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 class TestSingleDrive(ImageStreamingTestCase):
  36     image_len = 1 * 1024 * 1024 # MB
  37
  38     def setUp(self):
  39         qemu_img('create', backing_img, str(TestSingleDrive.image_len))
  40         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  41         self.vm = iotests.VM().add_drive(test_img)
  42         self.vm.launch()
  43
  44     def tearDown(self):
  45         self.vm.shutdown()
  46         os.remove(test_img)
  47         os.remove(backing_img)
  48
  49     def test_stream(self):
  50         self.assert_no_active_streams()
  51
  52         result = self.vm.qmp('block_stream', device='drive0')
  53         self.assert_qmp(result, 'return', {})
  54
  55         completed = False
  56         while not completed:
  57             for event in self.vm.get_qmp_events(wait=True):
  58                 if event['event'] == 'BLOCK_JOB_COMPLETED':
  59                     self.assert_qmp(event, 'data/type', 'stream')
  60                     self.assert_qmp(event, 'data/device', 'drive0')
  61                     self.assert_qmp(event, 'data/offset', self.image_len)
  62                     self.assert_qmp(event, 'data/len', self.image_len)
  63                     completed = True
  64
  65         self.assert_no_active_streams()
  66
  67         self.assertFalse('sectors not allocated' in qemu_io('-c', 'map', test_img),
  68                          'image file not fully populated after streaming')
  69
  70     def test_device_not_found(self):
  71         result = self.vm.qmp('block_stream', device='nonexistent')
  72         self.assert_qmp(result, 'error/class', 'DeviceNotFound')
  73
  74 class TestStreamStop(ImageStreamingTestCase):
  75     image_len = 8 * 1024 * 1024 * 1024 # GB
  76
  77     def setUp(self):
  78         qemu_img('create', backing_img, str(TestStreamStop.image_len))
  79         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
  80         self.vm = iotests.VM().add_drive(test_img)
  81         self.vm.launch()
  82
  83     def tearDown(self):
  84         self.vm.shutdown()
  85         os.remove(test_img)
  86         os.remove(backing_img)
  87
  88     def test_stream_stop(self):
  89         import time
  90
  91         self.assert_no_active_streams()
  92
  93         result = self.vm.qmp('block_stream', device='drive0')
  94         self.assert_qmp(result, 'return', {})
  95
  96         time.sleep(1)
  97         events = self.vm.get_qmp_events(wait=False)
  98         self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
  99
 100         self.vm.qmp('block_job_cancel', device='drive0')
 101         self.assert_qmp(result, 'return', {})
 102
 103         cancelled = False
 104         while not cancelled:
 105             for event in self.vm.get_qmp_events(wait=True):
 106                 if event['event'] == 'BLOCK_JOB_CANCELLED':
 107                     self.assert_qmp(event, 'data/type', 'stream')
 108                     self.assert_qmp(event, 'data/device', 'drive0')
 109                     cancelled = True
 110
 111         self.assert_no_active_streams()
 112
 113 # This is a short performance test which is not run by default.
 114 # Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_set_speed"
 115 class TestSetSpeed(ImageStreamingTestCase):
 116     image_len = 80 * 1024 * 1024 # MB
 117
 118     def setUp(self):
 119         qemu_img('create', backing_img, str(TestSetSpeed.image_len))
 120         qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
 121         self.vm = iotests.VM().add_drive(test_img)
 122         self.vm.launch()
 123
 124     def tearDown(self):
 125         self.vm.shutdown()
 126         os.remove(test_img)
 127         os.remove(backing_img)
 128
 129     def perf_test_set_speed(self):
 130         self.assert_no_active_streams()
 131
 132         result = self.vm.qmp('block_stream', device='drive0')
 133         self.assert_qmp(result, 'return', {})
 134
 135         result = self.vm.qmp('block_job_set_speed', device='drive0', value=8 * 1024 * 1024)
 136         self.assert_qmp(result, 'return', {})
 137
 138         completed = False
 139         while not completed:
 140             for event in self.vm.get_qmp_events(wait=True):
 141                 if event['event'] == 'BLOCK_JOB_COMPLETED':
 142                     self.assert_qmp(event, 'data/type', 'stream')
 143                     self.assert_qmp(event, 'data/device', 'drive0')
 144                     self.assert_qmp(event, 'data/offset', self.image_len)
 145                     self.assert_qmp(event, 'data/len', self.image_len)
 146                     completed = True
 147
 148         self.assert_no_active_streams()
 149
 150 if __name__ == '__main__':
 151     iotests.main(supported_fmts=['qcow2', 'qed'])