0c81734765
These check that a paused streaming job does not advance its offset. Sometimes the new test fails; the map is different between the source and the destination of the streaming because qemu-io does not always pack adjacent clusters that have the same allocated/unallocated state. However, this also happens with the existing test_stream testcase, and is better fixed in qemu-io. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
311 lines
11 KiB
Python
Executable File
311 lines
11 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Tests for image streaming.
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#
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# Copyright (C) 2012 IBM Corp.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import time
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import os
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import iotests
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from iotests import qemu_img, qemu_io
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import struct
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backing_img = os.path.join(iotests.test_dir, 'backing.img')
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mid_img = os.path.join(iotests.test_dir, 'mid.img')
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test_img = os.path.join(iotests.test_dir, 'test.img')
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class ImageStreamingTestCase(iotests.QMPTestCase):
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'''Abstract base class for image streaming test cases'''
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def assert_no_active_streams(self):
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result = self.vm.qmp('query-block-jobs')
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self.assert_qmp(result, 'return', [])
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def cancel_and_wait(self, drive='drive0'):
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'''Cancel a block job and wait for it to finish'''
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result = self.vm.qmp('block-job-cancel', device=drive)
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self.assert_qmp(result, 'return', {})
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cancelled = False
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while not cancelled:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_CANCELLED':
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self.assert_qmp(event, 'data/type', 'stream')
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self.assert_qmp(event, 'data/device', drive)
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cancelled = True
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self.assert_no_active_streams()
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def create_image(self, name, size):
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file = open(name, 'w')
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i = 0
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while i < size:
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sector = struct.pack('>l504xl', i / 512, i / 512)
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file.write(sector)
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i = i + 512
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file.close()
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class TestSingleDrive(ImageStreamingTestCase):
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image_len = 1 * 1024 * 1024 # MB
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def setUp(self):
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self.create_image(backing_img, TestSingleDrive.image_len)
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qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, mid_img)
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qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % mid_img, test_img)
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self.vm = iotests.VM().add_drive(test_img)
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self.vm.launch()
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def tearDown(self):
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self.vm.shutdown()
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os.remove(test_img)
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os.remove(mid_img)
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os.remove(backing_img)
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def test_stream(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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completed = False
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while not completed:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_COMPLETED':
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self.assert_qmp(event, 'data/type', 'stream')
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self.assert_qmp(event, 'data/device', 'drive0')
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self.assert_qmp(event, 'data/offset', self.image_len)
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self.assert_qmp(event, 'data/len', self.image_len)
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completed = True
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self.assert_no_active_streams()
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self.vm.shutdown()
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self.assertEqual(qemu_io('-c', 'map', backing_img),
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qemu_io('-c', 'map', test_img),
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'image file map does not match backing file after streaming')
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def test_stream_pause(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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result = self.vm.qmp('block-job-pause', device='drive0')
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self.assert_qmp(result, 'return', {})
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time.sleep(1)
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result = self.vm.qmp('query-block-jobs')
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offset = self.dictpath(result, 'return[0]/offset')
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time.sleep(1)
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result = self.vm.qmp('query-block-jobs')
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self.assert_qmp(result, 'return[0]/offset', offset)
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result = self.vm.qmp('block-job-resume', device='drive0')
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self.assert_qmp(result, 'return', {})
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completed = False
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while not completed:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_COMPLETED':
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self.assert_qmp(event, 'data/type', 'stream')
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self.assert_qmp(event, 'data/device', 'drive0')
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self.assert_qmp(event, 'data/offset', self.image_len)
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self.assert_qmp(event, 'data/len', self.image_len)
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completed = True
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self.assert_no_active_streams()
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self.vm.shutdown()
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self.assertEqual(qemu_io('-c', 'map', backing_img),
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qemu_io('-c', 'map', test_img),
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'image file map does not match backing file after streaming')
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def test_stream_partial(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0', base=mid_img)
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self.assert_qmp(result, 'return', {})
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completed = False
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while not completed:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_COMPLETED':
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self.assert_qmp(event, 'data/type', 'stream')
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self.assert_qmp(event, 'data/device', 'drive0')
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self.assert_qmp(event, 'data/offset', self.image_len)
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self.assert_qmp(event, 'data/len', self.image_len)
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completed = True
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self.assert_no_active_streams()
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self.vm.shutdown()
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self.assertEqual(qemu_io('-c', 'map', mid_img),
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qemu_io('-c', 'map', test_img),
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'image file map does not match backing file after streaming')
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def test_device_not_found(self):
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result = self.vm.qmp('block-stream', device='nonexistent')
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self.assert_qmp(result, 'error/class', 'DeviceNotFound')
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class TestSmallerBackingFile(ImageStreamingTestCase):
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backing_len = 1 * 1024 * 1024 # MB
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image_len = 2 * backing_len
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def setUp(self):
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self.create_image(backing_img, self.backing_len)
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qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img, str(self.image_len))
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self.vm = iotests.VM().add_drive(test_img)
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self.vm.launch()
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# If this hangs, then you are missing a fix to complete streaming when the
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# end of the backing file is reached.
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def test_stream(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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completed = False
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while not completed:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_COMPLETED':
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self.assert_qmp(event, 'data/type', 'stream')
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self.assert_qmp(event, 'data/device', 'drive0')
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self.assert_qmp(event, 'data/offset', self.image_len)
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self.assert_qmp(event, 'data/len', self.image_len)
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completed = True
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self.assert_no_active_streams()
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self.vm.shutdown()
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class TestStreamStop(ImageStreamingTestCase):
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image_len = 8 * 1024 * 1024 * 1024 # GB
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def setUp(self):
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qemu_img('create', backing_img, str(TestStreamStop.image_len))
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qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
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self.vm = iotests.VM().add_drive(test_img)
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self.vm.launch()
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def tearDown(self):
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self.vm.shutdown()
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os.remove(test_img)
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os.remove(backing_img)
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def test_stream_stop(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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time.sleep(0.1)
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events = self.vm.get_qmp_events(wait=False)
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self.assertEqual(events, [], 'unexpected QMP event: %s' % events)
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self.cancel_and_wait()
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class TestSetSpeed(ImageStreamingTestCase):
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image_len = 80 * 1024 * 1024 # MB
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def setUp(self):
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qemu_img('create', backing_img, str(TestSetSpeed.image_len))
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qemu_img('create', '-f', iotests.imgfmt, '-o', 'backing_file=%s' % backing_img, test_img)
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self.vm = iotests.VM().add_drive(test_img)
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self.vm.launch()
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def tearDown(self):
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self.vm.shutdown()
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os.remove(test_img)
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os.remove(backing_img)
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# This is a short performance test which is not run by default.
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# Invoke "IMGFMT=qed ./030 TestSetSpeed.perf_test_throughput"
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def perf_test_throughput(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
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self.assert_qmp(result, 'return', {})
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completed = False
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while not completed:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_COMPLETED':
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self.assert_qmp(event, 'data/type', 'stream')
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self.assert_qmp(event, 'data/device', 'drive0')
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self.assert_qmp(event, 'data/offset', self.image_len)
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self.assert_qmp(event, 'data/len', self.image_len)
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completed = True
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self.assert_no_active_streams()
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def test_set_speed(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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# Default speed is 0
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result = self.vm.qmp('query-block-jobs')
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self.assert_qmp(result, 'return[0]/device', 'drive0')
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self.assert_qmp(result, 'return[0]/speed', 0)
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result = self.vm.qmp('block-job-set-speed', device='drive0', speed=8 * 1024 * 1024)
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self.assert_qmp(result, 'return', {})
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# Ensure the speed we set was accepted
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result = self.vm.qmp('query-block-jobs')
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self.assert_qmp(result, 'return[0]/device', 'drive0')
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self.assert_qmp(result, 'return[0]/speed', 8 * 1024 * 1024)
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self.cancel_and_wait()
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# Check setting speed in block-stream works
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result = self.vm.qmp('block-stream', device='drive0', speed=4 * 1024 * 1024)
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self.assert_qmp(result, 'return', {})
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result = self.vm.qmp('query-block-jobs')
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self.assert_qmp(result, 'return[0]/device', 'drive0')
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self.assert_qmp(result, 'return[0]/speed', 4 * 1024 * 1024)
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self.cancel_and_wait()
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def test_set_speed_invalid(self):
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0', speed=-1)
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_no_active_streams()
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result = self.vm.qmp('block-stream', device='drive0')
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self.assert_qmp(result, 'return', {})
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result = self.vm.qmp('block-job-set-speed', device='drive0', speed=-1)
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.cancel_and_wait()
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if __name__ == '__main__':
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iotests.main(supported_fmts=['qcow2', 'qed'])
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