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How to use iscsi_logout method in autotest

Best Python code snippet using autotest_python

iscsi.py

Source:iscsi.py

...44    target_login = ""45    if "successful" in output:46        target_login = target_name47    return target_login48def iscsi_logout(target_name=None):49    """50    Logout from a target. If the target name is not set then logout all51    targets.52    :params target_name: Name of the target.53    """54    if target_name:55        cmd = "iscsiadm --mode node --logout -T %s" % target_name56    else:57        cmd = "iscsiadm --mode node --logout all"58    output = utils.system_output(cmd)59    target_logout = ""60    if "successful" in output:61        target_logout = target_name62    return target_logout63def iscsi_discover(portal_ip):64    """65    Query from iscsi server for available targets66    :param portal_ip: Ip for iscsi server67    """68    cmd = "iscsiadm -m discovery -t sendtargets -p %s" % portal_ip69    output = utils.system_output(cmd, ignore_status=True)70    session = ""71    if "Invalid" in output:72        logging.debug(output)73    else:74        session = output75    return session76class Iscsi(object):77    """78    Basic iscsi support class. Will handle the emulated iscsi export and79    access to both real iscsi and emulated iscsi device.80    """81    def __init__(self, params, root_dir="/tmp"):82        os_dep.command("iscsiadm")83        self.target = params.get("target")84        self.export_flag = False85        if params.get("portal_ip"):86            self.portal_ip = params.get("portal_ip")87        else:88            self.portal_ip = utils.system_output("hostname")89        if params.get("iscsi_thread_id"):90            self.id = params.get("iscsi_thread_id")91        else:92            self.id = utils.generate_random_string(4)93        self.initiator = params.get("initiator")94        if params.get("emulated_image"):95            self.initiator = None96            os_dep.command("tgtadm")97            emulated_image = params.get("emulated_image")98            self.emulated_image = os.path.join(root_dir, emulated_image)99            self.emulated_id = ""100            self.emulated_size = params.get("image_size")101            self.unit = self.emulated_size[-1].upper()102            self.emulated_size = self.emulated_size[:-1]103            # maps K,M,G,T => (count, bs)104            emulated_size = {'K': (1, 1),105                             'M': (1, 1024),106                             'G': (1024, 1024),107                             'T': (1024, 1048576),108                             }109            if self.unit in emulated_size:110                block_size = emulated_size[self.unit][1]111                size = int(self.emulated_size) * emulated_size[self.unit][0]112                self.create_cmd = ("dd if=/dev/zero of=%s count=%s bs=%sK"113                                   % (self.emulated_image, size, block_size))114    def logged_in(self):115        """116        Check if the session is login or not.117        """118        sessions = iscsi_get_sessions()119        login = False120        if self.target in map(lambda x: x[1], sessions):121            login = True122        return login123    def portal_visible(self):124        """125        Check if the portal can be found or not.126        """127        return bool(re.findall("%s$" % self.target,128                               iscsi_discover(self.portal_ip), re.M))129    def login(self):130        """131        Login session for both real iscsi device and emulated iscsi. Include132        env check and setup.133        """134        login_flag = False135        if self.portal_visible():136            login_flag = True137        elif self.initiator:138            logging.debug("Try to update iscsi initiatorname")139            cmd = "mv /etc/iscsi/initiatorname.iscsi "140            cmd += "/etc/iscsi/initiatorname.iscsi-%s" % self.id141            utils.system(cmd)142            fd = open("/etc/iscsi/initiatorname.iscsi", 'w')143            fd.write("InitiatorName=%s" % self.initiator)144            fd.close()145            utils.system("service iscsid restart")146            if self.portal_visible():147                login_flag = True148        elif self.emulated_image:149            self.export_target()150            utils.system("service iscsid restart")151            if self.portal_visible():152                login_flag = True153        if login_flag:154            iscsi_login(self.target)155    def get_device_name(self):156        """157        Get device name from the target name.158        """159        cmd = "iscsiadm -m session -P 3"160        device_name = ""161        if self.logged_in():162            output = utils.system_output(cmd)163            pattern = r"Target:\s+%s.*?disk\s(\w+)\s+\S+\srunning" % self.target164            device_name = re.findall(pattern, output, re.S)165            try:166                device_name = "/dev/%s" % device_name[0]167            except IndexError:168                logging.error("Can not find target '%s' after login.", self.target)169        else:170            logging.error("Session is not logged in yet.")171        return device_name172    def get_target_id(self):173        """174        Get target id from image name. Only works for emulated iscsi device175        """176        cmd = "tgtadm --lld iscsi --mode target --op show"177        target_info = utils.system_output(cmd)178        target_id = ""179        for line in re.split("\n", target_info):180            if re.findall("Target\s+(\d+)", line):181                target_id = re.findall("Target\s+(\d+)", line)[0]182            if re.findall("Backing store path:\s+(/+.+)", line):183                if self.emulated_image in line:184                    break185        else:186            target_id = ""187        return target_id188    def export_target(self):189        """190        Export target in localhost for emulated iscsi191        """192        if not os.path.isfile(self.emulated_image):193            utils.system(self.create_cmd)194        cmd = "tgtadm --lld iscsi --mode target --op show"195        try:196            output = utils.system_output(cmd)197        except error.CmdError:198            utils.system("service tgtd restart")199            output = utils.system_output(cmd)200        if not re.findall("%s$" % self.target, output, re.M):201            logging.debug("Need to export target in host")202            output = utils.system_output(cmd)203            used_id = re.findall("Target\s+(\d+)", output)204            emulated_id = 1205            while str(emulated_id) in used_id:206                emulated_id += 1207            self.emulated_id = str(emulated_id)208            cmd = "tgtadm --mode target --op new --tid %s" % self.emulated_id209            cmd += " --lld iscsi --targetname %s" % self.target210            utils.system(cmd)211            cmd = "tgtadm --lld iscsi --op bind --mode target "212            cmd += "--tid %s -I ALL" % self.emulated_id213            utils.system(cmd)214        else:215            target_strs = re.findall("Target\s+(\d+):\s+%s$" %216                                     self.target, output, re.M)217            self.emulated_id = target_strs[0].split(':')[0].split()[-1]218        cmd = "tgtadm --lld iscsi --mode target --op show"219        try:220            output = utils.system_output(cmd)221        except error.CmdError:   # In case service stopped222            utils.system("service tgtd restart")223            output = utils.system_output(cmd)224        # Create a LUN with emulated image225        if re.findall(self.emulated_image, output, re.M):226            # Exist already227            logging.debug("Exported image already exists.")228            self.export_flag = True229            return230        else:231            luns = len(re.findall("\s+LUN:\s(\d+)", output, re.M))232            cmd = "tgtadm --mode logicalunit --op new "233            cmd += "--tid %s --lld iscsi " % self.emulated_id234            cmd += "--lun %s " % luns235            cmd += "--backing-store %s" % self.emulated_image236            utils.system(cmd)237            self.export_flag = True238    def delete_target(self):239        """240        Delete target from host.241        """242        cmd = "tgtadm --lld iscsi --mode target --op show"243        output = utils.system_output(cmd)244        if re.findall("%s$" % self.target, output, re.M):245            if self.emulated_id:246                cmd = "tgtadm --lld iscsi --mode target --op delete "247                cmd += "--tid %s" % self.emulated_id248                utils.system(cmd)249    def logout(self):250        """251        Logout from target.252        """253        if self.logged_in():254            iscsi_logout(self.target)255    def cleanup(self):256        """257        Clean up env after iscsi used.258        """259        self.logout()260        if os.path.isfile("/etc/iscsi/initiatorname.iscsi-%s" % self.id):261            cmd = " mv /etc/iscsi/initiatorname.iscsi-%s" % self.id262            cmd += " /etc/iscsi/initiatorname.iscsi"263            utils.system(cmd)264            cmd = "service iscsid restart"265            utils.system(cmd)266        if self.export_flag:...

tests.py

Source:tests.py

...62    def setUp(self):63        if Global.debug or Global.verbosity > 1:64            # this makes debug printing a little more clean65            print('', file=sys.stderr)66    def iscsi_logout(self):67        res = util.run_cmd(['iscsiadm', '-m', 'node',68                            '-T', Global.target,69                            '-p', Global.ipnr,70                            '--logout'])71        if res not in [0, 21]:72            self.fail('logout failed')73        self.assertFalse(os.path.exists(Global.device), '%s: exists after logout!' % Global.device)74    def test_InitialR2T_on_ImmediateData_off(self):75        """Test Initial Request to Transmit on, but Immediate Data off"""76        i = 177        for v in self.param_values:78            with self.subTest('Testing FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v), i=i):79                if i not in Global.subtest_list:80                    util.vprint('Skipping subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)81                else:82                    util.vprint('Running subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)83                    self.iscsi_logout()84                    iscsi_data = IscsiData('No', 'Yes', 'None', 'None', v[0], v[1], v[2])85                    iscsi_data.update_cfg(Global.target, Global.ipnr)86                    self.run_the_rest()87            i += 188    def test_InitialR2T_off_ImmediateData_on(self):89        """Test Initial Request to Transmit off, Immediate Data on"""90        i = 191        for v in self.param_values:92            with self.subTest('Testing FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v), i=i):93                if i not in Global.subtest_list:94                    util.vprint('Skipping subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)95                else:96                    util.vprint('Running subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)97                    self.iscsi_logout()98                    iscsi_data = IscsiData('Yes', 'No', 'None', 'None', v[0], v[1], v[2])99                    iscsi_data.update_cfg(Global.target, Global.ipnr)100                    self.run_the_rest()101            i += 1102    def test_InitialR2T_on_ImmediateData_on(self):103        """Test Initial Request to Transmit and Immediate Data on"""104        i = 1105        for v in self.param_values:106            with self.subTest('Testing FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v), i=i):107                if i not in Global.subtest_list:108                    util.vprint('Skipping subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)109                else:110                    util.vprint('Running subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)111                    self.iscsi_logout()112                    iscsi_data = IscsiData('Yes', 'Yes', 'None', 'None', v[0], v[1], v[2])113                    iscsi_data.update_cfg(Global.target, Global.ipnr)114                    self.run_the_rest()115            i += 1116    def test_InitialR2T_off_ImmediateData_off(self):117        """Test Initial Request to Transmit and Immediate Data off"""118        i = 1119        for v in self.param_values:120            with self.subTest('Testing FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v), i=i):121                if i not in Global.subtest_list:122                    util.vprint('Skipping subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)123                else:124                    util.vprint('Running subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)125                    self.iscsi_logout()126                    iscsi_data = IscsiData('No', 'No', 'None', 'None', v[0], v[1], v[2])127                    iscsi_data.update_cfg(Global.target, Global.ipnr)128                    self.run_the_rest()129            i += 1130    def test_HdrDigest_on_DataDigest_off(self):131        """Test With Header Digest"""132        i = 1133        for v in self.param_values:134            with self.subTest('Testing FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v), i=i):135                if i not in Global.subtest_list:136                    util.vprint('Skipping subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)137                else:138                    util.vprint('Running subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)139                    self.iscsi_logout()140                    iscsi_data = IscsiData('No', 'Yes', 'CRC32C', 'None', v[0], v[1], v[2])141                    iscsi_data.update_cfg(Global.target, Global.ipnr)142                    self.run_the_rest()143            i += 1144    def test_HdrDigest_on_DataDigest_on(self):145        """Test With Header Digest"""146        i = 1147        for v in self.param_values:148            with self.subTest('Testing FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v), i=i):149                if i not in Global.subtest_list:150                    util.vprint('Skipping subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)151                else:152                    util.vprint('Running subtest %d: FirstBurst={} MaxBurst={} MaxRecv={}'.format(*v) % i)153                    self.iscsi_logout()154                    iscsi_data = IscsiData('No', 'Yes', 'CRC32C', 'CRC32C', v[0], v[1], v[2])155                    iscsi_data.update_cfg(Global.target, Global.ipnr)156                    self.run_the_rest()157            i += 1158    def run_the_rest(self):159        res = util.run_cmd(['iscsiadm', '-m', 'node',160                            '-T', Global.target,161                            '-p', Global.ipnr,162                            '--login'])163        self.assertEqual(res, 0, 'cannot login to device')164        # wait a few seconds for the device to show up165        if not util.wait_for_path(Global.device):166            self.fail('%s: does not exist after login' % Global.device)167        # run parted to partition the disc with one whole disk partition...

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