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/>.
25 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
26 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts', 'qmp'))
31 __all__ = ['imgfmt', 'imgproto', 'test_dir' 'qemu_img', 'qemu_io',
32 'VM', 'QMPTestCase', 'notrun', 'main', 'verify_image_format',
35 # This will not work if arguments contain spaces but is necessary if we
36 # want to support the override options that ./check supports.
37 qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')]
38 if os.environ.get('QEMU_IMG_OPTIONS'):
39 qemu_img_args += os.environ['QEMU_IMG_OPTIONS'].strip().split(' ')
41 qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')]
42 if os.environ.get('QEMU_IO_OPTIONS'):
43 qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ')
45 qemu_args = [os.environ.get('QEMU_PROG', 'qemu')]
46 if os.environ.get('QEMU_OPTIONS'):
47 qemu_args += os.environ['QEMU_OPTIONS'].strip().split(' ')
49 imgfmt = os.environ.get('IMGFMT', 'raw')
50 imgproto = os.environ.get('IMGPROTO', 'file')
51 test_dir = os.environ.get('TEST_DIR', '/var/tmp')
52 output_dir = os.environ.get('OUTPUT_DIR', '.')
53 cachemode = os.environ.get('CACHEMODE')
54 qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE')
56 socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
59 '''Run qemu-img and return the exit code'''
60 devnull = open('/dev/null', 'r+')
61 exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
63 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
66 def qemu_img_verbose(*args):
67 '''Run qemu-img without suppressing its output and return the exit code'''
68 exitcode = subprocess.call(qemu_img_args + list(args))
70 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
73 def qemu_img_pipe(*args):
74 '''Run qemu-img and return its output'''
75 subp = subprocess.Popen(qemu_img_args + list(args),
76 stdout=subprocess.PIPE,
77 stderr=subprocess.STDOUT)
78 exitcode = subp.wait()
80 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
81 return subp.communicate()[0]
84 '''Run qemu-io and return the stdout data'''
85 args = qemu_io_args + list(args)
86 subp = subprocess.Popen(args, stdout=subprocess.PIPE,
87 stderr=subprocess.STDOUT)
88 exitcode = subp.wait()
90 sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args)))
91 return subp.communicate()[0]
93 def compare_images(img1, img2):
94 '''Return True if two image files are identical'''
95 return qemu_img('compare', '-f', imgfmt,
96 '-F', imgfmt, img1, img2) == 0
98 def create_image(name, size):
99 '''Create a fully-allocated raw image with sector markers'''
100 file = open(name, 'w')
103 sector = struct.pack('>l504xl', i / 512, i / 512)
108 # Test if 'match' is a recursive subset of 'event'
109 def event_match(event, match=None):
115 if isinstance(event[key], dict):
116 if not event_match(event[key], match[key]):
118 elif event[key] != match[key]:
129 self._monitor_path = os.path.join(test_dir, 'qemu-mon.%d' % os.getpid())
130 self._qemu_log_path = os.path.join(test_dir, 'qemu-log.%d' % os.getpid())
131 self._qtest_path = os.path.join(test_dir, 'qemu-qtest.%d' % os.getpid())
132 self._args = qemu_args + ['-chardev',
133 'socket,id=mon,path=' + self._monitor_path,
134 '-mon', 'chardev=mon,mode=control',
135 '-qtest', 'unix:path=' + self._qtest_path,
136 '-machine', 'accel=qtest',
137 '-display', 'none', '-vga', 'none']
141 # This can be used to add an unused monitor instance.
142 def add_monitor_telnet(self, ip, port):
143 args = 'tcp:%s:%d,server,nowait,telnet' % (ip, port)
144 self._args.append('-monitor')
145 self._args.append(args)
147 def add_drive_raw(self, opts):
148 self._args.append('-drive')
149 self._args.append(opts)
152 def add_drive(self, path, opts='', interface='virtio'):
153 '''Add a virtio-blk drive to the VM'''
154 options = ['if=%s' % interface,
155 'id=drive%d' % self._num_drives]
158 options.append('file=%s' % path)
159 options.append('format=%s' % imgfmt)
160 options.append('cache=%s' % cachemode)
165 self._args.append('-drive')
166 self._args.append(','.join(options))
167 self._num_drives += 1
170 def pause_drive(self, drive, event=None):
171 '''Pause drive r/w operations'''
173 self.pause_drive(drive, "read_aio")
174 self.pause_drive(drive, "write_aio")
176 self.qmp('human-monitor-command',
177 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
179 def resume_drive(self, drive):
180 self.qmp('human-monitor-command',
181 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
183 def hmp_qemu_io(self, drive, cmd):
184 '''Write to a given drive using an HMP command'''
185 return self.qmp('human-monitor-command',
186 command_line='qemu-io %s "%s"' % (drive, cmd))
188 def add_fd(self, fd, fdset, opaque, opts=''):
189 '''Pass a file descriptor to the VM'''
190 options = ['fd=%d' % fd,
192 'opaque=%s' % opaque]
196 self._args.append('-add-fd')
197 self._args.append(','.join(options))
200 def send_fd_scm(self, fd_file_path):
201 # In iotest.py, the qmp should always use unix socket.
202 assert self._qmp.is_scm_available()
203 bin = socket_scm_helper
204 if os.path.exists(bin) == False:
205 print "Scm help program does not present, path '%s'." % bin
207 fd_param = ["%s" % bin,
208 "%d" % self._qmp.get_sock_fd(),
210 devnull = open('/dev/null', 'rb')
211 p = subprocess.Popen(fd_param, stdin=devnull, stdout=sys.stdout,
216 '''Launch the VM and establish a QMP connection'''
217 devnull = open('/dev/null', 'rb')
218 qemulog = open(self._qemu_log_path, 'wb')
220 self._qmp = qmp.QEMUMonitorProtocol(self._monitor_path, server=True)
221 self._qtest = qtest.QEMUQtestProtocol(self._qtest_path, server=True)
222 self._popen = subprocess.Popen(self._args, stdin=devnull, stdout=qemulog,
223 stderr=subprocess.STDOUT)
227 os.remove(self._monitor_path)
231 '''Terminate the VM and clean up'''
232 if not self._popen is None:
233 self._qmp.cmd('quit')
234 exitcode = self._popen.wait()
236 sys.stderr.write('qemu received signal %i: %s\n' % (-exitcode, ' '.join(self._args)))
237 os.remove(self._monitor_path)
238 os.remove(self._qtest_path)
239 os.remove(self._qemu_log_path)
242 underscore_to_dash = string.maketrans('_', '-')
243 def qmp(self, cmd, conv_keys=True, **args):
244 '''Invoke a QMP command and return the result dict'''
246 for k in args.keys():
248 qmp_args[k.translate(self.underscore_to_dash)] = args[k]
250 qmp_args[k] = args[k]
252 return self._qmp.cmd(cmd, args=qmp_args)
254 def qtest(self, cmd):
255 '''Send a qtest command to guest'''
256 return self._qtest.cmd(cmd)
258 def get_qmp_event(self, wait=False):
259 '''Poll for one queued QMP events and return it'''
260 if len(self._events) > 0:
261 return self._events.pop(0)
262 return self._qmp.pull_event(wait=wait)
264 def get_qmp_events(self, wait=False):
265 '''Poll for queued QMP events and return a list of dicts'''
266 events = self._qmp.get_events(wait=wait)
267 events.extend(self._events)
269 self._qmp.clear_events()
272 def event_wait(self, name='BLOCK_JOB_COMPLETED', timeout=60.0, match=None):
273 # Search cached events
274 for event in self._events:
275 if (event['event'] == name) and event_match(event, match):
276 self._events.remove(event)
279 # Poll for new events
281 event = self._qmp.pull_event(wait=timeout)
282 if (event['event'] == name) and event_match(event, match):
284 self._events.append(event)
288 index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
290 class QMPTestCase(unittest.TestCase):
291 '''Abstract base class for QMP test cases'''
293 def dictpath(self, d, path):
294 '''Traverse a path in a nested dict'''
295 for component in path.split('/'):
296 m = index_re.match(component)
298 component, idx = m.groups()
301 if not isinstance(d, dict) or component not in d:
302 self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
306 if not isinstance(d, list):
307 self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
311 self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
314 def assert_qmp_absent(self, d, path):
316 result = self.dictpath(d, path)
317 except AssertionError:
319 self.fail('path "%s" has value "%s"' % (path, str(result)))
321 def assert_qmp(self, d, path, value):
322 '''Assert that the value for a specific path in a QMP dict matches'''
323 result = self.dictpath(d, path)
324 self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value)))
326 def assert_no_active_block_jobs(self):
327 result = self.vm.qmp('query-block-jobs')
328 self.assert_qmp(result, 'return', [])
330 def cancel_and_wait(self, drive='drive0', force=False, resume=False):
331 '''Cancel a block job and wait for it to finish, returning the event'''
332 result = self.vm.qmp('block-job-cancel', device=drive, force=force)
333 self.assert_qmp(result, 'return', {})
336 self.vm.resume_drive(drive)
341 for event in self.vm.get_qmp_events(wait=True):
342 if event['event'] == 'BLOCK_JOB_COMPLETED' or \
343 event['event'] == 'BLOCK_JOB_CANCELLED':
344 self.assert_qmp(event, 'data/device', drive)
348 self.assert_no_active_block_jobs()
351 def wait_until_completed(self, drive='drive0', check_offset=True):
352 '''Wait for a block job to finish, returning the event'''
355 for event in self.vm.get_qmp_events(wait=True):
356 if event['event'] == 'BLOCK_JOB_COMPLETED':
357 self.assert_qmp(event, 'data/device', drive)
358 self.assert_qmp_absent(event, 'data/error')
360 self.assert_qmp(event, 'data/offset', event['data']['len'])
363 self.assert_no_active_block_jobs()
366 def wait_ready(self, drive='drive0'):
367 '''Wait until a block job BLOCK_JOB_READY event'''
368 f = {'data': {'type': 'mirror', 'device': drive } }
369 event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f)
371 def wait_ready_and_cancel(self, drive='drive0'):
372 self.wait_ready(drive=drive)
373 event = self.cancel_and_wait(drive=drive)
374 self.assertEquals(event['event'], 'BLOCK_JOB_COMPLETED')
375 self.assert_qmp(event, 'data/type', 'mirror')
376 self.assert_qmp(event, 'data/offset', event['data']['len'])
378 def complete_and_wait(self, drive='drive0', wait_ready=True):
379 '''Complete a block job and wait for it to finish'''
381 self.wait_ready(drive=drive)
383 result = self.vm.qmp('block-job-complete', device=drive)
384 self.assert_qmp(result, 'return', {})
386 event = self.wait_until_completed(drive=drive)
387 self.assert_qmp(event, 'data/type', 'mirror')
390 '''Skip this test suite'''
391 # Each test in qemu-iotests has a number ("seq")
392 seq = os.path.basename(sys.argv[0])
394 open('%s/%s.notrun' % (output_dir, seq), 'wb').write(reason + '\n')
395 print '%s not run: %s' % (seq, reason)
398 def verify_image_format(supported_fmts=[]):
399 if supported_fmts and (imgfmt not in supported_fmts):
400 notrun('not suitable for this image format: %s' % imgfmt)
402 def verify_platform(supported_oses=['linux']):
403 if True not in [sys.platform.startswith(x) for x in supported_oses]:
404 notrun('not suitable for this OS: %s' % sys.platform)
406 def main(supported_fmts=[], supported_oses=['linux']):
409 debug = '-d' in sys.argv
411 verify_image_format(supported_fmts)
412 verify_platform(supported_oses)
414 # We need to filter out the time taken from the output so that qemu-iotest
415 # can reliably diff the results against master output.
420 sys.argv.remove('-d')
422 output = StringIO.StringIO()
424 class MyTestRunner(unittest.TextTestRunner):
425 def __init__(self, stream=output, descriptions=True, verbosity=verbosity):
426 unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity)
428 # unittest.main() will use sys.exit() so expect a SystemExit exception
430 unittest.main(testRunner=MyTestRunner)
433 sys.stderr.write(re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', output.getvalue()))