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It is possible, that shutdown on target occurs earlier than migration finish. In this case we crash in bdrv_release_dirty_bitmap_locked() on assertion "assert(!bdrv_dirty_bitmap_busy(bitmap));" as we do have busy bitmap, as bitmap migration is ongoing. We'll fix bitmap migration to gracefully cancel on early shutdown soon. Now let's fix iotest 194 to wait migration completion before shutdown. Note that in this test dest_vm.shutdown() is called implicitly, as vms used as context-providers, see __exit__() method of QEMUMachine class. Actually, not waiting migration finish is a wrong thing, but the test started to crash after commitae00aa2398"iotests: 194: test also migration of dirty bitmap", which added dirty bitmaps here. So, Fixes: tag won't hurt. Fixes:ae00aa2398Reported-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> Tested-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [eblake: grammar tweak] Message-Id: <20200604083341.26978-1-vsementsov@virtuozzo.com> Signed-off-by: Eric Blake <eblake@redhat.com>
101 lines
4.2 KiB
Python
Executable File
101 lines
4.2 KiB
Python
Executable File
#!/usr/bin/env python3
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#
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# Copyright (C) 2017 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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# Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com>
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#
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# Non-shared storage migration test using NBD server and drive-mirror
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import iotests
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iotests.script_initialize(supported_fmts=['qcow2', 'qed', 'raw'],
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supported_platforms=['linux'])
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with iotests.FilePath('source.img') as source_img_path, \
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iotests.FilePath('dest.img') as dest_img_path, \
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iotests.FilePaths(['migration.sock', 'nbd.sock'], iotests.sock_dir) as \
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[migration_sock_path, nbd_sock_path], \
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iotests.VM('source') as source_vm, \
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iotests.VM('dest') as dest_vm:
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img_size = '1G'
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iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, source_img_path, img_size)
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iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, dest_img_path, img_size)
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iotests.log('Launching VMs...')
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(source_vm.add_drive(source_img_path)
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.launch())
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(dest_vm.add_drive(dest_img_path)
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.add_incoming('unix:{0}'.format(migration_sock_path))
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.launch())
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source_vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0')
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iotests.log('Launching NBD server on destination...')
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iotests.log(dest_vm.qmp('nbd-server-start', addr={'type': 'unix', 'data': {'path': nbd_sock_path}}))
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iotests.log(dest_vm.qmp('nbd-server-add', device='drive0', writable=True))
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iotests.log('Starting `drive-mirror` on source...')
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iotests.log(source_vm.qmp(
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'drive-mirror',
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device='drive0',
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target='nbd+unix:///drive0?socket={0}'.format(nbd_sock_path),
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sync='full',
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format='raw', # always raw, the server handles the format
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mode='existing',
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job_id='mirror-job0'))
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iotests.log('Waiting for `drive-mirror` to complete...')
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iotests.log(source_vm.event_wait('BLOCK_JOB_READY'),
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filters=[iotests.filter_qmp_event])
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iotests.log('Starting migration...')
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capabilities = [{'capability': 'events', 'state': True},
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{'capability': 'dirty-bitmaps', 'state': True}]
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source_vm.qmp('migrate-set-capabilities', capabilities=capabilities)
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dest_vm.qmp('migrate-set-capabilities', capabilities=capabilities)
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iotests.log(source_vm.qmp('migrate', uri='unix:{0}'.format(migration_sock_path)))
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source_vm.qmp_log('migrate-start-postcopy')
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while True:
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event1 = source_vm.event_wait('MIGRATION')
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iotests.log(event1, filters=[iotests.filter_qmp_event])
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if event1['data']['status'] in ('completed', 'failed'):
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iotests.log('Gracefully ending the `drive-mirror` job on source...')
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iotests.log(source_vm.qmp('block-job-cancel', device='mirror-job0'))
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break
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while True:
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event2 = source_vm.event_wait('BLOCK_JOB_COMPLETED')
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iotests.log(event2, filters=[iotests.filter_qmp_event])
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if event2['event'] == 'BLOCK_JOB_COMPLETED':
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iotests.log('Stopping the NBD server on destination...')
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iotests.log(dest_vm.qmp('nbd-server-stop'))
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break
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iotests.log('Wait for migration completion on target...')
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migr_events = (('MIGRATION', {'data': {'status': 'completed'}}),
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('MIGRATION', {'data': {'status': 'failed'}}))
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event = dest_vm.events_wait(migr_events)
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iotests.log(event, filters=[iotests.filter_qmp_event])
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iotests.log('Check bitmaps on source:')
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iotests.log(source_vm.qmp('query-block')['return'][0]['dirty-bitmaps'])
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iotests.log('Check bitmaps on target:')
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iotests.log(dest_vm.qmp('query-block')['return'][0]['dirty-bitmaps'])
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