120 lines
3.9 KiB
Python
120 lines
3.9 KiB
Python
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#!/usr/bin/env python
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#
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# Benchmark block jobs
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#
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# Copyright (c) 2019 Virtuozzo International GmbH.
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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 socket
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import json
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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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from qemu.qmp import QMPConnectError
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def bench_block_job(cmd, cmd_args, qemu_args):
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"""Benchmark block-job
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cmd -- qmp command to run block-job (like blockdev-backup)
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cmd_args -- dict of qmp command arguments
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qemu_args -- list of Qemu command line arguments, including path to Qemu
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binary
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Returns {'seconds': int} on success and {'error': str} on failure, dict may
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contain addional 'vm-log' field. Return value is compatible with
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simplebench lib.
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"""
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vm = QEMUMachine(qemu_args[0], args=qemu_args[1:])
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try:
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vm.launch()
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except OSError as e:
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return {'error': 'popen failed: ' + str(e)}
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except (QMPConnectError, socket.timeout):
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return {'error': 'qemu failed: ' + str(vm.get_log())}
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try:
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res = vm.qmp(cmd, **cmd_args)
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if res != {'return': {}}:
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vm.shutdown()
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return {'error': '"{}" command failed: {}'.format(cmd, str(res))}
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e = vm.event_wait('JOB_STATUS_CHANGE')
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assert e['data']['status'] == 'created'
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start_ms = e['timestamp']['seconds'] * 1000000 + \
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e['timestamp']['microseconds']
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e = vm.events_wait((('BLOCK_JOB_READY', None),
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('BLOCK_JOB_COMPLETED', None),
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('BLOCK_JOB_FAILED', None)), timeout=True)
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if e['event'] not in ('BLOCK_JOB_READY', 'BLOCK_JOB_COMPLETED'):
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vm.shutdown()
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return {'error': 'block-job failed: ' + str(e),
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'vm-log': vm.get_log()}
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end_ms = e['timestamp']['seconds'] * 1000000 + \
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e['timestamp']['microseconds']
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finally:
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vm.shutdown()
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return {'seconds': (end_ms - start_ms) / 1000000.0}
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# Bench backup or mirror
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def bench_block_copy(qemu_binary, cmd, source, target):
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"""Helper to run bench_block_job() for mirror or backup"""
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assert cmd in ('blockdev-backup', 'blockdev-mirror')
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source['node-name'] = 'source'
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target['node-name'] = 'target'
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return bench_block_job(cmd,
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{'job-id': 'job0', 'device': 'source',
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'target': 'target', 'sync': 'full'},
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[qemu_binary,
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'-blockdev', json.dumps(source),
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'-blockdev', json.dumps(target)])
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def drv_file(filename):
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return {'driver': 'file', 'filename': filename,
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'cache': {'direct': True}, 'aio': 'native'}
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def drv_nbd(host, port):
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return {'driver': 'nbd',
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'server': {'type': 'inet', 'host': host, 'port': port}}
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if __name__ == '__main__':
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import sys
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if len(sys.argv) < 4:
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print('USAGE: {} <qmp block-job command name> '
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'<json string of arguments for the command> '
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'<qemu binary path and arguments>'.format(sys.argv[0]))
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exit(1)
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res = bench_block_job(sys.argv[1], json.loads(sys.argv[2]), sys.argv[3:])
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if 'seconds' in res:
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print('{:.2f}'.format(res['seconds']))
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else:
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print(res)
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