b9420e4f4b
If we spy on the QMP commands instead, we don't need callers to remember to pass it. Seems like a fair trade-off. The one slightly weird bit is overloading this instance variable for wait(), where we use it to mean "don't issue the qmp 'quit' command". This means that wait() will "fail" if the QEMU process does not terminate of its own accord. In most cases, we probably did already actually issue quit -- some iotests do this -- but in some others, we may be waiting for QEMU to terminate for some other reason, such as a test wherein we tell the guest (directly) to shut down. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Hanna Reitz <hreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-id: 20211026175612.4127598-2-jsnow@redhat.com Signed-off-by: John Snow <jsnow@redhat.com>
191 lines
5.3 KiB
Python
Executable file
191 lines
5.3 KiB
Python
Executable file
#!/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: Max Reitz <mreitz@redhat.com>
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import iotests
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from iotests import log, qemu_img, qemu_io_silent
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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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ret = vm.qmp('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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assert ret['return'] == {}
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ret = vm.qmp('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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assert ret['return'] == {}
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if speed is not None:
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ret = vm.qmp('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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ret = vm.qmp('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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assert ret['return'] == {}
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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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assert qemu_img('create', '-f', iotests.imgfmt, src_img_path, '64M') == 0
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assert qemu_io_silent('-f', iotests.imgfmt, src_img_path,
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'-c', 'write -P 42 0M 64M') == 0
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vm.launch()
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ret = vm.qmp('object-add', qom_type='throttle-group', id='tg',
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limits={'bps-read': 4096})
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assert ret['return'] == {}
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ret = vm.qmp('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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assert ret['return'] == {}
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ret = vm.qmp('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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assert ret['return'] == {}
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ret = vm.qmp('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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assert ret['return'] == {}
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ret = vm.qmp('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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assert ret['return'] == {}
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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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