Signed-off-by: Max Reitz <mre...@redhat.com> --- tests/qemu-iotests/300 | 487 +++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/300.out | 5 + tests/qemu-iotests/group | 1 + 3 files changed, 493 insertions(+) create mode 100755 tests/qemu-iotests/300 create mode 100644 tests/qemu-iotests/300.out
diff --git a/tests/qemu-iotests/300 b/tests/qemu-iotests/300 new file mode 100755 index 0000000000..621a60e179 --- /dev/null +++ b/tests/qemu-iotests/300 @@ -0,0 +1,487 @@ +#!/usr/bin/env python3 +# +# Tests for dirty bitmaps migration with node aliases +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see <http://www.gnu.org/licenses/>. +# + +import os +import random +from typing import Dict, List, Union +import iotests + +assert iotests.sock_dir is not None +mig_sock = os.path.join(iotests.sock_dir, 'mig_sock') + +class TestDirtyBitmapMigration(iotests.QMPTestCase): + src_node_name: str = '' + dst_node_name: str = '' + src_bmap_name: str = '' + dst_bmap_name: str = '' + + def setUp(self) -> None: + self.vm_a = iotests.VM(path_suffix='-a') + self.vm_a.add_blockdev(f'node-name={self.src_node_name},' \ + 'driver=null-co') + self.vm_a.launch() + + self.vm_b = iotests.VM(path_suffix='-b') + self.vm_b.add_blockdev(f'node-name={self.dst_node_name},' \ + 'driver=null-co') + self.vm_b.add_incoming(f'unix:{mig_sock}') + self.vm_b.launch() + + result = self.vm_a.qmp('block-dirty-bitmap-add', + node=self.src_node_name, + name=self.src_bmap_name) + self.assert_qmp(result, 'return', {}) + + # Dirty some random megabytes + for _ in range(9): + mb_ofs = random.randrange(1024) + self.vm_a.hmp_qemu_io(self.src_node_name, 'write %dM 1M' % mb_ofs) + + result = self.vm_a.qmp('x-debug-block-dirty-bitmap-sha256', + node=self.src_node_name, + name=self.src_bmap_name) + self.bitmap_hash_reference = result['return']['sha256'] + + caps = [{'capability': name, 'state': True} \ + for name in ('dirty-bitmaps', 'events')] + + for vm in (self.vm_a, self.vm_b): + result = vm.qmp('migrate-set-capabilities', capabilities=caps) + self.assert_qmp(result, 'return', {}) + + def tearDown(self) -> None: + self.vm_a.shutdown() + self.vm_b.shutdown() + try: + os.remove(mig_sock) + except OSError: + pass + + def check_bitmap(self, bitmap_name_valid: bool) -> None: + result = self.vm_b.qmp('x-debug-block-dirty-bitmap-sha256', + node=self.dst_node_name, + name=self.dst_bmap_name) + if bitmap_name_valid: + self.assert_qmp(result, 'return/sha256', + self.bitmap_hash_reference) + else: + self.assert_qmp(result, 'error/desc', + f"Dirty bitmap '{self.dst_bmap_name}' not found") + + def migrate(self, migration_success: bool = True, + bitmap_name_valid: bool = True) -> None: + result = self.vm_a.qmp('migrate', uri=f'unix:{mig_sock}') + self.assert_qmp(result, 'return', {}) + + status = None + while status not in ('completed', 'failed'): + status = self.vm_a.event_wait('MIGRATION')['data']['status'] + + self.assertEqual(status == 'completed', migration_success) + if status == 'failed': + # Wait until the migration has been cleaned up + # (Otherwise, bdrv_close_all() will abort because the + # dirty bitmap migration code still holds a reference to + # the BDS) + # (Unfortunately, there does not appear to be a nicer way + # of waiting until a failed migration has been cleaned up) + timeout_msg = 'Timeout waiting for migration to be cleaned up' + with iotests.Timeout(30, timeout_msg): + while os.path.exists(mig_sock): + pass + + # Dropping src_node_name will only work once the + # bitmap migration code has released it + while 'error' in self.vm_a.qmp('blockdev-del', + node_name=self.src_node_name): + pass + + return + + self.vm_a.wait_for_runstate('postmigrate') + self.vm_b.wait_for_runstate('running') + + self.check_bitmap(bitmap_name_valid) + + @staticmethod + def mapping(node_name: str, node_alias: str, + bitmap_name: str, bitmap_alias: str) \ + -> List[Dict[str, Union[str, List[Dict[str, str]]]]]: + return [{ + 'node-name': node_name, + 'alias': node_alias, + 'bitmaps': [{ + 'name': bitmap_name, + 'alias': bitmap_alias + }] + }] + + +class TestAliasMigration(TestDirtyBitmapMigration): + src_node_name = 'node0' + dst_node_name = 'node0' + src_bmap_name = 'bmap0' + dst_bmap_name = 'bmap0' + + def test_migration_without_alias(self) -> None: + self.migrate(self.src_node_name == self.dst_node_name, + self.src_bmap_name == self.dst_bmap_name) + + def test_alias_on_src_migration(self) -> None: + mapping = self.mapping(self.src_node_name, self.dst_node_name, + self.src_bmap_name, self.dst_bmap_name) + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'return', {}) + + self.migrate() + + def test_alias_on_dst_migration(self) -> None: + mapping = self.mapping(self.dst_node_name, self.src_node_name, + self.dst_bmap_name, self.src_bmap_name) + + result = self.vm_b.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'return', {}) + + self.migrate() + + def test_alias_on_both_migration(self) -> None: + src_map = self.mapping(self.src_node_name, 'node-alias', + self.src_bmap_name, 'bmap-alias') + + dst_map = self.mapping(self.dst_node_name, 'node-alias', + self.dst_bmap_name, 'bmap-alias') + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=src_map) + self.assert_qmp(result, 'return', {}) + + result = self.vm_b.qmp('migrate-set-parameters', + block_bitmap_mapping=dst_map) + self.assert_qmp(result, 'return', {}) + + self.migrate() + + +class TestNodeAliasMigration(TestAliasMigration): + src_node_name = 'node-src' + dst_node_name = 'node-dst' + + +class TestBitmapAliasMigration(TestAliasMigration): + src_bmap_name = 'bmap-src' + dst_bmap_name = 'bmap-dst' + + +class TestFullAliasMigration(TestAliasMigration): + src_node_name = 'node-src' + dst_node_name = 'node-dst' + src_bmap_name = 'bmap-src' + dst_bmap_name = 'bmap-dst' + + +class TestBlockBitmapMappingErrors(TestDirtyBitmapMigration): + src_node_name = 'node0' + dst_node_name = 'node0' + src_bmap_name = 'bmap0' + dst_bmap_name = 'bmap0' + + """ + Note that mapping nodes or bitmaps that do not exist is not an error. + """ + + def test_non_injective_node_mapping(self) -> None: + mapping = [ + { + 'node-name': 'node0', + 'alias': 'common-alias', + 'bitmaps': [{ + 'name': 'bmap0', + 'alias': 'bmap-alias0' + }] + }, + { + 'node-name': 'node1', + 'alias': 'common-alias', + 'bitmaps': [{ + 'name': 'bmap1', + 'alias': 'bmap-alias1' + }] + } + ] + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'error/desc', + 'Invalid mapping given for block-bitmap-mapping: ' \ + 'The node alias common-alias is used twice') + + def test_non_injective_bitmap_mapping(self) -> None: + mapping = [{ + 'node-name': 'node0', + 'alias': 'node-alias0', + 'bitmaps': [ + { + 'name': 'bmap0', + 'alias': 'common-alias' + }, + { + 'name': 'bmap1', + 'alias': 'common-alias' + } + ] + }] + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'error/desc', + 'Invalid mapping given for block-bitmap-mapping: ' \ + 'The bitmap alias node-alias0/common-alias is used ' \ + 'twice') + + def test_ambiguous_node_mapping(self) -> None: + mapping = [ + { + 'node-name': 'node0', + 'alias': 'node-alias0', + 'bitmaps': [{ + 'name': 'bmap0', + 'alias': 'bmap-alias0' + }] + }, + { + 'node-name': 'node0', + 'alias': 'node-alias1', + 'bitmaps': [{ + 'name': 'bmap0', + 'alias': 'bmap-alias0' + }] + } + ] + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'error/desc', + 'Invalid mapping given for block-bitmap-mapping: ' \ + 'The node name node0 is mapped twice') + + def test_ambiguous_bitmap_mapping(self) -> None: + mapping = [{ + 'node-name': 'node0', + 'alias': 'node-alias0', + 'bitmaps': [ + { + 'name': 'bmap0', + 'alias': 'bmap-alias0' + }, + { + 'name': 'bmap0', + 'alias': 'bmap-alias1' + } + ] + }] + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'error/desc', + 'Invalid mapping given for block-bitmap-mapping: ' \ + 'The bitmap node0/bmap0 is mapped twice') + + def test_migratee_node_is_not_mapped_on_src(self) -> None: + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=[]) + self.assert_qmp(result, 'return', {}) + + self.migrate(False, False) + + self.vm_a.shutdown() + self.assertIn(f"Bitmap '{self.src_bmap_name}' on node " \ + f"'{self.src_node_name}' with no alias cannot be " \ + "migrated", + self.vm_a.get_log()) + + def test_migratee_node_is_not_mapped_on_dst(self) -> None: + result = self.vm_b.qmp('migrate-set-parameters', + block_bitmap_mapping=[]) + self.assert_qmp(result, 'return', {}) + + self.migrate(False, False) + + self.vm_b.shutdown() + self.assertIn(f"Unknown node alias '{self.src_node_name}'", + self.vm_b.get_log()) + + def test_migratee_bitmap_is_not_mapped_on_src(self) -> None: + mapping = [{ + 'node-name': self.src_node_name, + 'alias': self.dst_node_name, + 'bitmaps': [] + }] + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'return', {}) + + self.migrate(False, False) + + self.vm_a.shutdown() + self.assertIn(f"Bitmap '{self.src_bmap_name}' with no alias on node " \ + f"'{self.src_node_name}' cannot be migrated", + self.vm_a.get_log()) + + def test_migratee_bitmap_is_not_mapped_on_dst(self) -> None: + mapping = [{ + 'node-name': self.dst_node_name, + 'alias': self.src_node_name, + 'bitmaps': [] + }] + + result = self.vm_b.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'return', {}) + + self.migrate(False, False) + + self.vm_b.shutdown() + self.assertIn(f"Unknown bitmap alias '{self.src_bmap_name}' on node " \ + f"'{self.dst_node_name}' (alias '{self.src_node_name}')", + self.vm_b.get_log()) + + def test_non_wellformed_node_alias(self) -> None: + mapping = [{ + 'node-name': self.src_bmap_name, + 'alias': '123-foo', + 'bitmaps': [] + }] + + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=mapping) + self.assert_qmp(result, 'error/desc', + 'Invalid mapping given for block-bitmap-mapping: ' \ + 'The node alias 123-foo is not well-formed') + + +class TestCrossAliasMigration(TestDirtyBitmapMigration): + """ + Swap aliases, both to see that qemu does not get confused, and + that we can migrate multiple things at once. + + So we migrate this: + node-a.bmap-a -> node-b.bmap-b + node-a.bmap-b -> node-b.bmap-a + node-b.bmap-a -> node-a.bmap-b + node-b.bmap-b -> node-a.bmap-a + """ + + src_node_name = 'node-a' + dst_node_name = 'node-b' + src_bmap_name = 'bmap-a' + dst_bmap_name = 'bmap-b' + + def setUp(self) -> None: + TestDirtyBitmapMigration.setUp(self) + + # Now create another block device and let both have two bitmaps each + result = self.vm_a.qmp('blockdev-add', + node_name='node-b', driver='null-co') + self.assert_qmp(result, 'return', {}) + + result = self.vm_b.qmp('blockdev-add', + node_name='node-a', driver='null-co') + self.assert_qmp(result, 'return', {}) + + bmaps_to_add = (('node-a', 'bmap-b'), + ('node-b', 'bmap-a'), + ('node-b', 'bmap-b')) + + for (node, bmap) in bmaps_to_add: + result = self.vm_a.qmp('block-dirty-bitmap-add', + node=node, name=bmap) + self.assert_qmp(result, 'return', {}) + + @staticmethod + def cross_mapping() -> List[Dict[str, Union[str, List[Dict[str, str]]]]]: + return [ + { + 'node-name': 'node-a', + 'alias': 'node-b', + 'bitmaps': [ + { + 'name': 'bmap-a', + 'alias': 'bmap-b' + }, + { + 'name': 'bmap-b', + 'alias': 'bmap-a' + } + ] + }, + { + 'node-name': 'node-b', + 'alias': 'node-a', + 'bitmaps': [ + { + 'name': 'bmap-b', + 'alias': 'bmap-a' + }, + { + 'name': 'bmap-a', + 'alias': 'bmap-b' + } + ] + } + ] + + def verify_dest_has_all_bitmaps(self) -> None: + bitmaps = self.vm_a.query_bitmaps() + + # Extract and sort bitmap names + for node in bitmaps: + bitmaps[node] = sorted((bmap['name'] for bmap in bitmaps[node])) + + self.assertEqual(bitmaps, + {'node-a': ['bmap-a', 'bmap-b'], + 'node-b': ['bmap-a', 'bmap-b']}) + + def test_alias_on_src(self) -> None: + result = self.vm_a.qmp('migrate-set-parameters', + block_bitmap_mapping=self.cross_mapping()) + self.assert_qmp(result, 'return', {}) + + # Checks that node-a.bmap-a was migrated to node-b.bmap-b, and + # that is enough + self.migrate() + + self.verify_dest_has_all_bitmaps() + + def test_alias_on_dst(self) -> None: + result = self.vm_b.qmp('migrate-set-parameters', + block_bitmap_mapping=self.cross_mapping()) + self.assert_qmp(result, 'return', {}) + + # Checks that node-a.bmap-a was migrated to node-b.bmap-b, and + # that is enough + self.migrate() + + self.verify_dest_has_all_bitmaps() + + +if __name__ == '__main__': + iotests.main(supported_protocols=['file']) diff --git a/tests/qemu-iotests/300.out b/tests/qemu-iotests/300.out new file mode 100644 index 0000000000..6d9bee1a4b --- /dev/null +++ b/tests/qemu-iotests/300.out @@ -0,0 +1,5 @@ +........................... +---------------------------------------------------------------------- +Ran 27 tests + +OK diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index d886fa0cb3..be93b513b8 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -302,3 +302,4 @@ 291 rw quick 292 rw auto quick 297 meta +300 migration -- 2.26.2
