#!/usr/bin/env python
import io
import sys
import random
import signal
import subprocess
import pprint
import socket

from errno import ESRCH
from os import kill, path, unlink, path, listdir, remove
from rpc_commands_lib import Commands_Rpc
from time import sleep
from uuid import uuid4


def test_counter():
    '''
    :return: the number of tests
    '''
    return 24


def header(num):
    test_name = {
        1: 'construct_lvs_positive',
        2: 'construct_logical_volume_positive',
        3: 'construct_multi_logical_volumes_positive',
        4: 'construct_lvol_bdev_using_name_positive',
        5: 'construct_lvol_bdev_duplicate_names_positive',
        6: 'resize_lvol_bdev_positive',
        7: 'destroy_lvol_store_positive',
        8: 'destroy_lvol_store_use_name_positive',
        9: 'destroy_lvol_store_with_lvol_bdev_positive',
        10: 'destroy_multi_logical_volumes_positive',
        11: 'nested_construct_logical_volume_positive',
        12: 'destroy_after_resize_lvol_bdev_positive',
        13: 'construct_lvs_nonexistent_bdev',
        14: 'construct_lvs_on_bdev_twice',
        15: 'construct_lvs_name_twice',
        16: 'construct_logical_volume_nonexistent_lvs_uuid',
        17: 'construct_lvol_bdev_on_full_lvol_store',
        18: 'construct_lvol_bdev_name_twice',
        19: 'resize_logical_volume_nonexistent_logical_volume',
        20: 'resize_logical_volume_with_size_out_of_range',
        21: 'destroy_lvol_store_nonexistent_lvs_uuid',
        22: 'delete_lvol_store_underlying_bdev',
        23: 'nested_construct_lvol_bdev_on_full_lvol_store',
        24: 'nested_destroy_logical_volume_negative',
        25: 'delete_bdev_positive',
        26: 'construct_lvol_store_with_cluster_size_max',
        27: 'construct_lvol_store_with_cluster_size_min',
        28: 'tasting_positive',
        29: 'SIGTERM',
    }
    print("========================================================")
    print("Test Case {num}: Start".format(num=num))
    print("Test Name: {name}".format(name=test_name[num]))
    print("========================================================")

def footer(num):
    print("Test Case {num}: END\n".format(num=num))
    print("========================================================")

class TestCases(object):

    def __init__(self, rpc_py, total_size, block_size, cluster_size, base_dir_path, app_path):
        self.c = Commands_Rpc(rpc_py)
        self.total_size = total_size
        self.block_size = block_size
        self.cluster_size = cluster_size
        self.path = base_dir_path
        self.app_path = app_path
        self.lvs_name = "lvs_test"
        self.lbd_name = "lbd_test"

    def _gen_lvs_uudi(self):
        return str(uuid4())

    def _gen_lvb_uudi(self):
        return "_".join([str(uuid4()), str(random.randrange(9999999999))])

    def _stop_vhost(self, pid_path):
        with io.open(pid_path, 'r') as vhost_pid:
            pid = int(vhost_pid.readline())
            if pid:
                try:
                    kill(pid, signal.SIGTERM)
                    for count in range(30):
                        sleep(1)
                        kill(pid, 0)
                except OSError, err:
                    if err.errno == ESRCH:
                        pass
                    else:
                        return 1
                else:
                    return 1
            else:
                return 1
        return 0

    def _start_vhost(self, vhost_path, config_path, pid_path):
        subprocess.call("{app} -c {config} -f "
                        "{pid} &".format(app=vhost_path,
                                         config=config_path,
                                         pid=pid_path), shell=True)
        for timeo in range(10):
            if timeo == 9:
                print("ERROR: Timeout on waiting for app start")
                return 1
            if not path.exists(pid_path):
                print("Info: Waiting for PID file...")
                sleep(1)
                continue
            else:
                break

        # Wait for RPC to open
        sock = socket.socket(socket.AF_UNIX)
        for timeo in range(30):
            if timeo == 29:
                print("ERROR: Timeout on waiting for RPC start")
                return 1
            try:
                sock.connect("/var/tmp/spdk.sock")
                break
            except socket.error as e:
                print("Info: Waiting for RPC Unix socket...")
                sleep(1)
                continue
            else:
                sock.close()
                break

        with io.open(pid_path, 'r') as vhost_pid:
            pid = int(vhost_pid.readline())
            if not pid:
                return 1
        return 0

    # positive tests
    def test_case1(self):
        header(1)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        fail_count += self.c.check_get_lvol_stores("", "", "")
        footer(1)
        return fail_count

    def test_case2(self):
        header(2)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size - 1)
        self.c.delete_bdev(uuid_bdev)
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(2)
        return fail_count

    def test_case3(self):
        header(3)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        size = ((self.total_size - 1) / 4)

        uuid_bdevs = []
        for i in range(4):
            uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                                   self.lbd_name + str(i),
                                                   size)
            uuid_bdevs.append(uuid_bdev)
            fail_count += self.c.check_get_bdevs_methods(uuid_bdev, size)

        for uuid_bdev in uuid_bdevs:
            self.c.delete_bdev(uuid_bdev)

        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(3)
        return fail_count

    def test_case4(self):
        header(4)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)

        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)

        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)

        uuid_bdev = self.c.construct_lvol_bdev(self.lvs_name,
                                               self.lbd_name,
                                               self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size - 1)

        fail_count += self.c.delete_bdev(uuid_bdev)
        fail_count += self.c.destroy_lvol_store(uuid_store)
        fail_count += self.c.delete_bdev(base_name)
        footer(4)
        return fail_count

    def test_case5(self):
        header(5)
        base_name_1 = self.c.construct_malloc_bdev(self.total_size,
                                                   self.block_size)
        base_name_2 = self.c.construct_malloc_bdev(self.total_size,
                                                   self.block_size)

        uuid_store_1 = self.c.construct_lvol_store(base_name_1,
                                                   self.lvs_name + "1",
                                                   self.cluster_size)
        uuid_store_2 = self.c.construct_lvol_store(base_name_2,
                                                   self.lvs_name + "2",
                                                   self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name_1, uuid_store_1,
                                                  self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name_2, uuid_store_2,
                                                  self.cluster_size)

        uuid_bdev_1 = self.c.construct_lvol_bdev(uuid_store_1,
                                                 self.lbd_name,
                                                 self.total_size - 1)
        uuid_bdev_2 = self.c.construct_lvol_bdev(uuid_store_2,
                                                 self.lbd_name,
                                                 self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev_1, self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev_2, self.total_size - 1)

        fail_count += self.c.delete_bdev(uuid_bdev_1)
        fail_count += self.c.delete_bdev(uuid_bdev_2)
        fail_count += self.c.destroy_lvol_store(uuid_store_1)
        fail_count += self.c.destroy_lvol_store(uuid_store_2)
        fail_count += self.c.delete_bdev(base_name_1)
        fail_count += self.c.delete_bdev(base_name_2)
        footer(5)
        return fail_count

    def test_case6(self):
        header(6)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        # size is equal to one quarter of size malloc bdev
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               self.total_size / 4)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size / 4)
        # size is equal to half  of size malloc bdev
        self.c.resize_lvol_bdev(uuid_bdev, self.total_size / 2)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size / 2)
        # size is smaller by 1 MB
        self.c.resize_lvol_bdev(uuid_bdev, self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size - 1)
        # size is equal 0 MiB
        self.c.resize_lvol_bdev(uuid_bdev, 0)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev, 0)

        self.c.delete_bdev(uuid_bdev)
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(6)
        return fail_count

    def test_case7(self):
        header(7)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        self.c.destroy_lvol_store(uuid_store)
        fail_count += self.c.check_get_lvol_stores("", "", "")
        self.c.delete_bdev(base_name)
        footer(7)
        return fail_count

    def test_case8(self):
        header(8)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        fail_count += self.c.destroy_lvol_store(self.lvs_name)
        fail_count += self.c.check_get_lvol_stores("", "", "")
        fail_count += self.c.delete_bdev(base_name)
        footer(8)
        return fail_count

    def test_case9(self):
        header(9)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size - 1)
        if self.c.destroy_lvol_store(uuid_store) != 0:
            fail_count += 1

        fail_count += self.c.check_get_lvol_stores("", "", "")
        self.c.delete_bdev(base_name)
        footer(9)
        return fail_count

    def test_case10(self):
        header(10)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        size = ((self.total_size - 1) / 4)

        for i in range(4):
            uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                                   self.lbd_name + str(i),
                                                   size)
            fail_count += self.c.check_get_bdevs_methods(uuid_bdev, size)

        self.c.destroy_lvol_store(uuid_store)
        fail_count += self.c.check_get_lvol_stores("", "", "")
        self.c.delete_bdev(base_name)
        footer(10)
        return fail_count

    def test_case11(self):
        print("Test of this feature not yet implemented.")
        pass
        return 0

    def test_case12(self):
        header(12)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        size = ((self.total_size - 1) / 4)
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               size)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     size)

        # TODO: Improve resize_lvol_bdev tests to verify if bdev was actually
        # correctly resized
        fail_count += self.c.resize_lvol_bdev(uuid_bdev, size + 1)
        fail_count += self.c.resize_lvol_bdev(uuid_bdev, size * 2)
        fail_count += self.c.resize_lvol_bdev(uuid_bdev, size * 3)
        fail_count += self.c.resize_lvol_bdev(uuid_bdev, (size * 4) - 1)
        fail_count += self.c.resize_lvol_bdev(uuid_bdev, 0)

        self.c.destroy_lvol_store(uuid_store)
        fail_count += self.c.check_get_lvol_stores("", "", "")
        self.c.delete_bdev(base_name)
        footer(12)
        return fail_count

    # negative tests
    def test_case13(self):
        header(13)
        fail_count = 0
        bad_bdev_id = random.randrange(999999999)
        if self.c.construct_lvol_store(bad_bdev_id,
                                       self.lvs_name,
                                       self.cluster_size) == 0:
            fail_count += 1
        footer(13)
        return fail_count

    def test_case14(self):
        header(14)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        if self.c.construct_lvol_store(base_name,
                                       self.lvs_name,
                                       self.cluster_size) == 0:
            fail_count += 1
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(14)
        return fail_count

    def test_case15(self):
        header(15)
        fail_count = 0
        base_name_1 = self.c.construct_malloc_bdev(self.total_size,
                                                   self.block_size)
        base_name_2 = self.c.construct_malloc_bdev(self.total_size,
                                                   self.block_size)
        uuid_store_1 = self.c.construct_lvol_store(base_name_1,
                                                   self.lvs_name,
                                                   self.cluster_size)
        fail_count += self.c.check_get_lvol_stores(base_name_1,
                                                   uuid_store_1,
                                                   self.cluster_size)
        if self.c.construct_lvol_store(base_name_2,
                                       self.lvs_name,
                                       self.cluster_size) == 0:
            fail_count += 1

        fail_count += self.c.destroy_lvol_store(uuid_store_1)
        fail_count += self.c.delete_bdev(base_name_1)
        fail_count += self.c.delete_bdev(base_name_2)

        footer(15)
        return fail_count

    def test_case16(self):
        header(16)
        fail_count = 0
        if self.c.construct_lvol_bdev(self._gen_lvs_uudi(),
                                      self.lbd_name,
                                      32) == 0:
            fail_count += 1
        footer(16)
        return fail_count

    def test_case17(self):
        header(17)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size - 1)
        if self.c.construct_lvol_bdev(uuid_store,
                                      self.lbd_name + "_1",
                                      self.total_size - 1) == 0:
            fail_count += 1

        self.c.delete_bdev(uuid_bdev)
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(17)
        return fail_count

    def test_case18(self):
        header(18)
        size = (self.total_size / 2) - 1
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               size)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     size)
        if self.c.construct_lvol_bdev(uuid_store,
                                      self.lbd_name,
                                      size) == 0:
            fail_count += 1

        self.c.delete_bdev(uuid_bdev)
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(18)
        return fail_count

    def test_case19(self):
        header(19)
        fail_count = 0
        if self.c.resize_lvol_bdev(self._gen_lvb_uudi(), 16) == 0:
            fail_count += 1
        footer(19)
        return fail_count

    def test_case20(self):
        header(20)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                               self.lbd_name,
                                               self.total_size - 1)
        fail_count += self.c.check_get_bdevs_methods(uuid_bdev,
                                                     self.total_size - 1)
        if self.c.resize_lvol_bdev(uuid_bdev, self.total_size + 1) == 0:
            fail_count += 1

        self.c.delete_bdev(uuid_bdev)
        self.c.destroy_lvol_store(uuid_store)
        self.c.delete_bdev(base_name)
        footer(20)
        return fail_count

    def test_case21(self):
        header(21)
        fail_count = 0
        if self.c.destroy_lvol_store(self._gen_lvs_uudi()) == 0:
            fail_count += 1
        footer(21)
        return fail_count

    def test_case22(self):
        header(22)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)

        if self.c.delete_bdev(base_name) != 0:
            fail_count += 1

        if self.c.destroy_lvol_store(uuid_store) == 0:
            fail_count += 1

        footer(22)
        return fail_count

    def test_case23(self):
        print("Test of this feature not yet implemented.")
        pass
        return 0

    def test_case24(self):
        print("Test of this feature not yet implemented.")
        pass
        return 0

    def test_case25(self):
        header(25)
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)
        self.c.delete_bdev(base_name)
        fail_count += self.c.check_get_lvol_stores("", "", "")
        footer(25)
        return fail_count

    def test_case26(self):
        header(26)
        fail_count = 0
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        if self.c.construct_lvol_store(base_name,
                                       self.lvs_name,
                                       (self.total_size * 1024 * 1024) + 1) == 0:
            fail_count += 1
        footer(26)
        return fail_count

    def test_case27(self):
        header(27)
        fail_count = 0
        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        if self.c.construct_lvol_store(base_name,
                                       self.lvs_name, 0) == 0:
            fail_count += 1
        footer(27)
        return fail_count

    def test_case28(self):
        header(28)
        fail_count = 0
        uuid_bdevs = []
        base_name = "Nvme0n1"

        base_path = path.dirname(sys.argv[0])
        vhost_path = path.join(self.app_path, 'vhost')
        config_path = path.join(base_path, 'vhost.conf')
        pid_path = path.join(base_path, 'vhost.pid')

        # Create initial configuration on running vhost instance
        # create lvol store, create 5 bdevs
        # save info of all lvs and lvol bdevs
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count += self.c.check_get_lvol_stores(base_name,
                                                   uuid_store,
                                                   self.cluster_size)

        # size = approx 10% of total NVMe disk size
        _ = self.c.get_lvol_stores()[0]
        size = int(_["free_clusters"] / 10)

        for i in range(5):
            uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                                   self.lbd_name + str(i),
                                                   size)
            uuid_bdevs.append(uuid_bdev)
            fail_count += self.c.check_get_bdevs_methods(uuid_bdev, size)

        old_bdevs = sorted(self.c.get_lvol_bdevs(), key=lambda x: x["name"])
        old_stores = self.c.get_lvol_stores()

        # Shut down vhost instance and restart with new instance
        fail_count += self._stop_vhost(pid_path)
        remove(pid_path)
        if self._start_vhost(vhost_path, config_path, pid_path) != 0:
            fail_count += 1
            footer(28)
            return fail_count

        # Check if configuration was properly loaded after tasting
        # get all info all lvs and lvol bdevs, compare with previous info
        new_bdevs = sorted(self.c.get_lvol_bdevs(), key=lambda x: x["name"])
        new_stores = self.c.get_lvol_stores()

        if old_stores != new_stores:
            fail_count += 1
            print("ERROR: old and loaded lvol store is not the same")
            print("DIFF:")
            print(old_stores)
            print(new_stores)

        if len(old_bdevs) != len(new_bdevs):
            fail_count += 1
            print("ERROR: old and loaded lvol bdev list count is not equal")

        for o, n in zip(old_bdevs, new_bdevs):
            if o != n:
                fail_count += 1
                print("ERROR: old and loaded lvol bdev is not the same")
                print("DIFF:")
                pprint.pprint([o, n])

        if fail_count != 0:
            footer(28)
            return fail_count

        # Try modifying loaded configuration
        # Add some lvol bdevs to existing lvol store then
        # remove all lvol configuration and re-create it again
        for i in range(5, 10):
            uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                                   self.lbd_name + str(i),
                                                   size)
            uuid_bdevs.append(uuid_bdev)
            fail_count += self.c.check_get_bdevs_methods(uuid_bdev, size)

        for uuid_bdev in uuid_bdevs:
            self.c.delete_bdev(uuid_bdev)

        if self.c.destroy_lvol_store(uuid_store) != 0:
            fail_count += 1

        uuid_bdevs = []

        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count += self.c.check_get_lvol_stores(base_name,
                                                   uuid_store,
                                                   self.cluster_size)

        for i in range(10):
            uuid_bdev = self.c.construct_lvol_bdev(uuid_store,
                                                   self.lbd_name + str(i),
                                                   size)
            uuid_bdevs.append(uuid_bdev)
            fail_count += self.c.check_get_bdevs_methods(uuid_bdev, size)

        if self.c.destroy_lvol_store(uuid_store) != 0:
            fail_count += 1

        footer(28)
        return fail_count

    def test_case29(self):
        header(29)
        pid_path = path.join(self.path, 'vhost.pid')

        base_name = self.c.construct_malloc_bdev(self.total_size,
                                                 self.block_size)
        uuid_store = self.c.construct_lvol_store(base_name,
                                                 self.lvs_name,
                                                 self.cluster_size)
        fail_count = self.c.check_get_lvol_stores(base_name, uuid_store,
                                                  self.cluster_size)

        fail_count += self._stop_vhost(pid_path)
        footer(29)
        return fail_count