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How to use collect_dmesg method in avocado

Best Python code snippet using avocado_python

ltp.py

Source:ltp.py

...25from avocado.utils.partition import Partition26from avocado.utils.software_manager import SoftwareManager27def clear_dmesg():28    process.run("dmesg -c ", sudo=True)29def collect_dmesg(obj):30    obj.whiteboard = process.system_output("dmesg").decode()31class LTP(Test):32    """33    LTP (Linux Test Project) testsuite34    :param args: Extra arguments ("runltp" can use with35                 "-f $test")36    """37    failed_tests = list()38    mem_tests = ['-f mm', '-f hugetlb']39    @staticmethod40    def mount_point(mount_dir):41        lines = genio.read_file('/proc/mounts').rstrip('\t\r\0').splitlines()42        for substr in lines:43            mop = substr.split(" ")[1]44            if mop == mount_dir:45                return True46        return False47    def check_thp(self):48        if 'thp_file_alloc' in genio.read_file('/proc/vm'49                                               'stat').rstrip('\t\r\n\0'):50            self.thp = True51        return self.thp52    def setup_tmpfs_dir(self):53        # check for THP page cache54        self.check_thp()55        if not os.path.isdir(self.mount_dir):56            os.makedirs(self.mount_dir)57        self.device = None58        if not self.mount_point(self.mount_dir):59            if self.thp:60                self.device = Partition(61                    device="none", mountpoint=self.mount_dir,62                    mount_options="huge=always")63            else:64                self.device = Partition(65                    device="none", mountpoint=self.mount_dir)66            self.device.mount(mountpoint=self.mount_dir,67                              fstype="tmpfs", mnt_check=False)68    def setUp(self):69        smg = SoftwareManager()70        dist = distro.detect()71        self.args = self.params.get('args', default='')72        self.mem_leak = self.params.get('mem_leak', default=0)73        deps = ['gcc', 'make', 'automake', 'autoconf', 'psmisc']74        deps.extend(['numactl-devel'])75        self.ltpbin_dir = self.mount_dir = None76        self.thp = False77        if self.args in self.mem_tests:78            self.mount_dir = self.params.get('tmpfs_mount_dir', default=None)79            if self.mount_dir:80                self.setup_tmpfs_dir()81            over_commit = self.params.get('overcommit', default=True)82            if not over_commit:83                process.run('echo 2 > /proc/sys/vm/overcommit_memory',84                            shell=True, ignore_status=True)85        for package in deps:86            if not smg.check_installed(package) and not smg.install(package):87                self.cancel('%s is needed for the test to be run' % package)88        clear_dmesg()89        self.tmppart = Partition("/dev/vdb", mountpoint="/var/tmp")90        mounted_devs = [line.split()[0]91                   for line in process.getoutput('mount').splitlines()]92        if self.tmppart.device not in mounted_devs:93            self.tmppart.mkfs(fstype="ext4")94            self.tmppart.mount()95        #url = "https://github.com/linux-test-project/ltp/archive/master.zip"96        #tarball = self.fetch_asset("ltp-master.zip", locations=[url])97        tarball = self.get_data("ltp-full-20210927.tar.bz2")98        archive.extract(tarball, self.teststmpdir)99        self.version = os.path.basename(tarball.split('.tar.')[0])100        ltp_dir = os.path.join(self.teststmpdir, self.version)101        os.chdir(ltp_dir)102        build.make(ltp_dir, extra_args='autotools')103        if not self.ltpbin_dir:104            self.ltpbin_dir = os.path.join(self.teststmpdir, 'bin')105        # if not os.path.exists(self.ltpbin_dir):106            # os.mkdir(self.ltpbin_dir)107        os.makedirs(self.ltpbin_dir, exist_ok=True)108        process.system('./configure --prefix=%s' % self.ltpbin_dir)109        build.make(ltp_dir)110        build.make(ltp_dir, extra_args='install')111    def test(self):112        logfile = os.path.join(self.logdir, 'ltp.log')113        failcmdfile = os.path.join(self.logdir, 'failcmdfile')114        skipfilepath = self.get_data('skipfile')115        os.chmod(self.teststmpdir, 0o755)116        self.args += (" -q -p -l %s -C %s -d %s -S %s"117                      % (logfile, failcmdfile, self.teststmpdir,118                         skipfilepath))119        if self.mem_leak:120            self.args += " -M %s" % self.mem_leak121        cmd = "%s %s" % (os.path.join(self.ltpbin_dir, 'runltp'), self.args)122        process.run(cmd, ignore_status=True)123        # Walk the ltp.log and try detect failed tests from lines like these:124        # msgctl04                                           FAIL       2125        with open(logfile, 'r') as file_p:126            lines = file_p.readlines()127            for line in lines:128                if 'FAIL' in line:129                    value = re.split(r'\s+', line)130                    self.failed_tests.append(value[0])131        collect_dmesg(self)132        if self.failed_tests:133            self.fail("LTP tests failed: %s" % self.failed_tests)134    def tearDown(self):135        if self.mount_dir:...

dmesg.py

Source:dmesg.py

...31                            verbose=False, shell=True, sudo=True)32    if status:33        raise DmesgError(34            "Unable to clear dmesg as some issue while clearing")35def collect_dmesg(output_file=None):36    """Function collect dmesg and save in file.37    The dmesg operation is a privileged user task.38    This function needs sudo permissions enabled on the target host39    :param output_file : File use for save dmesg output if not provided it use40                        tmp file which located in system  /tmp path41    :type output_file: str42    :return: file which contain dmesg43    :rtype: str44    """45    if output_file is None:46        _, output_file = tempfile.mkstemp(suffix=".-%s" % time.strftime("%Y-%m-%d:%H:%M:%S"),47                                          dir=tempfile.gettempdir())48    dmesg = process.system_output(49        "dmesg", ignore_status=True, sudo=True).decode()50    genio.write_file(output_file, dmesg)51    if not os.path.isfile(output_file):52        raise DmesgError("{} is not a valid file.".format(output_file))53    return output_file54def collect_errors_dmesg(patterns):55    """Check patterns in dmesg.56    :param patterns  :  List variable to search in dmesg57    :return error log in form of list58    :rtype: list of str59    """60    error = []61    dmesg_log_file = collect_dmesg(None)62    for fail_pattern in patterns:63        for log in genio.read_file(dmesg_log_file).splitlines():64            if fail_pattern in log:65                error.append(log)66    return error67def collect_errors_by_level(output_file=None, level_check=5):68    """Verify dmesg having severity level of OS issue(s).69    :param output_file: The file used to save dmesg70    :type output_file: str71    :param level_check: level of severity of issues to be checked72                        1 - emerg73                        2 - emerg,alert74                        3 - emerg,alert,crit75                        4 - emerg,alert,crit,err...

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