179 lines
7.0 KiB
Python
Executable File
179 lines
7.0 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Tests for image block commit.
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#
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# Copyright (C) 2012 IBM, Corp.
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# Copyright (C) 2012 Red Hat, Inc.
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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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# Test for live block commit
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# Derived from Image Streaming Test 030
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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 ImageCommitTestCase(iotests.QMPTestCase):
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'''Abstract base class for image commit test cases'''
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def assert_no_active_commit(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', 'commit')
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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_commit()
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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(ImageCommitTestCase):
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image_len = 1 * 1024 * 1024
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test_len = 1 * 1024 * 256
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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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qemu_io('-c', 'write -P 0xab 0 524288', backing_img)
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qemu_io('-c', 'write -P 0xef 524288 524288', mid_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_commit(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top='%s' % 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', 'commit')
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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_commit()
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self.vm.shutdown()
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self.assertEqual(-1, qemu_io('-c', 'read -P 0xab 0 524288', backing_img).find("verification failed"))
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self.assertEqual(-1, qemu_io('-c', 'read -P 0xef 524288 524288', backing_img).find("verification failed"))
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def test_device_not_found(self):
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result = self.vm.qmp('block-commit', device='nonexistent', top='%s' % mid_img)
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self.assert_qmp(result, 'error/class', 'DeviceNotFound')
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def test_top_same_base(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % backing_img)
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', 'Invalid files for merge: top and base are the same')
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def test_top_invalid(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top='badfile', base='%s' % backing_img)
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', 'Top image file badfile not found')
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def test_base_invalid(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top='%s' % mid_img, base='badfile')
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', 'Base \'badfile\' not found')
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def test_top_is_active(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top='%s' % test_img, base='%s' % backing_img)
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', 'Top image as the active layer is currently unsupported')
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def test_top_and_base_reversed(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top='%s' % backing_img, base='%s' % mid_img)
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', 'Base (%(1)s) is not reachable from top (%(2)s)' % {"1" : mid_img, "2" : backing_img})
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def test_top_omitted(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0')
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self.assert_qmp(result, 'error/class', 'GenericError')
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self.assert_qmp(result, 'error/desc', "Parameter 'top' is missing")
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class TestSetSpeed(ImageCommitTestCase):
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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, 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_set_speed(self):
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self.assert_no_active_commit()
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result = self.vm.qmp('block-commit', device='drive0', top=mid_img, speed=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', 1024 * 1024)
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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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