103cbc771e
Most of our Python unittest-style tests only support the file protocol. You can run them with any other protocol, but the test will simply ignore your choice and use file anyway. We should let them signal that they require the file protocol so they are skipped when you want to test some other protocol. Signed-off-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
232 lines
8.3 KiB
Python
Executable file
232 lines
8.3 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# Tests for dirty bitmaps migration.
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#
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# Copyright (c) 2016-2017 Virtuozzo International GmbH. All rights reserved.
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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 os
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import iotests
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import time
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import itertools
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import operator
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import re
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from iotests import qemu_img
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disk_a = os.path.join(iotests.test_dir, 'disk_a')
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disk_b = os.path.join(iotests.test_dir, 'disk_b')
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size = '1M'
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mig_file = os.path.join(iotests.test_dir, 'mig_file')
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mig_cmd = 'exec: cat > ' + mig_file
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incoming_cmd = 'exec: cat ' + mig_file
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class TestDirtyBitmapMigration(iotests.QMPTestCase):
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def tearDown(self):
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self.vm_a.shutdown()
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self.vm_b.shutdown()
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os.remove(disk_a)
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os.remove(disk_b)
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os.remove(mig_file)
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def setUp(self):
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qemu_img('create', '-f', iotests.imgfmt, disk_a, size)
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qemu_img('create', '-f', iotests.imgfmt, disk_b, size)
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self.vm_a = iotests.VM(path_suffix='a').add_drive(disk_a)
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self.vm_a.launch()
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self.vm_b = iotests.VM(path_suffix='b')
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def add_bitmap(self, vm, granularity, persistent):
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params = {'node': 'drive0',
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'name': 'bitmap0',
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'granularity': granularity}
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if persistent:
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params['persistent'] = True
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result = vm.qmp('block-dirty-bitmap-add', **params)
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self.assert_qmp(result, 'return', {});
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def get_bitmap_hash(self, vm):
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result = vm.qmp('x-debug-block-dirty-bitmap-sha256',
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node='drive0', name='bitmap0')
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return result['return']['sha256']
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def check_bitmap(self, vm, sha256):
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result = vm.qmp('x-debug-block-dirty-bitmap-sha256',
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node='drive0', name='bitmap0')
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if sha256:
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self.assert_qmp(result, 'return/sha256', sha256);
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else:
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self.assert_qmp(result, 'error/desc',
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"Dirty bitmap 'bitmap0' not found");
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def do_test_migration_resume_source(self, persistent, migrate_bitmaps):
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granularity = 512
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# regions = ((start, count), ...)
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regions = ((0, 0x10000),
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(0xf0000, 0x10000),
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(0xa0201, 0x1000))
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mig_caps = [{'capability': 'events', 'state': True}]
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if migrate_bitmaps:
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mig_caps.append({'capability': 'dirty-bitmaps', 'state': True})
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result = self.vm_a.qmp('migrate-set-capabilities',
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capabilities=mig_caps)
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self.assert_qmp(result, 'return', {})
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self.add_bitmap(self.vm_a, granularity, persistent)
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for r in regions:
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self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % r)
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sha256 = self.get_bitmap_hash(self.vm_a)
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result = self.vm_a.qmp('migrate', uri=mig_cmd)
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while True:
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event = self.vm_a.event_wait('MIGRATION')
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if event['data']['status'] == 'completed':
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break
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while True:
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result = self.vm_a.qmp('query-status')
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if (result['return']['status'] == 'postmigrate'):
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break
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# test that bitmap is still here
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removed = (not migrate_bitmaps) and persistent
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self.check_bitmap(self.vm_a, False if removed else sha256)
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result = self.vm_a.qmp('cont')
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self.assert_qmp(result, 'return', {})
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# test that bitmap is still here after invalidation
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self.check_bitmap(self.vm_a, sha256)
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# shutdown and check that invalidation didn't fail
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self.vm_a.shutdown()
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# catch 'Could not reopen qcow2 layer: Bitmap already exists'
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# possible error
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log = self.vm_a.get_log()
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log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log)
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log = re.sub(r'^(wrote .* bytes at offset .*\n.*KiB.*ops.*sec.*\n){3}',
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'', log)
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log = re.sub(r'\[I \+\d+\.\d+\] CLOSED\n?$', '', log)
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self.assertEqual(log, '')
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# test that bitmap is still persistent
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self.vm_a.launch()
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self.check_bitmap(self.vm_a, sha256 if persistent else False)
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def do_test_migration(self, persistent, migrate_bitmaps, online,
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shared_storage):
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granularity = 512
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# regions = ((start, count), ...)
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regions = ((0, 0x10000),
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(0xf0000, 0x10000),
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(0xa0201, 0x1000))
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should_migrate = migrate_bitmaps or persistent and shared_storage
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mig_caps = [{'capability': 'events', 'state': True}]
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if migrate_bitmaps:
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mig_caps.append({'capability': 'dirty-bitmaps', 'state': True})
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result = self.vm_a.qmp('migrate-set-capabilities',
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capabilities=mig_caps)
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self.assert_qmp(result, 'return', {})
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self.vm_b.add_incoming(incoming_cmd if online else "defer")
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self.vm_b.add_drive(disk_a if shared_storage else disk_b)
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if online:
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os.mkfifo(mig_file)
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self.vm_b.launch()
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result = self.vm_b.qmp('migrate-set-capabilities',
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capabilities=mig_caps)
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self.assert_qmp(result, 'return', {})
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self.add_bitmap(self.vm_a, granularity, persistent)
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for r in regions:
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self.vm_a.hmp_qemu_io('drive0', 'write %d %d' % r)
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sha256 = self.get_bitmap_hash(self.vm_a)
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result = self.vm_a.qmp('migrate', uri=mig_cmd)
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while True:
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event = self.vm_a.event_wait('MIGRATION')
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if event['data']['status'] == 'completed':
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break
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if not online:
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self.vm_a.shutdown()
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self.vm_b.launch()
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result = self.vm_b.qmp('migrate-set-capabilities',
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capabilities=mig_caps)
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self.assert_qmp(result, 'return', {})
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result = self.vm_b.qmp('migrate-incoming', uri=incoming_cmd)
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self.assert_qmp(result, 'return', {})
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while True:
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event = self.vm_b.event_wait('MIGRATION')
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if event['data']['status'] == 'completed':
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break
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self.check_bitmap(self.vm_b, sha256 if should_migrate else False)
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if should_migrate:
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self.vm_b.shutdown()
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# catch 'Could not reopen qcow2 layer: Bitmap already exists'
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# possible error
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log = self.vm_b.get_log()
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log = re.sub(r'^\[I \d+\.\d+\] OPENED\n', '', log)
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log = re.sub(r'\[I \+\d+\.\d+\] CLOSED\n?$', '', log)
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self.assertEqual(log, '')
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# recreate vm_b, as we don't want -incoming option (this will lead
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# to "cat" process left alive after test finish)
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self.vm_b = iotests.VM(path_suffix='b')
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self.vm_b.add_drive(disk_a if shared_storage else disk_b)
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self.vm_b.launch()
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self.check_bitmap(self.vm_b, sha256 if persistent else False)
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def inject_test_case(klass, name, method, *args, **kwargs):
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mc = operator.methodcaller(method, *args, **kwargs)
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setattr(klass, 'test_' + method + name, lambda self: mc(self))
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for cmb in list(itertools.product((True, False), repeat=4)):
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name = ('_' if cmb[0] else '_not_') + 'persistent_'
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name += ('_' if cmb[1] else '_not_') + 'migbitmap_'
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name += '_online' if cmb[2] else '_offline'
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name += '_shared' if cmb[3] else '_nonshared'
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inject_test_case(TestDirtyBitmapMigration, name, 'do_test_migration',
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*list(cmb))
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for cmb in list(itertools.product((True, False), repeat=2)):
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name = ('_' if cmb[0] else '_not_') + 'persistent_'
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name += ('_' if cmb[1] else '_not_') + 'migbitmap'
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inject_test_case(TestDirtyBitmapMigration, name,
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'do_test_migration_resume_source', *list(cmb))
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if __name__ == '__main__':
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iotests.main(supported_fmts=['qcow2'],
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supported_protocols=['file'])
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