qga: Installer: Wait for installation to finish
[qemu.git] / scripts / simplebench / bench_block_job.py
1 #!/usr/bin/env python
2 #
3 # Benchmark block jobs
4 #
5 # Copyright (c) 2019 Virtuozzo International GmbH.
6 #
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
11 #
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
16 #
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
19 #
20
21
22 import sys
23 import os
24 import socket
25 import json
26
27 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'python'))
28 from qemu.machine import QEMUMachine
29 from qemu.qmp import QMPConnectError
30
31
32 def bench_block_job(cmd, cmd_args, qemu_args):
33 """Benchmark block-job
34
35 cmd -- qmp command to run block-job (like blockdev-backup)
36 cmd_args -- dict of qmp command arguments
37 qemu_args -- list of Qemu command line arguments, including path to Qemu
38 binary
39
40 Returns {'seconds': int} on success and {'error': str} on failure, dict may
41 contain addional 'vm-log' field. Return value is compatible with
42 simplebench lib.
43 """
44
45 vm = QEMUMachine(qemu_args[0], args=qemu_args[1:])
46
47 try:
48 vm.launch()
49 except OSError as e:
50 return {'error': 'popen failed: ' + str(e)}
51 except (QMPConnectError, socket.timeout):
52 return {'error': 'qemu failed: ' + str(vm.get_log())}
53
54 try:
55 res = vm.qmp(cmd, **cmd_args)
56 if res != {'return': {}}:
57 vm.shutdown()
58 return {'error': '"{}" command failed: {}'.format(cmd, str(res))}
59
60 e = vm.event_wait('JOB_STATUS_CHANGE')
61 assert e['data']['status'] == 'created'
62 start_ms = e['timestamp']['seconds'] * 1000000 + \
63 e['timestamp']['microseconds']
64
65 e = vm.events_wait((('BLOCK_JOB_READY', None),
66 ('BLOCK_JOB_COMPLETED', None),
67 ('BLOCK_JOB_FAILED', None)), timeout=True)
68 if e['event'] not in ('BLOCK_JOB_READY', 'BLOCK_JOB_COMPLETED'):
69 vm.shutdown()
70 return {'error': 'block-job failed: ' + str(e),
71 'vm-log': vm.get_log()}
72 end_ms = e['timestamp']['seconds'] * 1000000 + \
73 e['timestamp']['microseconds']
74 finally:
75 vm.shutdown()
76
77 return {'seconds': (end_ms - start_ms) / 1000000.0}
78
79
80 # Bench backup or mirror
81 def bench_block_copy(qemu_binary, cmd, source, target):
82 """Helper to run bench_block_job() for mirror or backup"""
83 assert cmd in ('blockdev-backup', 'blockdev-mirror')
84
85 source['node-name'] = 'source'
86 target['node-name'] = 'target'
87
88 return bench_block_job(cmd,
89 {'job-id': 'job0', 'device': 'source',
90 'target': 'target', 'sync': 'full'},
91 [qemu_binary,
92 '-blockdev', json.dumps(source),
93 '-blockdev', json.dumps(target)])
94
95
96 def drv_file(filename):
97 return {'driver': 'file', 'filename': filename,
98 'cache': {'direct': True}, 'aio': 'native'}
99
100
101 def drv_nbd(host, port):
102 return {'driver': 'nbd',
103 'server': {'type': 'inet', 'host': host, 'port': port}}
104
105
106 if __name__ == '__main__':
107 import sys
108
109 if len(sys.argv) < 4:
110 print('USAGE: {} <qmp block-job command name> '
111 '<json string of arguments for the command> '
112 '<qemu binary path and arguments>'.format(sys.argv[0]))
113 exit(1)
114
115 res = bench_block_job(sys.argv[1], json.loads(sys.argv[2]), sys.argv[3:])
116 if 'seconds' in res:
117 print('{:.2f}'.format(res['seconds']))
118 else:
119 print(res)