3 # Tests for dirty bitmaps postcopy migration.
5 # Copyright (c) 2016-2017 Virtuozzo International GmbH. All rights reserved.
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.
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.
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/>.
24 from iotests import qemu_img
26 disk_a = os.path.join(iotests.test_dir, 'disk_a')
27 disk_b = os.path.join(iotests.test_dir, 'disk_b')
29 fifo = os.path.join(iotests.test_dir, 'mig_fifo')
31 class TestDirtyBitmapPostcopyMigration(iotests.QMPTestCase):
42 qemu_img('create', '-f', iotests.imgfmt, disk_a, size)
43 qemu_img('create', '-f', iotests.imgfmt, disk_b, size)
44 self.vm_a = iotests.VM(path_suffix='a').add_drive(disk_a)
45 self.vm_b = iotests.VM(path_suffix='b').add_drive(disk_b)
46 self.vm_b.add_incoming("exec: cat '" + fifo + "'")
50 def test_postcopy(self):
51 write_size = 0x40000000
55 result = self.vm_a.qmp('block-dirty-bitmap-add', node='drive0',
56 name='bitmap', granularity=granularity)
57 self.assert_qmp(result, 'return', {});
61 self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
65 self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
68 result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256',
69 node='drive0', name='bitmap')
70 sha256 = result['return']['sha256']
72 result = self.vm_a.qmp('block-dirty-bitmap-clear', node='drive0',
74 self.assert_qmp(result, 'return', {});
77 self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
80 bitmaps_cap = {'capability': 'dirty-bitmaps', 'state': True}
81 events_cap = {'capability': 'events', 'state': True}
83 result = self.vm_a.qmp('migrate-set-capabilities',
84 capabilities=[bitmaps_cap, events_cap])
85 self.assert_qmp(result, 'return', {})
87 result = self.vm_b.qmp('migrate-set-capabilities',
88 capabilities=[bitmaps_cap])
89 self.assert_qmp(result, 'return', {})
91 result = self.vm_a.qmp('migrate', uri='exec:cat>' + fifo)
92 self.assert_qmp(result, 'return', {})
94 result = self.vm_a.qmp('migrate-start-postcopy')
95 self.assert_qmp(result, 'return', {})
98 event = self.vm_a.event_wait('MIGRATION')
99 if event['data']['status'] == 'completed':
103 while s < write_size:
104 self.vm_b.hmp_qemu_io('drive0', 'write %d %d' % (s, chunk))
107 result = self.vm_b.qmp('query-block');
108 while len(result['return'][0]['dirty-bitmaps']) > 1:
110 result = self.vm_b.qmp('query-block');
112 result = self.vm_b.qmp('x-debug-block-dirty-bitmap-sha256',
113 node='drive0', name='bitmap')
115 self.assert_qmp(result, 'return/sha256', sha256);
117 if __name__ == '__main__':
118 iotests.main(supported_fmts=['qcow2'], supported_cache_modes=['none'],
119 supported_protocols=['file'])