.cancel_and_wait()
 117
 118 class TestSetSpeed(ImageStreamingTestCase):
 119     image_len = 80 * 1024 * 1024 # MB
 120
 121     def setUp(self):
 122         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 123         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 124         self.vm = iotests.VM().add_drive(test_img)
 125         self.vm.launch()
 126
 127     def tearDown(self):
 128         self.vm.shutdown()
 129         os.remove(test_img)
 130         os.remove(backing_img)
 131
 132     # This is a short performance test which is not run by default.
 133     # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
 134     def perf_test_throughput(self):
 135         self.assert_no_active_streams()
 136
 137         result = self.vm.qmp('block-stream', device='drive0')
 138         self.assert_qmp(result, 'return', {})
 139
 140         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 141         self.assert_qmp(result, 'return', {})
 142
 143         completed = False
 144         while not completed:
 145             for event in self.vm.get_qmp_events(wait=True):
 146                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 147                     self.assert_qmp(event, 'data/type', 'stream')
 148                     self.assert_qmp(event, 'data/device', 'drive0')
 149                     self.assert_qmp(event, 'data/offset', self.image_len)
 150                     self.assert_qmp(event, 'data/len', self.image_len)
 151                     completed = True
 152
 153         self.assert_no_active_streams()
 154
 155     def test_set_speed(self):
 156         self.assert_no_active_streams()
 157
 158         result = self.vm.qmp('block-stream', device='drive0')
 159         self.assert_qmp(result, 'return', {})
 160
 161         # Default speed is 0
 162         result = self.vm.qmp('query-block-jobs')
 163         self.assert_qmp(result, 'return[0]/device', 'drive0')
 164         self.assert_qmp(result, 'return[0]/speed', 0)
 165
 166         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 167         self.assert_qmp(result, 'return', {})
 168
 169         # Ensure the speed we set was accepted
 170         result = self.vm.qmp('query-block-jobs')
 171         self.assert_qmp(result, 'return[0]/device', 'drive0')
 172         self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
 173
 174         self.cancel_and_wait()
 175
 176         # Check setting speed in block-stream works
 177         result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
 178         self.assert_qmp(result, 'return', {})
 179
 180         result = self.vm.qmp('query-block-jobs')
 181         self.assert_qmp(result, 'return[0]/device', 'drive0')
 182         self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
 183
 184         self.cancel_and_wait()
 185
 186     def test_set_speed_invalid(self):
 187         self.assert_no_active_streams()
 188
 189         result = self.vm.qmp('block-stream', device='drive0', speed=-1)
 190         self.assert_qmp(result, 'error/class', 'InvalidParameter')
 191         self.assert_qmp(result, 'error/data/name', 'speed')
 192
 193         self.assert_no_active_streams()
 194
 195         result = self.vm.qmp('block-stream', device='drive0')
 196         self.assert_qmp(result, 'return', {})
 197
 198         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
 199         self.assert_qmp(result, 'error/class', 'InvalidParameter')
 200         self.assert_qmp(result, 'error/data/name', 'speed')
 201
 202         self.cancel_and_wait()
 203
 204 if __name__ == '__main__':
 205     iotests.main(supported_fmts=['qcow2', 'qed'])