mirror of https://gitee.com/openkylin/qemu.git
80 lines
2.4 KiB
Python
Executable File
80 lines
2.4 KiB
Python
Executable File
#!/usr/bin/env python3
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# group: quick
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#
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# Simple mirror test
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#
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# Copyright (c) 2018 Virtuozzo International GmbH. All rights reserved.
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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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import sys
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import os
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import iotests
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from iotests import qemu_img_create, qemu_io, file_path, log
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sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
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from qemu.machine import QEMUMachine
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iotests.script_initialize(supported_fmts=['qcow2'])
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# Note:
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# This test was added to check that mirror dead-lock was fixed (see previous
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# commit before this test addition).
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# And it didn't reproduce if at least one of the following:
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# 1. use small image size
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# 2. use raw format (not qcow2)
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# 3. drop kvm and use iotests.VM() (maybe, because of qtest) (however, it still
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# reproduces, if just drop kvm, but gdb failed to produce full backtraces
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# for me)
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# 4. add iothread
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size = 1 * 1024 * 1024 * 1024
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disk = file_path('disk')
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# prepare source image
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qemu_img_create('-f', iotests.imgfmt, '-o', 'preallocation=metadata', disk,
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str(size))
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vm = QEMUMachine(iotests.qemu_prog)
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vm.add_args('-accel', 'kvm', '-accel', 'tcg')
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if iotests.qemu_default_machine == 's390-ccw-virtio':
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vm.add_args('-no-shutdown')
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vm.add_args('-drive', 'id=src,file=' + disk)
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vm.launch()
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log(vm.qmp('object-add', qom_type='throttle-group', id='tg0',
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limits={'bps-total': size}))
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log(vm.qmp('blockdev-add',
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**{ 'node-name': 'target',
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'driver': 'throttle',
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'throttle-group': 'tg0',
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'file': {
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'driver': 'null-co',
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'size': size
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} }))
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log(vm.qmp('blockdev-mirror', device='src', target='target', sync='full'))
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try:
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vm.event_wait('BLOCK_JOB_READY', timeout=10.0)
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except:
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vm.shutdown()
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raise
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vm.shutdown()
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