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181 lines
4.7 KiB
Python
181 lines
4.7 KiB
Python
#!/usr/bin/env python3
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# group: rw quick
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#
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# This test covers what happens when a mirror block job is cancelled
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# in various phases of its existence.
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#
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# Note that this test only checks the emitted events (i.e.
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# BLOCK_JOB_COMPLETED vs. BLOCK_JOB_CANCELLED), it does not compare
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# whether the target is in sync with the source when the
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# BLOCK_JOB_COMPLETED event occurs. This is covered by other tests
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# (such as 041).
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#
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# Copyright (C) 2018 Red Hat, Inc.
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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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# Creator/Owner: Hanna Reitz <hreitz@redhat.com>
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import iotests
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from iotests import log, qemu_img, qemu_io
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iotests.script_initialize(supported_fmts=['qcow2', 'raw'])
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# Launches the VM, adds two null-co nodes (source and target), and
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# starts a blockdev-mirror job on them.
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#
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# Either both or none of speed and buf_size must be given.
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def start_mirror(vm, speed=None, buf_size=None):
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vm.launch()
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vm.cmd('blockdev-add',
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node_name='source',
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driver='null-co',
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size=1048576)
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vm.cmd('blockdev-add',
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node_name='target',
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driver='null-co',
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size=1048576)
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if speed is not None:
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vm.cmd('blockdev-mirror',
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job_id='mirror',
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device='source',
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target='target',
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sync='full',
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speed=speed,
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buf_size=buf_size)
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else:
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vm.cmd('blockdev-mirror',
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job_id='mirror',
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device='source',
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target='target',
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sync='full')
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log('')
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log('=== Cancel mirror job before convergence ===')
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log('')
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log('--- force=false ---')
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log('')
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with iotests.VM() as vm:
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# Low speed so it does not converge
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start_mirror(vm, 65536, 65536)
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log('Cancelling job')
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log(vm.qmp('block-job-cancel', device='mirror', force=False))
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log(vm.event_wait('BLOCK_JOB_CANCELLED'),
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filters=[iotests.filter_qmp_event])
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log('')
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log('--- force=true ---')
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log('')
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with iotests.VM() as vm:
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# Low speed so it does not converge
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start_mirror(vm, 65536, 65536)
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log('Cancelling job')
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log(vm.qmp('block-job-cancel', device='mirror', force=True))
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log(vm.event_wait('BLOCK_JOB_CANCELLED'),
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filters=[iotests.filter_qmp_event])
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log('')
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log('=== Cancel mirror job after convergence ===')
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log('')
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log('--- force=false ---')
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log('')
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with iotests.VM() as vm:
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start_mirror(vm)
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log(vm.event_wait('BLOCK_JOB_READY'),
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filters=[iotests.filter_qmp_event])
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log('Cancelling job')
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log(vm.qmp('block-job-cancel', device='mirror', force=False))
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log(vm.event_wait('BLOCK_JOB_COMPLETED'),
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filters=[iotests.filter_qmp_event])
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log('')
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log('--- force=true ---')
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log('')
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with iotests.VM() as vm:
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start_mirror(vm)
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log(vm.event_wait('BLOCK_JOB_READY'),
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filters=[iotests.filter_qmp_event])
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log('Cancelling job')
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log(vm.qmp('block-job-cancel', device='mirror', force=True))
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log(vm.event_wait('BLOCK_JOB_CANCELLED'),
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filters=[iotests.filter_qmp_event])
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log('')
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log('=== Cancel mirror job from throttled node by quitting ===')
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log('')
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with iotests.VM() as vm, \
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iotests.FilePath('src.img') as src_img_path:
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qemu_img('create', '-f', iotests.imgfmt, src_img_path, '64M')
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qemu_io('-f', iotests.imgfmt, src_img_path, '-c', 'write -P 42 0M 64M')
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vm.launch()
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vm.cmd('object-add', qom_type='throttle-group', id='tg',
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limits={'bps-read': 4096})
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vm.cmd('blockdev-add',
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node_name='source',
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driver=iotests.imgfmt,
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file={
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'driver': 'file',
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'filename': src_img_path
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})
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vm.cmd('blockdev-add',
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node_name='throttled-source',
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driver='throttle',
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throttle_group='tg',
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file='source')
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vm.cmd('blockdev-add',
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node_name='target',
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driver='null-co',
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size=(64 * 1048576))
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vm.cmd('blockdev-mirror',
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job_id='mirror',
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device='throttled-source',
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target='target',
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sync='full')
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log(vm.qmp('quit'))
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with iotests.Timeout(5, 'Timeout waiting for VM to quit'):
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vm.shutdown()
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