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
  82         self.assertFalse('sectors not allocated' in qemu_io('-c', 'map', test_img),
  83                          'image file not fully populated after streaming')
  84
  85     def test_device_not_found(self):
  86         result = self.vm.qmp('block-stream', device='nonexistent')
  87         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
  88
  89 class TestStreamStop(ImageStreamingTestCase):
  90     image_len = 8 * 1024 * 1024 * 1024 # GB
  91
  92     def setUp(self):
  93         qemu_img('create', backing_img, str(TestStreamStop.image_len))
  94         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  95         self.vm = iotests.VM().add_drive(test_img)
  96         self.vm.launch()
  97
  98     def tearDown(self):
  99         self.vm.shutdown()
 100         os.remove(test_img)
 101         os.remove(backing_img)
 102
 103     def test_stream_stop(self):
 104         import time
 105
 106         self.assert_no_active_streams()
 107
 108         result = self.vm.qmp('block-stream', device='drive0')
 109         self.assert_qmp(result, 'return', {})
 110
 111         time.sleep(1)
 112         events = self.vm.get_qmp_events(wait=False)
 113         self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
 114
 115         self.cancel_and_wait()
 116
 117 class TestSetSpeed(ImageStreamingTestCase):
 118     image_len = 80 * 1024 * 1024 # MB
 119
 120     def setUp(self):
 121         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 122         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 123         self.vm = iotests.VM().add_drive(test_img)
 124         self.vm.launch()
 125
 126     def tearDown(self):
 127         self.vm.shutdown()
 128         os.remove(test_img)
 129         os.remove(backing_img)
 130
 131     # This is a short performance test which is not run by default.
 132     # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
 133     def perf_test_throughput(self):
 134         self.assert_no_active_streams()
 135
 136         result = self.vm.qmp('block-stream', device='drive0')
 137         self.assert_qmp(result, 'return', {})
 138
 139         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 140         self.assert_qmp(result, 'return', {})
 141
 142         completed = False
 143         while not completed:
 144             for event in self.vm.get_qmp_events(wait=True):
 145                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 146                     self.assert_qmp(event, 'data/type', 'stream')
 147                     self.assert_qmp(event, 'data/device', 'drive0')
 148                     self.assert_qmp(event, 'data/offset', self.image_len)
 149                     self.assert_qmp(event, 'data/len', self.image_len)
 150                     completed = True
 151
 152         self.assert_no_active_streams()
 153
 154     def test_set_speed(self):
 155         self.assert_no_active_streams()
 156
 157         result = self.vm.qmp('block-stream', device='drive0')
 158         self.assert_qmp(result, 'return', {})
 159
 160         # Default speed is 0
 161         result = self.vm.qmp('query-block-jobs')
 162         self.assert_qmp(result, 'return[0]/device', 'drive0')
 163         self.assert_qmp(result, 'return[0]/speed', 0)
 164
 165         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
 166         self.assert_qmp(result, 'return', {})
 167
 168         # Ensure the speed we set was accepted
 169         result = self.vm.qmp('query-block-jobs')
 170         self.assert_qmp(result, 'return[0]/device', 'drive0')
 171         self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
 172
 173         self.cancel_and_wait()
 174
 175         # Check setting speed in block-stream works
 176         result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
 177         self.assert_qmp(result, 'return', {})
 178
 179         result = self.vm.qmp('query-block-jobs')
 180         self.assert_qmp(result, 'return[0]/device', 'drive0')
 181         self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
 182
 183         self.cancel_and_wait()
 184
 185     def test_set_speed_invalid(self):
 186         self.assert_no_active_streams()
 187
 188         result = self.vm.qmp('block-stream', device='drive0', speed=-1)
 189         self.assert_qmp(result, 'error/class', 'InvalidParameter')
 190         self.assert_qmp(result, 'error/data/name', 'speed')
 191
 192         self.assert_no_active_streams()
 193
 194         result = self.vm.qmp('block-stream', device='drive0')
 195         self.assert_qmp(result, 'return', {})
 196
 197         result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
 198         self.assert_qmp(result, 'error/class', 'InvalidParameter')
 199         self.assert_qmp(result, 'error/data/name', 'speed')
 200
 201         self.cancel_and_wait()
 202
 203 if __name__ == '__main__':
 204     iotests.main(supported_fmts=['qcow2', 'qed'])