mirror of
https://gitlab.com/qemu-project/qemu
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093a13acbf
This makes these callsites a little simpler, but the real motivation is a forthcoming commit will change the return type of qemu_io(), so removing users of the return value now is helpful. Signed-off-by: John Snow <jsnow@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Hanna Reitz <hreitz@redhat.com> Message-Id: <20220418211504.943969-2-jsnow@redhat.com> Signed-off-by: Hanna Reitz <hreitz@redhat.com>
124 lines
4.1 KiB
Python
Executable file
124 lines
4.1 KiB
Python
Executable file
#!/usr/bin/env python3
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# group: rw quick
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#
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# Test commit job graph modifications while requests are active
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#
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# Copyright (C) 2019 Red Hat, Inc.
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#
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# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
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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 iotests
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from iotests import imgfmt
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iotests.script_initialize(supported_fmts=['qcow2'])
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iotests.log('Finishing a commit job with background reads')
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iotests.log('============================================')
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iotests.log('')
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with iotests.FilePath('t.qcow2') as disk_path, \
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iotests.FilePath('t.qcow2.mid') as mid_path, \
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iotests.FilePath('t.qcow2.base') as base_path, \
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iotests.VM() as vm:
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iotests.log("=== Create backing chain and start VM ===")
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iotests.log("")
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size = 128 * 1024 * 1024
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size_str = str(size)
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iotests.create_image(base_path, size)
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iotests.qemu_img_create('-f', iotests.imgfmt, mid_path, size_str)
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iotests.qemu_img_create('-f', iotests.imgfmt, disk_path, size_str)
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# Create a backing chain like this:
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# base <- [throttled: bps-read=4096] <- mid <- overlay
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vm.add_object('throttle-group,x-bps-read=4096,id=throttle0')
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vm.add_blockdev('file,filename=%s,node-name=base' % (base_path))
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vm.add_blockdev('throttle,throttle-group=throttle0,file=base,node-name=throttled')
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vm.add_blockdev('file,filename=%s,node-name=mid-file' % (mid_path))
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vm.add_blockdev('qcow2,file=mid-file,node-name=mid,backing=throttled')
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vm.add_drive_raw('if=none,id=overlay,driver=qcow2,file=%s,backing=mid' % (disk_path))
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vm.launch()
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iotests.log("=== Start background read requests ===")
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iotests.log("")
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def start_requests():
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vm.hmp_qemu_io('overlay', 'aio_read 0 4k')
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vm.hmp_qemu_io('overlay', 'aio_read 0 4k')
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start_requests()
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iotests.log("=== Run a commit job ===")
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iotests.log("")
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result = vm.qmp_log('block-commit', job_id='job0', auto_finalize=False,
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device='overlay', top_node='mid')
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vm.run_job('job0', auto_finalize=False, pre_finalize=start_requests,
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auto_dismiss=True)
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vm.shutdown()
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iotests.log('')
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iotests.log('Closing the VM while a job is being cancelled')
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iotests.log('=============================================')
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iotests.log('')
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with iotests.FilePath('src.qcow2') as src_path, \
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iotests.FilePath('dst.qcow2') as dst_path, \
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iotests.VM() as vm:
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iotests.log('=== Create images and start VM ===')
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iotests.log('')
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size = 128 * 1024 * 1024
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size_str = str(size)
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iotests.qemu_img_create('-f', iotests.imgfmt, src_path, size_str)
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iotests.qemu_img_create('-f', iotests.imgfmt, dst_path, size_str)
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iotests.qemu_io_log('-f', iotests.imgfmt, '-c', 'write 0 1M', src_path),
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vm.add_object('throttle-group,x-bps-read=4096,id=throttle0')
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vm.add_blockdev('file,node-name=src-file,filename=%s' % (src_path))
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vm.add_blockdev('%s,node-name=src,file=src-file' % (iotests.imgfmt))
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vm.add_blockdev('file,node-name=dst-file,filename=%s' % (dst_path))
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vm.add_blockdev('%s,node-name=dst,file=dst-file' % (iotests.imgfmt))
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vm.add_blockdev('throttle,node-name=src-throttled,' +
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'throttle-group=throttle0,file=src')
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vm.add_device('virtio-blk,drive=src-throttled')
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vm.launch()
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iotests.log('=== Start a mirror job ===')
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iotests.log('')
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vm.qmp_log('blockdev-mirror', job_id='job0', device='src-throttled',
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target='dst', sync='full')
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vm.qmp_log('block-job-cancel', device='job0')
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vm.qmp_log('quit')
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vm.shutdown()
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