1#!/usr/bin/env python3 2# 3# Copyright (C) 2017 Red Hat, Inc. 4# 5# This program is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License as published by 7# the Free Software Foundation; either version 2 of the License, or 8# (at your option) any later version. 9# 10# This program is distributed in the hope that it will be useful, 11# but WITHOUT ANY WARRANTY; without even the implied warranty of 12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13# GNU General Public License for more details. 14# 15# You should have received a copy of the GNU General Public License 16# along with this program. If not, see <http://www.gnu.org/licenses/>. 17# 18# Creator/Owner: Stefan Hajnoczi <stefanha@redhat.com> 19# 20# Non-shared storage migration test using NBD server and drive-mirror 21 22import iotests 23 24iotests.script_initialize(supported_fmts=['qcow2', 'qed', 'raw'], 25 supported_platforms=['linux']) 26 27with iotests.FilePath('source.img') as source_img_path, \ 28 iotests.FilePath('dest.img') as dest_img_path, \ 29 iotests.FilePath('migration.sock', 'nbd.sock', base_dir=iotests.sock_dir) \ 30 as (migration_sock_path, nbd_sock_path), \ 31 iotests.VM('source') as source_vm, \ 32 iotests.VM('dest') as dest_vm: 33 34 img_size = '1G' 35 iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, source_img_path, img_size) 36 iotests.qemu_img_pipe('create', '-f', iotests.imgfmt, dest_img_path, img_size) 37 38 iotests.log('Launching VMs...') 39 (source_vm.add_drive(source_img_path) 40 .launch()) 41 (dest_vm.add_drive(dest_img_path) 42 .add_incoming('unix:{0}'.format(migration_sock_path)) 43 .launch()) 44 45 source_vm.qmp_log('block-dirty-bitmap-add', node='drive0', name='bitmap0') 46 47 iotests.log('Launching NBD server on destination...') 48 iotests.log(dest_vm.qmp('nbd-server-start', addr={'type': 'unix', 'data': {'path': nbd_sock_path}})) 49 iotests.log(dest_vm.qmp('nbd-server-add', device='drive0', writable=True)) 50 51 iotests.log('Starting `drive-mirror` on source...') 52 iotests.log(source_vm.qmp( 53 'drive-mirror', 54 device='drive0', 55 target='nbd+unix:///drive0?socket={0}'.format(nbd_sock_path), 56 sync='full', 57 format='raw', # always raw, the server handles the format 58 mode='existing', 59 job_id='mirror-job0')) 60 61 iotests.log('Waiting for `drive-mirror` to complete...') 62 iotests.log(source_vm.event_wait('BLOCK_JOB_READY'), 63 filters=[iotests.filter_qmp_event]) 64 65 iotests.log('Starting migration...') 66 capabilities = [{'capability': 'events', 'state': True}, 67 {'capability': 'dirty-bitmaps', 'state': True}] 68 source_vm.qmp('migrate-set-capabilities', capabilities=capabilities) 69 dest_vm.qmp('migrate-set-capabilities', capabilities=capabilities) 70 iotests.log(source_vm.qmp('migrate', uri='unix:{0}'.format(migration_sock_path))) 71 72 source_vm.qmp_log('migrate-start-postcopy') 73 74 while True: 75 event1 = source_vm.event_wait('MIGRATION') 76 iotests.log(event1, filters=[iotests.filter_qmp_event]) 77 if event1['data']['status'] in ('completed', 'failed'): 78 iotests.log('Gracefully ending the `drive-mirror` job on source...') 79 iotests.log(source_vm.qmp('block-job-cancel', device='mirror-job0')) 80 break 81 82 while True: 83 event2 = source_vm.event_wait('BLOCK_JOB_COMPLETED') 84 iotests.log(event2, filters=[iotests.filter_qmp_event]) 85 if event2['event'] == 'BLOCK_JOB_COMPLETED': 86 iotests.log('Stopping the NBD server on destination...') 87 iotests.log(dest_vm.qmp('nbd-server-stop')) 88 break 89 90 iotests.log('Wait for migration completion on target...') 91 migr_events = (('MIGRATION', {'data': {'status': 'completed'}}), 92 ('MIGRATION', {'data': {'status': 'failed'}})) 93 event = dest_vm.events_wait(migr_events) 94 iotests.log(event, filters=[iotests.filter_qmp_event]) 95 96 iotests.log('Check bitmaps on source:') 97 iotests.log(source_vm.qmp('query-block')['return'][0]['dirty-bitmaps']) 98 99 iotests.log('Check bitmaps on target:') 100 iotests.log(dest_vm.qmp('query-block')['return'][0]['dirty-bitmaps']) 101