tests/qemu-iotests/218

   1 #!/usr/bin/env python
   2 #
   3 # This test covers what happens when a mirror block job is cancelled
   4 # in various phases of its existence.
   5 #
   6 # Note that this test only checks the emitted events (i.e.
   7 # BLOCK_JOB_COMPLETED vs. BLOCK_JOB_CANCELLED), it does not compare
   8 # whether the target is in sync with the source when the
   9 # BLOCK_JOB_COMPLETED event occurs.  This is covered by other tests
  10 # (such as 041).
  11 #
  12 # Copyright (C) 2018 Red Hat, Inc.
  13 #
  14 # This program is free software; you can redistribute it and/or modify
  15 # it under the terms of the GNU General Public License as published by
  16 # the Free Software Foundation; either version 2 of the License, or
  17 # (at your option) any later version.
  18 #
  19 # This program is distributed in the hope that it will be useful,
  20 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 # GNU General Public License for more details.
  23 #
  24 # You should have received a copy of the GNU General Public License
  25 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  26 #
  27 # Creator/Owner: Max Reitz <[email protected]>
  28
  29 import iotests
  30 from iotests import log, qemu_img, qemu_io_silent
  31
  32 iotests.verify_image_format(supported_fmts=['qcow2', 'raw'])
  33
  34
  35 # Launches the VM, adds two null-co nodes (source and target), and
  36 # starts a blockdev-mirror job on them.
  37 #
  38 # Either both or none of speed and buf_size must be given.
  39
  40 def start_mirror(vm, speed=None, buf_size=None):
  41     vm.launch()
  42
  43     ret = vm.qmp('blockdev-add',
  44                      node_name='source',
  45                      driver='null-co',
  46                      size=1048576)
  47     assert ret['return'] == {}
  48
  49     ret = vm.qmp('blockdev-add',
  50                      node_name='target',
  51                      driver='null-co',
  52                      size=1048576)
  53     assert ret['return'] == {}
  54
  55     if speed is not None:
  56         ret = vm.qmp('blockdev-mirror',
  57                          job_id='mirror',
  58                          device='source',
  59                          target='target',
  60                          sync='full',
  61                          speed=speed,
  62                          buf_size=buf_size)
  63     else:
  64         ret = vm.qmp('blockdev-mirror',
  65                          job_id='mirror',
  66                          device='source',
  67                          target='target',
  68                          sync='full')
  69
  70     assert ret['return'] == {}
  71
  72
  73 log('')
  74 log('=== Cancel mirror job before convergence ===')
  75 log('')
  76
  77 log('--- force=false ---')
  78 log('')
  79
  80 with iotests.VM() as vm:
  81     # Low speed so it does not converge
  82     start_mirror(vm, 65536, 65536)
  83
  84     log('Cancelling job')
  85     log(vm.qmp('block-job-cancel', device='mirror', force=False))
  86
  87     log(vm.event_wait('BLOCK_JOB_CANCELLED'),
  88         filters=[iotests.filter_qmp_event])
  89
  90 log('')
  91 log('--- force=true ---')
  92 log('')
  93
  94 with iotests.VM() as vm:
  95     # Low speed so it does not converge
  96     start_mirror(vm, 65536, 65536)
  97
  98     log('Cancelling job')
  99     log(vm.qmp('block-job-cancel', device='mirror', force=True))
 100
 101     log(vm.event_wait('BLOCK_JOB_CANCELLED'),
 102         filters=[iotests.filter_qmp_event])
 103
 104
 105 log('')
 106 log('=== Cancel mirror job after convergence ===')
 107 log('')
 108
 109 log('--- force=false ---')
 110 log('')
 111
 112 with iotests.VM() as vm:
 113     start_mirror(vm)
 114
 115     log(vm.event_wait('BLOCK_JOB_READY'),
 116         filters=[iotests.filter_qmp_event])
 117
 118     log('Cancelling job')
 119     log(vm.qmp('block-job-cancel', device='mirror', force=False))
 120
 121     log(vm.event_wait('BLOCK_JOB_COMPLETED'),
 122         filters=[iotests.filter_qmp_event])
 123
 124 log('')
 125 log('--- force=true ---')
 126 log('')
 127
 128 with iotests.VM() as vm:
 129     start_mirror(vm)
 130
 131     log(vm.event_wait('BLOCK_JOB_READY'),
 132         filters=[iotests.filter_qmp_event])
 133
 134     log('Cancelling job')
 135     log(vm.qmp('block-job-cancel', device='mirror', force=True))
 136
 137     log(vm.event_wait('BLOCK_JOB_CANCELLED'),
 138         filters=[iotests.filter_qmp_event])
 139
 140 log('')
 141 log('=== Cancel mirror job from throttled node by quitting ===')
 142 log('')
 143
 144 with iotests.VM() as vm, \
 145      iotests.FilePath('src.img') as src_img_path:
 146
 147     assert qemu_img('create', '-f', iotests.imgfmt, src_img_path, '64M') == 0
 148     assert qemu_io_silent('-f', iotests.imgfmt, src_img_path,
 149                           '-c', 'write -P 42 0M 64M') == 0
 150
 151     vm.launch()
 152
 153     ret = vm.qmp('object-add', qom_type='throttle-group', id='tg',
 154                  props={'x-bps-read': 4096})
 155     assert ret['return'] == {}
 156
 157     ret = vm.qmp('blockdev-add',
 158                  node_name='source',
 159                  driver=iotests.imgfmt,
 160                  file={
 161                      'driver': 'file',
 162                      'filename': src_img_path
 163                  })
 164     assert ret['return'] == {}
 165
 166     ret = vm.qmp('blockdev-add',
 167                  node_name='throttled-source',
 168                  driver='throttle',
 169                  throttle_group='tg',
 170                  file='source')
 171     assert ret['return'] == {}
 172
 173     ret = vm.qmp('blockdev-add',
 174                  node_name='target',
 175                  driver='null-co',
 176                  size=(64 * 1048576))
 177     assert ret['return'] == {}
 178
 179     ret = vm.qmp('blockdev-mirror',
 180                  job_id='mirror',
 181                  device='throttled-source',
 182                  target='target',
 183                  sync='full')
 184     assert ret['return'] == {}
 185
 186     log(vm.qmp('quit'))
 187
 188     with iotests.Timeout(5, 'Timeout waiting for VM to quit'):
 189         vm.shutdown(has_quit=True)