tests/qemu-iotests/194

   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
  22 import iotests
  23
  24 iotests.verify_image_format(supported_fmts=['qcow2', 'qed', 'raw'])
  25 iotests.verify_platform(['linux'])
  26
  27 with iotests.FilePath('source.img') as source_img_path, \
  28      iotests.FilePath('dest.img') as dest_img_path, \
  29      iotests.FilePaths(['migration.sock', 'nbd.sock'], iotests.sock_dir) as \
  30          [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     iotests.log('Launching NBD server on destination...')
  46     iotests.log(dest_vm.qmp('nbd-server-start', addr={'type': 'unix', 'data': {'path': nbd_sock_path}}))
  47     iotests.log(dest_vm.qmp('nbd-server-add', device='drive0', writable=True))
  48
  49     iotests.log('Starting `drive-mirror` on source...')
  50     iotests.log(source_vm.qmp(
  51                   'drive-mirror',
  52                   device='drive0',
  53                   target='nbd+unix:///drive0?socket={0}'.format(nbd_sock_path),
  54                   sync='full',
  55                   format='raw', # always raw, the server handles the format
  56                   mode='existing',
  57                   job_id='mirror-job0'))
  58
  59     iotests.log('Waiting for `drive-mirror` to complete...')
  60     iotests.log(source_vm.event_wait('BLOCK_JOB_READY'),
  61                 filters=[iotests.filter_qmp_event])
  62
  63     iotests.log('Starting migration...')
  64     source_vm.qmp('migrate-set-capabilities',
  65                   capabilities=[{'capability': 'events', 'state': True}])
  66     dest_vm.qmp('migrate-set-capabilities',
  67                 capabilities=[{'capability': 'events', 'state': True}])
  68     iotests.log(source_vm.qmp('migrate', uri='unix:{0}'.format(migration_sock_path)))
  69
  70     while True:
  71         event1 = source_vm.event_wait('MIGRATION')
  72         iotests.log(event1, filters=[iotests.filter_qmp_event])
  73         if event1['data']['status'] in ('completed', 'failed'):
  74             iotests.log('Gracefully ending the `drive-mirror` job on source...')
  75             iotests.log(source_vm.qmp('block-job-cancel', device='mirror-job0'))
  76             break
  77
  78     while True:
  79         event2 = source_vm.event_wait('BLOCK_JOB_COMPLETED')
  80         iotests.log(event2, filters=[iotests.filter_qmp_event])
  81         if event2['event'] == 'BLOCK_JOB_COMPLETED':
  82             iotests.log('Stopping the NBD server on destination...')
  83             iotests.log(dest_vm.qmp('nbd-server-stop'))
  84             break