62a9428812
qmp_to_opts() used to be a method of QMPTestCase, but recently we started to add more Python test cases that don't make use of QMPTestCase. In order to make the method usable there, move it to VM. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Max Reitz <mreitz@redhat.com>
609 lines
21 KiB
Python
609 lines
21 KiB
Python
# Common utilities and Python wrappers for qemu-iotests
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#
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# Copyright (C) 2012 IBM Corp.
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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 errno
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import os
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import re
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import subprocess
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import string
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import unittest
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import sys
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import struct
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import json
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import signal
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import logging
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import atexit
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sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
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import qtest
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# This will not work if arguments contain spaces but is necessary if we
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# want to support the override options that ./check supports.
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qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')]
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if os.environ.get('QEMU_IMG_OPTIONS'):
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qemu_img_args += os.environ['QEMU_IMG_OPTIONS'].strip().split(' ')
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qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')]
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if os.environ.get('QEMU_IO_OPTIONS'):
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qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ')
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qemu_nbd_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')]
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if os.environ.get('QEMU_NBD_OPTIONS'):
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qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ')
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qemu_prog = os.environ.get('QEMU_PROG', 'qemu')
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qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ')
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imgfmt = os.environ.get('IMGFMT', 'raw')
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imgproto = os.environ.get('IMGPROTO', 'file')
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test_dir = os.environ.get('TEST_DIR')
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output_dir = os.environ.get('OUTPUT_DIR', '.')
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cachemode = os.environ.get('CACHEMODE')
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qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE')
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socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
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debug = False
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luks_default_secret_object = 'secret,id=keysec0,data=' + \
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os.environ['IMGKEYSECRET']
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luks_default_key_secret_opt = 'key-secret=keysec0'
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def qemu_img(*args):
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'''Run qemu-img and return the exit code'''
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devnull = open('/dev/null', 'r+')
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exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
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if exitcode < 0:
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sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
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return exitcode
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def qemu_img_create(*args):
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args = list(args)
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# default luks support
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if '-f' in args and args[args.index('-f') + 1] == 'luks':
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if '-o' in args:
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i = args.index('-o')
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if 'key-secret' not in args[i + 1]:
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args[i + 1].append(luks_default_key_secret_opt)
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args.insert(i + 2, '--object')
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args.insert(i + 3, luks_default_secret_object)
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else:
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args = ['-o', luks_default_key_secret_opt,
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'--object', luks_default_secret_object] + args
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args.insert(0, 'create')
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return qemu_img(*args)
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def qemu_img_verbose(*args):
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'''Run qemu-img without suppressing its output and return the exit code'''
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exitcode = subprocess.call(qemu_img_args + list(args))
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if exitcode < 0:
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sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
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return exitcode
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def qemu_img_pipe(*args):
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'''Run qemu-img and return its output'''
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subp = subprocess.Popen(qemu_img_args + list(args),
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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exitcode = subp.wait()
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if exitcode < 0:
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sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
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return subp.communicate()[0]
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def qemu_io(*args):
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'''Run qemu-io and return the stdout data'''
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args = qemu_io_args + list(args)
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subp = subprocess.Popen(args, stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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exitcode = subp.wait()
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if exitcode < 0:
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sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args)))
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return subp.communicate()[0]
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class QemuIoInteractive:
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def __init__(self, *args):
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self.args = qemu_io_args + list(args)
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self._p = subprocess.Popen(self.args, stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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assert self._p.stdout.read(9) == 'qemu-io> '
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def close(self):
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self._p.communicate('q\n')
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def _read_output(self):
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pattern = 'qemu-io> '
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n = len(pattern)
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pos = 0
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s = []
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while pos != n:
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c = self._p.stdout.read(1)
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# check unexpected EOF
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assert c != ''
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s.append(c)
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if c == pattern[pos]:
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pos += 1
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else:
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pos = 0
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return ''.join(s[:-n])
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def cmd(self, cmd):
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# quit command is in close(), '\n' is added automatically
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assert '\n' not in cmd
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cmd = cmd.strip()
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assert cmd != 'q' and cmd != 'quit'
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self._p.stdin.write(cmd + '\n')
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return self._read_output()
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def qemu_nbd(*args):
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'''Run qemu-nbd in daemon mode and return the parent's exit code'''
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return subprocess.call(qemu_nbd_args + ['--fork'] + list(args))
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def compare_images(img1, img2, fmt1=imgfmt, fmt2=imgfmt):
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'''Return True if two image files are identical'''
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return qemu_img('compare', '-f', fmt1,
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'-F', fmt2, img1, img2) == 0
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def create_image(name, size):
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'''Create a fully-allocated raw image with sector markers'''
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file = open(name, 'w')
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i = 0
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while i < size:
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sector = struct.pack('>l504xl', i / 512, i / 512)
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file.write(sector)
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i = i + 512
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file.close()
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def image_size(img):
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'''Return image's virtual size'''
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r = qemu_img_pipe('info', '--output=json', '-f', imgfmt, img)
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return json.loads(r)['virtual-size']
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test_dir_re = re.compile(r"%s" % test_dir)
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def filter_test_dir(msg):
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return test_dir_re.sub("TEST_DIR", msg)
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win32_re = re.compile(r"\r")
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def filter_win32(msg):
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return win32_re.sub("", msg)
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qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)")
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def filter_qemu_io(msg):
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msg = filter_win32(msg)
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return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)", msg)
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chown_re = re.compile(r"chown [0-9]+:[0-9]+")
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def filter_chown(msg):
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return chown_re.sub("chown UID:GID", msg)
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def filter_qmp_event(event):
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'''Filter a QMP event dict'''
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event = dict(event)
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if 'timestamp' in event:
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event['timestamp']['seconds'] = 'SECS'
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event['timestamp']['microseconds'] = 'USECS'
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return event
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def log(msg, filters=[]):
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for flt in filters:
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msg = flt(msg)
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print msg
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class Timeout:
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def __init__(self, seconds, errmsg = "Timeout"):
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self.seconds = seconds
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self.errmsg = errmsg
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def __enter__(self):
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signal.signal(signal.SIGALRM, self.timeout)
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signal.setitimer(signal.ITIMER_REAL, self.seconds)
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return self
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def __exit__(self, type, value, traceback):
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signal.setitimer(signal.ITIMER_REAL, 0)
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return False
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def timeout(self, signum, frame):
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raise Exception(self.errmsg)
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class FilePath(object):
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'''An auto-generated filename that cleans itself up.
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Use this context manager to generate filenames and ensure that the file
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gets deleted::
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with TestFilePath('test.img') as img_path:
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qemu_img('create', img_path, '1G')
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# migration_sock_path is automatically deleted
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'''
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def __init__(self, name):
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filename = '{0}-{1}'.format(os.getpid(), name)
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self.path = os.path.join(test_dir, filename)
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def __enter__(self):
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return self.path
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def __exit__(self, exc_type, exc_val, exc_tb):
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try:
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os.remove(self.path)
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except OSError:
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pass
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return False
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def file_path_remover():
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for path in reversed(file_path_remover.paths):
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try:
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os.remove(path)
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except OSError:
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pass
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def file_path(*names):
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''' Another way to get auto-generated filename that cleans itself up.
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Use is as simple as:
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img_a, img_b = file_path('a.img', 'b.img')
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sock = file_path('socket')
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'''
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if not hasattr(file_path_remover, 'paths'):
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file_path_remover.paths = []
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atexit.register(file_path_remover)
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paths = []
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for name in names:
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filename = '{0}-{1}'.format(os.getpid(), name)
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path = os.path.join(test_dir, filename)
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file_path_remover.paths.append(path)
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paths.append(path)
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return paths[0] if len(paths) == 1 else paths
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class VM(qtest.QEMUQtestMachine):
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'''A QEMU VM'''
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def __init__(self, path_suffix=''):
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name = "qemu%s-%d" % (path_suffix, os.getpid())
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super(VM, self).__init__(qemu_prog, qemu_opts, name=name,
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test_dir=test_dir,
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socket_scm_helper=socket_scm_helper)
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self._num_drives = 0
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def add_object(self, opts):
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self._args.append('-object')
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self._args.append(opts)
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return self
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def add_device(self, opts):
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self._args.append('-device')
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self._args.append(opts)
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return self
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def add_drive_raw(self, opts):
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self._args.append('-drive')
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self._args.append(opts)
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return self
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def add_drive(self, path, opts='', interface='virtio', format=imgfmt):
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'''Add a virtio-blk drive to the VM'''
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options = ['if=%s' % interface,
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'id=drive%d' % self._num_drives]
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if path is not None:
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options.append('file=%s' % path)
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options.append('format=%s' % format)
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options.append('cache=%s' % cachemode)
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if opts:
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options.append(opts)
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if format == 'luks' and 'key-secret' not in opts:
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# default luks support
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if luks_default_secret_object not in self._args:
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self.add_object(luks_default_secret_object)
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options.append(luks_default_key_secret_opt)
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self._args.append('-drive')
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self._args.append(','.join(options))
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self._num_drives += 1
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return self
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def add_blockdev(self, opts):
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self._args.append('-blockdev')
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if isinstance(opts, str):
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self._args.append(opts)
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else:
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self._args.append(','.join(opts))
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return self
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def add_incoming(self, addr):
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self._args.append('-incoming')
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self._args.append(addr)
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return self
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def pause_drive(self, drive, event=None):
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'''Pause drive r/w operations'''
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if not event:
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self.pause_drive(drive, "read_aio")
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self.pause_drive(drive, "write_aio")
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return
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self.qmp('human-monitor-command',
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command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
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def resume_drive(self, drive):
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self.qmp('human-monitor-command',
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command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
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def hmp_qemu_io(self, drive, cmd):
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'''Write to a given drive using an HMP command'''
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return self.qmp('human-monitor-command',
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command_line='qemu-io %s "%s"' % (drive, cmd))
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def flatten_qmp_object(self, obj, output=None, basestr=''):
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if output is None:
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output = dict()
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if isinstance(obj, list):
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for i in range(len(obj)):
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self.flatten_qmp_object(obj[i], output, basestr + str(i) + '.')
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elif isinstance(obj, dict):
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for key in obj:
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self.flatten_qmp_object(obj[key], output, basestr + key + '.')
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else:
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output[basestr[:-1]] = obj # Strip trailing '.'
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return output
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def qmp_to_opts(self, obj):
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obj = self.flatten_qmp_object(obj)
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output_list = list()
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for key in obj:
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output_list += [key + '=' + obj[key]]
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return ','.join(output_list)
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index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
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class QMPTestCase(unittest.TestCase):
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'''Abstract base class for QMP test cases'''
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def dictpath(self, d, path):
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'''Traverse a path in a nested dict'''
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for component in path.split('/'):
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m = index_re.match(component)
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if m:
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component, idx = m.groups()
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idx = int(idx)
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if not isinstance(d, dict) or component not in d:
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self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
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d = d[component]
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if m:
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if not isinstance(d, list):
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self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
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try:
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d = d[idx]
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except IndexError:
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self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
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return d
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def assert_qmp_absent(self, d, path):
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try:
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result = self.dictpath(d, path)
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except AssertionError:
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return
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self.fail('path "%s" has value "%s"' % (path, str(result)))
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def assert_qmp(self, d, path, value):
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'''Assert that the value for a specific path in a QMP dict matches'''
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result = self.dictpath(d, path)
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self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value)))
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def assert_no_active_block_jobs(self):
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result = self.vm.qmp('query-block-jobs')
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self.assert_qmp(result, 'return', [])
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def assert_has_block_node(self, node_name=None, file_name=None):
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"""Issue a query-named-block-nodes and assert node_name and/or
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file_name is present in the result"""
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def check_equal_or_none(a, b):
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return a == None or b == None or a == b
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assert node_name or file_name
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result = self.vm.qmp('query-named-block-nodes')
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for x in result["return"]:
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if check_equal_or_none(x.get("node-name"), node_name) and \
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check_equal_or_none(x.get("file"), file_name):
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return
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self.assertTrue(False, "Cannot find %s %s in result:\n%s" % \
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(node_name, file_name, result))
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def assert_json_filename_equal(self, json_filename, reference):
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'''Asserts that the given filename is a json: filename and that its
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content is equal to the given reference object'''
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self.assertEqual(json_filename[:5], 'json:')
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self.assertEqual(self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
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self.vm.flatten_qmp_object(reference))
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def cancel_and_wait(self, drive='drive0', force=False, resume=False):
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'''Cancel a block job and wait for it to finish, returning the event'''
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result = self.vm.qmp('block-job-cancel', device=drive, force=force)
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self.assert_qmp(result, 'return', {})
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if resume:
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self.vm.resume_drive(drive)
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cancelled = False
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result = None
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while not cancelled:
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for event in self.vm.get_qmp_events(wait=True):
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if event['event'] == 'BLOCK_JOB_COMPLETED' or \
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event['event'] == 'BLOCK_JOB_CANCELLED':
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self.assert_qmp(event, 'data/device', drive)
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result = event
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cancelled = True
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elif event['event'] == 'JOB_STATUS_CHANGE':
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self.assert_qmp(event, 'data/id', drive)
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self.assert_no_active_block_jobs()
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return result
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def wait_until_completed(self, drive='drive0', check_offset=True):
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'''Wait for a block job to finish, returning the event'''
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while True:
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|
for event in self.vm.get_qmp_events(wait=True):
|
|
if event['event'] == 'BLOCK_JOB_COMPLETED':
|
|
self.assert_qmp(event, 'data/device', drive)
|
|
self.assert_qmp_absent(event, 'data/error')
|
|
if check_offset:
|
|
self.assert_qmp(event, 'data/offset', event['data']['len'])
|
|
self.assert_no_active_block_jobs()
|
|
return event
|
|
elif event['event'] == 'JOB_STATUS_CHANGE':
|
|
self.assert_qmp(event, 'data/id', drive)
|
|
|
|
def wait_ready(self, drive='drive0'):
|
|
'''Wait until a block job BLOCK_JOB_READY event'''
|
|
f = {'data': {'type': 'mirror', 'device': drive } }
|
|
event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f)
|
|
|
|
def wait_ready_and_cancel(self, drive='drive0'):
|
|
self.wait_ready(drive=drive)
|
|
event = self.cancel_and_wait(drive=drive)
|
|
self.assertEquals(event['event'], 'BLOCK_JOB_COMPLETED')
|
|
self.assert_qmp(event, 'data/type', 'mirror')
|
|
self.assert_qmp(event, 'data/offset', event['data']['len'])
|
|
|
|
def complete_and_wait(self, drive='drive0', wait_ready=True):
|
|
'''Complete a block job and wait for it to finish'''
|
|
if wait_ready:
|
|
self.wait_ready(drive=drive)
|
|
|
|
result = self.vm.qmp('block-job-complete', device=drive)
|
|
self.assert_qmp(result, 'return', {})
|
|
|
|
event = self.wait_until_completed(drive=drive)
|
|
self.assert_qmp(event, 'data/type', 'mirror')
|
|
|
|
def pause_wait(self, job_id='job0'):
|
|
with Timeout(1, "Timeout waiting for job to pause"):
|
|
while True:
|
|
result = self.vm.qmp('query-block-jobs')
|
|
for job in result['return']:
|
|
if job['device'] == job_id and job['paused'] == True and job['busy'] == False:
|
|
return job
|
|
|
|
def pause_job(self, job_id='job0', wait=True):
|
|
result = self.vm.qmp('block-job-pause', device=job_id)
|
|
self.assert_qmp(result, 'return', {})
|
|
if wait:
|
|
return self.pause_wait(job_id)
|
|
return result
|
|
|
|
|
|
def notrun(reason):
|
|
'''Skip this test suite'''
|
|
# Each test in qemu-iotests has a number ("seq")
|
|
seq = os.path.basename(sys.argv[0])
|
|
|
|
open('%s/%s.notrun' % (output_dir, seq), 'wb').write(reason + '\n')
|
|
print '%s not run: %s' % (seq, reason)
|
|
sys.exit(0)
|
|
|
|
def verify_image_format(supported_fmts=[], unsupported_fmts=[]):
|
|
assert not (supported_fmts and unsupported_fmts)
|
|
|
|
if 'generic' in supported_fmts and \
|
|
os.environ.get('IMGFMT_GENERIC', 'true') == 'true':
|
|
# similar to
|
|
# _supported_fmt generic
|
|
# for bash tests
|
|
return
|
|
|
|
not_sup = supported_fmts and (imgfmt not in supported_fmts)
|
|
if not_sup or (imgfmt in unsupported_fmts):
|
|
notrun('not suitable for this image format: %s' % imgfmt)
|
|
|
|
def verify_platform(supported_oses=['linux']):
|
|
if True not in [sys.platform.startswith(x) for x in supported_oses]:
|
|
notrun('not suitable for this OS: %s' % sys.platform)
|
|
|
|
def verify_cache_mode(supported_cache_modes=[]):
|
|
if supported_cache_modes and (cachemode not in supported_cache_modes):
|
|
notrun('not suitable for this cache mode: %s' % cachemode)
|
|
|
|
def supports_quorum():
|
|
return 'quorum' in qemu_img_pipe('--help')
|
|
|
|
def verify_quorum():
|
|
'''Skip test suite if quorum support is not available'''
|
|
if not supports_quorum():
|
|
notrun('quorum support missing')
|
|
|
|
def main(supported_fmts=[], supported_oses=['linux'], supported_cache_modes=[],
|
|
unsupported_fmts=[]):
|
|
'''Run tests'''
|
|
|
|
global debug
|
|
|
|
# We are using TEST_DIR and QEMU_DEFAULT_MACHINE as proxies to
|
|
# indicate that we're not being run via "check". There may be
|
|
# other things set up by "check" that individual test cases rely
|
|
# on.
|
|
if test_dir is None or qemu_default_machine is None:
|
|
sys.stderr.write('Please run this test via the "check" script\n')
|
|
sys.exit(os.EX_USAGE)
|
|
|
|
debug = '-d' in sys.argv
|
|
verbosity = 1
|
|
verify_image_format(supported_fmts, unsupported_fmts)
|
|
verify_platform(supported_oses)
|
|
verify_cache_mode(supported_cache_modes)
|
|
|
|
# We need to filter out the time taken from the output so that qemu-iotest
|
|
# can reliably diff the results against master output.
|
|
import StringIO
|
|
if debug:
|
|
output = sys.stdout
|
|
verbosity = 2
|
|
sys.argv.remove('-d')
|
|
else:
|
|
output = StringIO.StringIO()
|
|
|
|
logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))
|
|
|
|
class MyTestRunner(unittest.TextTestRunner):
|
|
def __init__(self, stream=output, descriptions=True, verbosity=verbosity):
|
|
unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity)
|
|
|
|
# unittest.main() will use sys.exit() so expect a SystemExit exception
|
|
try:
|
|
unittest.main(testRunner=MyTestRunner)
|
|
finally:
|
|
if not debug:
|
|
sys.stderr.write(re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', output.getvalue()))
|