1#!/usr/bin/env python3 2# group: migration 3# 4# Copyright (c) 2021 Virtuozzo International GmbH 5# 6# This program is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 2 of the License, or 9# (at your option) any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program. If not, see <http://www.gnu.org/licenses/>. 18# 19 20import os 21import iotests 22from iotests import qemu_img_create, qemu_io 23 24 25disk_a = os.path.join(iotests.test_dir, 'disk_a') 26disk_b = os.path.join(iotests.test_dir, 'disk_b') 27size = '1M' 28mig_file = os.path.join(iotests.test_dir, 'mig_file') 29mig_cmd = 'exec: cat > ' + mig_file 30 31 32class TestMigrateDuringBackup(iotests.QMPTestCase): 33 def tearDown(self): 34 self.vm.shutdown() 35 os.remove(disk_a) 36 os.remove(disk_b) 37 os.remove(mig_file) 38 39 def setUp(self): 40 qemu_img_create('-f', iotests.imgfmt, disk_a, size) 41 qemu_img_create('-f', iotests.imgfmt, disk_b, size) 42 qemu_io('-c', f'write 0 {size}', disk_a) 43 44 self.vm = iotests.VM().add_drive(disk_a) 45 self.vm.launch() 46 self.vm.cmd('blockdev-add', { 47 'node-name': 'target', 48 'driver': iotests.imgfmt, 49 'file': { 50 'driver': 'file', 51 'filename': disk_b 52 } 53 }) 54 55 def test_migrate(self): 56 self.vm.cmd('blockdev-backup', device='drive0', 57 target='target', sync='full', 58 speed=1, x_perf={ 59 'max-workers': 1, 60 'max-chunk': 64 * 1024 61 }) 62 63 self.vm.cmd('job-pause', id='drive0') 64 65 self.vm.cmd('migrate-set-capabilities', 66 capabilities=[{'capability': 'events', 67 'state': True}]) 68 self.vm.cmd('migrate', uri=mig_cmd) 69 70 e = self.vm.events_wait((('MIGRATION', 71 {'data': {'status': 'completed'}}), 72 ('MIGRATION', 73 {'data': {'status': 'failed'}}))) 74 75 # Don't assert that e is 'failed' now: this way we'll miss 76 # possible crash when backup continues :) 77 78 self.vm.cmd('block-job-set-speed', device='drive0', 79 speed=0) 80 self.vm.cmd('job-resume', id='drive0') 81 82 # For future: if something changes so that both migration 83 # and backup pass, let's not miss that moment, as it may 84 # be a bug as well as improvement. 85 self.assert_qmp(e, 'data/status', 'failed') 86 87 88if __name__ == '__main__': 89 iotests.main(supported_fmts=['qcow2'], 90 supported_protocols=['file']) 91