1 # Common utilities and Python wrappers for qemu-iotests
3 # Copyright (C) 2012 IBM Corp.
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program. If not, see <http://www.gnu.org/licenses/>.
32 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
36 # This will not work if arguments contain spaces but is necessary if we
37 # want to support the override options that ./check supports.
38 qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')]
39 if os.environ.get('QEMU_IMG_OPTIONS'):
40 qemu_img_args += os.environ['QEMU_IMG_OPTIONS'].strip().split(' ')
42 qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')]
43 if os.environ.get('QEMU_IO_OPTIONS'):
44 qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ')
46 qemu_nbd_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')]
47 if os.environ.get('QEMU_NBD_OPTIONS'):
48 qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ')
50 qemu_prog = os.environ.get('QEMU_PROG', 'qemu')
51 qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ')
53 imgfmt = os.environ.get('IMGFMT', 'raw')
54 imgproto = os.environ.get('IMGPROTO', 'file')
55 test_dir = os.environ.get('TEST_DIR')
56 output_dir = os.environ.get('OUTPUT_DIR', '.')
57 cachemode = os.environ.get('CACHEMODE')
58 qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE')
60 socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
63 luks_default_secret_object = 'secret,id=keysec0,data=' + \
64 os.environ['IMGKEYSECRET']
65 luks_default_key_secret_opt = 'key-secret=keysec0'
69 '''Run qemu-img and return the exit code'''
70 devnull = open('/dev/null', 'r+')
71 exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
73 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
76 def qemu_img_create(*args):
79 # default luks support
80 if '-f' in args and args[args.index('-f') + 1] == 'luks':
83 if 'key-secret' not in args[i + 1]:
84 args[i + 1].append(luks_default_key_secret_opt)
85 args.insert(i + 2, '--object')
86 args.insert(i + 3, luks_default_secret_object)
88 args = ['-o', luks_default_key_secret_opt,
89 '--object', luks_default_secret_object] + args
91 args.insert(0, 'create')
93 return qemu_img(*args)
95 def qemu_img_verbose(*args):
96 '''Run qemu-img without suppressing its output and return the exit code'''
97 exitcode = subprocess.call(qemu_img_args + list(args))
99 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
102 def qemu_img_pipe(*args):
103 '''Run qemu-img and return its output'''
104 subp = subprocess.Popen(qemu_img_args + list(args),
105 stdout=subprocess.PIPE,
106 stderr=subprocess.STDOUT)
107 exitcode = subp.wait()
109 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
110 return subp.communicate()[0]
113 '''Run qemu-io and return the stdout data'''
114 args = qemu_io_args + list(args)
115 subp = subprocess.Popen(args, stdout=subprocess.PIPE,
116 stderr=subprocess.STDOUT)
117 exitcode = subp.wait()
119 sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args)))
120 return subp.communicate()[0]
123 class QemuIoInteractive:
124 def __init__(self, *args):
125 self.args = qemu_io_args + list(args)
126 self._p = subprocess.Popen(self.args, stdin=subprocess.PIPE,
127 stdout=subprocess.PIPE,
128 stderr=subprocess.STDOUT)
129 assert self._p.stdout.read(9) == 'qemu-io> '
132 self._p.communicate('q\n')
134 def _read_output(self):
135 pattern = 'qemu-io> '
140 c = self._p.stdout.read(1)
141 # check unexpected EOF
144 if c == pattern[pos]:
149 return ''.join(s[:-n])
152 # quit command is in close(), '\n' is added automatically
153 assert '\n' not in cmd
155 assert cmd != 'q' and cmd != 'quit'
156 self._p.stdin.write(cmd + '\n')
157 return self._read_output()
161 '''Run qemu-nbd in daemon mode and return the parent's exit code'''
162 return subprocess.call(qemu_nbd_args + ['--fork'] + list(args))
164 def compare_images(img1, img2, fmt1=imgfmt, fmt2=imgfmt):
165 '''Return True if two image files are identical'''
166 return qemu_img('compare', '-f', fmt1,
167 '-F', fmt2, img1, img2) == 0
169 def create_image(name, size):
170 '''Create a fully-allocated raw image with sector markers'''
171 file = open(name, 'w')
174 sector = struct.pack('>l504xl', i / 512, i / 512)
180 '''Return image's virtual size'''
181 r = qemu_img_pipe('info', '--output=json', '-f', imgfmt, img)
182 return json.loads(r)['virtual-size']
184 test_dir_re = re.compile(r"%s" % test_dir)
185 def filter_test_dir(msg):
186 return test_dir_re.sub("TEST_DIR", msg)
188 win32_re = re.compile(r"\r")
189 def filter_win32(msg):
190 return win32_re.sub("", msg)
192 qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)")
193 def filter_qemu_io(msg):
194 msg = filter_win32(msg)
195 return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)", msg)
197 chown_re = re.compile(r"chown [0-9]+:[0-9]+")
198 def filter_chown(msg):
199 return chown_re.sub("chown UID:GID", msg)
201 def filter_qmp_event(event):
202 '''Filter a QMP event dict'''
204 if 'timestamp' in event:
205 event['timestamp']['seconds'] = 'SECS'
206 event['timestamp']['microseconds'] = 'USECS'
209 def log(msg, filters=[]):
215 def __init__(self, seconds, errmsg = "Timeout"):
216 self.seconds = seconds
219 signal.signal(signal.SIGALRM, self.timeout)
220 signal.setitimer(signal.ITIMER_REAL, self.seconds)
222 def __exit__(self, type, value, traceback):
223 signal.setitimer(signal.ITIMER_REAL, 0)
225 def timeout(self, signum, frame):
226 raise Exception(self.errmsg)
229 class FilePath(object):
230 '''An auto-generated filename that cleans itself up.
232 Use this context manager to generate filenames and ensure that the file
235 with TestFilePath('test.img') as img_path:
236 qemu_img('create', img_path, '1G')
237 # migration_sock_path is automatically deleted
239 def __init__(self, name):
240 filename = '{0}-{1}'.format(os.getpid(), name)
241 self.path = os.path.join(test_dir, filename)
246 def __exit__(self, exc_type, exc_val, exc_tb):
254 def file_path_remover():
255 for path in reversed(file_path_remover.paths):
262 def file_path(*names):
263 ''' Another way to get auto-generated filename that cleans itself up.
267 img_a, img_b = file_path('a.img', 'b.img')
268 sock = file_path('socket')
271 if not hasattr(file_path_remover, 'paths'):
272 file_path_remover.paths = []
273 atexit.register(file_path_remover)
277 filename = '{0}-{1}'.format(os.getpid(), name)
278 path = os.path.join(test_dir, filename)
279 file_path_remover.paths.append(path)
282 return paths[0] if len(paths) == 1 else paths
285 class VM(qtest.QEMUQtestMachine):
288 def __init__(self, path_suffix=''):
289 name = "qemu%s-%d" % (path_suffix, os.getpid())
290 super(VM, self).__init__(qemu_prog, qemu_opts, name=name,
292 socket_scm_helper=socket_scm_helper)
295 def add_object(self, opts):
296 self._args.append('-object')
297 self._args.append(opts)
300 def add_device(self, opts):
301 self._args.append('-device')
302 self._args.append(opts)
305 def add_drive_raw(self, opts):
306 self._args.append('-drive')
307 self._args.append(opts)
310 def add_drive(self, path, opts='', interface='virtio', format=imgfmt):
311 '''Add a virtio-blk drive to the VM'''
312 options = ['if=%s' % interface,
313 'id=drive%d' % self._num_drives]
316 options.append('file=%s' % path)
317 options.append('format=%s' % format)
318 options.append('cache=%s' % cachemode)
323 if format == 'luks' and 'key-secret' not in opts:
324 # default luks support
325 if luks_default_secret_object not in self._args:
326 self.add_object(luks_default_secret_object)
328 options.append(luks_default_key_secret_opt)
330 self._args.append('-drive')
331 self._args.append(','.join(options))
332 self._num_drives += 1
335 def add_blockdev(self, opts):
336 self._args.append('-blockdev')
337 if isinstance(opts, str):
338 self._args.append(opts)
340 self._args.append(','.join(opts))
343 def add_incoming(self, addr):
344 self._args.append('-incoming')
345 self._args.append(addr)
348 def pause_drive(self, drive, event=None):
349 '''Pause drive r/w operations'''
351 self.pause_drive(drive, "read_aio")
352 self.pause_drive(drive, "write_aio")
354 self.qmp('human-monitor-command',
355 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
357 def resume_drive(self, drive):
358 self.qmp('human-monitor-command',
359 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
361 def hmp_qemu_io(self, drive, cmd):
362 '''Write to a given drive using an HMP command'''
363 return self.qmp('human-monitor-command',
364 command_line='qemu-io %s "%s"' % (drive, cmd))
367 index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
369 class QMPTestCase(unittest.TestCase):
370 '''Abstract base class for QMP test cases'''
372 def dictpath(self, d, path):
373 '''Traverse a path in a nested dict'''
374 for component in path.split('/'):
375 m = index_re.match(component)
377 component, idx = m.groups()
380 if not isinstance(d, dict) or component not in d:
381 self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
385 if not isinstance(d, list):
386 self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
390 self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
393 def flatten_qmp_object(self, obj, output=None, basestr=''):
396 if isinstance(obj, list):
397 for i in range(len(obj)):
398 self.flatten_qmp_object(obj[i], output, basestr + str(i) + '.')
399 elif isinstance(obj, dict):
401 self.flatten_qmp_object(obj[key], output, basestr + key + '.')
403 output[basestr[:-1]] = obj # Strip trailing '.'
406 def qmp_to_opts(self, obj):
407 obj = self.flatten_qmp_object(obj)
410 output_list += [key + '=' + obj[key]]
411 return ','.join(output_list)
413 def assert_qmp_absent(self, d, path):
415 result = self.dictpath(d, path)
416 except AssertionError:
418 self.fail('path "%s" has value "%s"' % (path, str(result)))
420 def assert_qmp(self, d, path, value):
421 '''Assert that the value for a specific path in a QMP dict matches'''
422 result = self.dictpath(d, path)
423 self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value)))
425 def assert_no_active_block_jobs(self):
426 result = self.vm.qmp('query-block-jobs')
427 self.assert_qmp(result, 'return', [])
429 def assert_has_block_node(self, node_name=None, file_name=None):
430 """Issue a query-named-block-nodes and assert node_name and/or
431 file_name is present in the result"""
432 def check_equal_or_none(a, b):
433 return a == None or b == None or a == b
434 assert node_name or file_name
435 result = self.vm.qmp('query-named-block-nodes')
436 for x in result["return"]:
437 if check_equal_or_none(x.get("node-name"), node_name) and \
438 check_equal_or_none(x.get("file"), file_name):
440 self.assertTrue(False, "Cannot find %s %s in result:\n%s" % \
441 (node_name, file_name, result))
443 def assert_json_filename_equal(self, json_filename, reference):
444 '''Asserts that the given filename is a json: filename and that its
445 content is equal to the given reference object'''
446 self.assertEqual(json_filename[:5], 'json:')
447 self.assertEqual(self.flatten_qmp_object(json.loads(json_filename[5:])),
448 self.flatten_qmp_object(reference))
450 def cancel_and_wait(self, drive='drive0', force=False, resume=False):
451 '''Cancel a block job and wait for it to finish, returning the event'''
452 result = self.vm.qmp('block-job-cancel', device=drive, force=force)
453 self.assert_qmp(result, 'return', {})
456 self.vm.resume_drive(drive)
461 for event in self.vm.get_qmp_events(wait=True):
462 if event['event'] == 'BLOCK_JOB_COMPLETED' or \
463 event['event'] == 'BLOCK_JOB_CANCELLED':
464 self.assert_qmp(event, 'data/device', drive)
467 elif event['event'] == 'JOB_STATUS_CHANGE':
468 self.assert_qmp(event, 'data/id', drive)
471 self.assert_no_active_block_jobs()
474 def wait_until_completed(self, drive='drive0', check_offset=True):
475 '''Wait for a block job to finish, returning the event'''
477 for event in self.vm.get_qmp_events(wait=True):
478 if event['event'] == 'BLOCK_JOB_COMPLETED':
479 self.assert_qmp(event, 'data/device', drive)
480 self.assert_qmp_absent(event, 'data/error')
482 self.assert_qmp(event, 'data/offset', event['data']['len'])
483 self.assert_no_active_block_jobs()
485 elif event['event'] == 'JOB_STATUS_CHANGE':
486 self.assert_qmp(event, 'data/id', drive)
488 def wait_ready(self, drive='drive0'):
489 '''Wait until a block job BLOCK_JOB_READY event'''
490 f = {'data': {'type': 'mirror', 'device': drive } }
491 event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f)
493 def wait_ready_and_cancel(self, drive='drive0'):
494 self.wait_ready(drive=drive)
495 event = self.cancel_and_wait(drive=drive)
496 self.assertEquals(event['event'], 'BLOCK_JOB_COMPLETED')
497 self.assert_qmp(event, 'data/type', 'mirror')
498 self.assert_qmp(event, 'data/offset', event['data']['len'])
500 def complete_and_wait(self, drive='drive0', wait_ready=True):
501 '''Complete a block job and wait for it to finish'''
503 self.wait_ready(drive=drive)
505 result = self.vm.qmp('block-job-complete', device=drive)
506 self.assert_qmp(result, 'return', {})
508 event = self.wait_until_completed(drive=drive)
509 self.assert_qmp(event, 'data/type', 'mirror')
511 def pause_wait(self, job_id='job0'):
512 with Timeout(1, "Timeout waiting for job to pause"):
514 result = self.vm.qmp('query-block-jobs')
515 for job in result['return']:
516 if job['device'] == job_id and job['paused'] == True and job['busy'] == False:
519 def pause_job(self, job_id='job0', wait=True):
520 result = self.vm.qmp('block-job-pause', device=job_id)
521 self.assert_qmp(result, 'return', {})
523 return self.pause_wait(job_id)
528 '''Skip this test suite'''
529 # Each test in qemu-iotests has a number ("seq")
530 seq = os.path.basename(sys.argv[0])
532 open('%s/%s.notrun' % (output_dir, seq), 'wb').write(reason + '\n')
533 print '%s not run: %s' % (seq, reason)
536 def verify_image_format(supported_fmts=[], unsupported_fmts=[]):
537 assert not (supported_fmts and unsupported_fmts)
539 if 'generic' in supported_fmts and \
540 os.environ.get('IMGFMT_GENERIC', 'true') == 'true':
542 # _supported_fmt generic
546 not_sup = supported_fmts and (imgfmt not in supported_fmts)
547 if not_sup or (imgfmt in unsupported_fmts):
548 notrun('not suitable for this image format: %s' % imgfmt)
550 def verify_platform(supported_oses=['linux']):
551 if True not in [sys.platform.startswith(x) for x in supported_oses]:
552 notrun('not suitable for this OS: %s' % sys.platform)
554 def verify_cache_mode(supported_cache_modes=[]):
555 if supported_cache_modes and (cachemode not in supported_cache_modes):
556 notrun('not suitable for this cache mode: %s' % cachemode)
558 def supports_quorum():
559 return 'quorum' in qemu_img_pipe('--help')
562 '''Skip test suite if quorum support is not available'''
563 if not supports_quorum():
564 notrun('quorum support missing')
566 def main(supported_fmts=[], supported_oses=['linux'], supported_cache_modes=[],
567 unsupported_fmts=[]):
572 # We are using TEST_DIR and QEMU_DEFAULT_MACHINE as proxies to
573 # indicate that we're not being run via "check". There may be
574 # other things set up by "check" that individual test cases rely
576 if test_dir is None or qemu_default_machine is None:
577 sys.stderr.write('Please run this test via the "check" script\n')
578 sys.exit(os.EX_USAGE)
580 debug = '-d' in sys.argv
582 verify_image_format(supported_fmts, unsupported_fmts)
583 verify_platform(supported_oses)
584 verify_cache_mode(supported_cache_modes)
586 # We need to filter out the time taken from the output so that qemu-iotest
587 # can reliably diff the results against master output.
592 sys.argv.remove('-d')
594 output = StringIO.StringIO()
596 logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))
598 class MyTestRunner(unittest.TextTestRunner):
599 def __init__(self, stream=output, descriptions=True, verbosity=verbosity):
600 unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity)
602 # unittest.main() will use sys.exit() so expect a SystemExit exception
604 unittest.main(testRunner=MyTestRunner)
607 sys.stderr.write(re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', output.getvalue()))