mirror of https://gitee.com/openkylin/qemu.git
96 lines
2.7 KiB
Python
Executable File
96 lines
2.7 KiB
Python
Executable File
#!/usr/bin/env python
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#
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# Test nbd reconnect
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#
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# Copyright (c) 2019 Virtuozzo International GmbH.
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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 time
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import iotests
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from iotests import qemu_img_create, qemu_io_silent_check, file_path, \
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qemu_nbd_popen, log
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disk_a, disk_b, nbd_sock = file_path('disk_a', 'disk_b', 'nbd-sock')
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nbd_uri = 'nbd+unix:///?socket=' + nbd_sock
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size = 5 * 1024 * 1024
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wait_limit = 3
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wait_step = 0.2
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qemu_img_create('-f', iotests.imgfmt, disk_a, str(size))
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qemu_img_create('-f', iotests.imgfmt, disk_b, str(size))
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srv = qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b)
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# Wait for NBD server availability
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t = 0
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ok = False
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while t < wait_limit:
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ok = qemu_io_silent_check('-f', 'raw', '-c', 'read 0 512', nbd_uri)
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if ok:
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break
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time.sleep(wait_step)
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t += wait_step
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assert ok
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vm = iotests.VM().add_drive(disk_a)
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vm.launch()
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vm.hmp_qemu_io('drive0', 'write 0 {}'.format(size))
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vm.qmp_log('blockdev-add', filters=[iotests.filter_qmp_testfiles],
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**{'node_name': 'backup0',
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'driver': 'raw',
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'file': {'driver': 'nbd',
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'server': {'type': 'unix', 'path': nbd_sock},
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'reconnect-delay': 10}})
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vm.qmp_log('blockdev-backup', device='drive0', sync='full', target='backup0',
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speed=(1 * 1024 * 1024))
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# Wait for some progress
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t = 0
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while t < wait_limit:
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jobs = vm.qmp('query-block-jobs')['return']
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if jobs and jobs[0]['offset'] > 0:
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break
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time.sleep(wait_step)
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t += wait_step
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if jobs and jobs[0]['offset'] > 0:
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log('Backup job is started')
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log('Kill NBD server')
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srv.kill()
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srv.wait()
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jobs = vm.qmp('query-block-jobs')['return']
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if jobs and jobs[0]['offset'] < jobs[0]['len']:
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log('Backup job is still in progress')
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vm.qmp_log('block-job-set-speed', device='drive0', speed=0)
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# Emulate server down time for 1 second
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time.sleep(1)
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log('Start NBD server')
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srv = qemu_nbd_popen('-k', nbd_sock, '-f', iotests.imgfmt, disk_b)
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e = vm.event_wait('BLOCK_JOB_COMPLETED')
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log('Backup completed: {}'.format(e['data']['offset']))
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vm.qmp_log('blockdev-del', node_name='backup0')
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srv.kill()
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vm.shutdown()
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