diff --git a/manila/post_test_hook.sh b/manila/post_test_hook.sh
index 4d3a2c6..f8f75f6 100755
--- a/manila/post_test_hook.sh
+++ b/manila/post_test_hook.sh
@@ -14,8 +14,65 @@
 
 # This script is executed inside post_test_hook function in devstack gate.
 
+# Backend configuration: singlebackend only, not used yet.
+MANILA_BACKEND_TYPE=${1:?}
+
+# Driver type: glusterfs, glusterfs-nfs, glusterfs-heketi,
+# glusterfs-nfs-heketi, glusterfs-native
+GLUSTERFS_MANILA_DRIVER_TYPE=${2:?}
+
+# Test type: api or scenario
+MANILA_TEST_TYPE=${3:?}
+
+if [[ $MANILA_TEST_TYPE == 'api' ]]; then
+    export MANILA_TESTS='manila_tempest_tests.tests.api'
+    export MANILA_TEMPEST_CONCURRENCY=12
+elif [[ $MANILA_TEST_TYPE == 'scenario' ]]; then
+    export MANILA_TESTS='manila_tempest_tests.tests.scenario'
+    export MANILA_TEMPEST_CONCURRENCY=8
+else
+    echo "Invalid MANILA_TEST_TYPE = ${MANILA_TEST_TYPE}"
+    exit 1
+fi
+
+case "$GLUSTERFS_MANILA_DRIVER_TYPE" in
+    glusterfs-native)
+        BACKEND_NAME="GLUSTERNATIVE"
+        ENABLE_PROTOCOLS="glusterfs"
+        STORAGE_PROTOCOL="glusterfs"
+        ENABLE_RO_ACCESS_LEVEL_FOR_PROTOCOLS=""
+        ENABLE_IP_RULES_FOR_PROTOCOLS=""
+        SHARE_ENABLE_CERT_RULES_FOR_PROTOCOLS="glusterfs"
+
+        CAPABILITY_SNAPSHOT_SUPPORT=True
+        CAPABILITY_CREATE_SHARE_FROM_SNAPSHOT_SUPPORT=True
+
+        RUN_MANILA_SNAPSHOT_TESTS=True
+        ;;
+    glusterfs|glusterfs-nfs)
+        BACKEND_NAME="GLUSTERFS"
+        ENABLE_PROTOCOLS="nfs"
+        STORAGE_PROTOCOL="NFS"
+        ENABLE_RO_ACCESS_LEVEL_FOR_PROTOCOLS=""
+        ENABLE_IP_RULES_FOR_PROTOCOLS="nfs"
+        SHARE_ENABLE_CERT_RULES_FOR_PROTOCOLS=""
+
+        RUN_MANILA_EXTEND_TESTS=True
+        RUN_MANILA_SHRINK_TESTS=True
+        ;;
+    glusterfs-heketi|glusterfs-nfs-heketi)
+        BACKEND_NAME="GLUSTERFSHEKETI"
+        # TODO: enable glusterfs-heketi ci
+        ;;
+    *)
+        echo "Invalid GLUSTERFS_MANILA_DRIVER_TYPE = \
+            ${GLUSTERFS_MANILA_DRIVER_TYPE}"
+        exit 1
+esac
+
 TEMPEST_CONFIG=$BASE/new/tempest/etc/tempest.conf
 
+# Start setup Tempest
 sudo chown -R $USER:stack $BASE/new/tempest
 sudo chown -R $USER:stack $BASE/data/tempest
 sudo chmod -R o+rx $BASE/new/devstack/files
@@ -28,107 +85,32 @@ for env_var in ${DEVSTACK_LOCAL_CONFIG// / }; do
     export $env_var;
 done
 
-# What backend configuration: singlebackend or multibackend
-MANILA_BACKEND_TYPE=$1
-MANILA_BACKEND_TYPE=${MANILA_BACKEND_TYPE:-singlebackend}
+iniset $TEMPEST_CONFIG share backend_names ${BACKEND_NAME:?}
+iniset $TEMPEST_CONFIG share enable_protocols ${ENABLE_PROTOCOLS:?}
+iniset $TEMPEST_CONFIG share storage_protocol ${STORAGE_PROTOCOL:?}
+iniset $TEMPEST_CONFIG share enable_ro_access_level_for_protocols \
+    ${ENABLE_RO_ACCESS_LEVEL_FOR_PROTOCOLS?}
+iniset $TEMPEST_CONFIG share enable_ip_rules_for_protocols \
+    ${ENABLE_IP_RULES_FOR_PROTOCOLS?}
+iniset $TEMPEST_CONFIG share enable_cert_rules_for_protocols \
+    ${SHARE_ENABLE_CERT_RULES_FOR_PROTOCOLS?}
 
-# What driver to test: glusterfs, glusterfs-nfs, glusterfs-heketi,
-# glusterfs-nfs-heketi, glusterfs-native
-GLUSTERFS_MANILA_DRIVER_TYPE=$2
-GLUSTERFS_MANILA_DRIVER_TYPE=${GLUSTERFS_MANILA_DRIVER_TYPE:-glusterfs-nfs}
+iniset $TEMPEST_CONFIG share capability_snapshot_support \
+    ${CAPABILITY_SNAPSHOT_SUPPORT:-False}
+iniset $TEMPEST_CONFIG share capability_create_share_from_snapshot_support \
+    ${CAPABILITY_CREATE_SHARE_FROM_SNAPSHOT_SUPPORT:-False}
 
-# What test to run: api or scenario
-MANILA_TEST_TYPE=$3
-MANILA_TEST_TYPE=${MANILA_TEST_TYPE:-api}
-
-if [[ "$GLUSTERFS_MANILA_DRIVER_TYPE" == "glusterfs-native" ]]; then
-    local BACKEND_NAME="GLUSTERNATIVE"
-    iniset $TEMPEST_CONFIG share enable_protocols glusterfs
-    iniset $TEMPEST_CONFIG share storage_protocol glusterfs
-    # Disable tempest config option that enables creation of 'ip' type access
-    # rules by default during tempest test runs.
-    iniset $TEMPEST_CONFIG share enable_ip_rules_for_protocols
-    iniset $TEMPEST_CONFIG share enable_cert_rules_for_protocols glusterfs
-    iniset $TEMPEST_CONFIG share capability_snapshot_support True
-    iniset $TEMPEST_CONFIG share capability_create_share_from_snapshot_support true
-    # ro access_level is not supported by the driver.
-    iniset $TEMPEST_CONFIG share enable_ro_access_level_for_protocols
-    RUN_MANILA_SNAPSHOT_TESTS=True
-else
-    case "$GLUSTERFS_MANILA_DRIVER_TYPE" in
-    glusterfs|glusterfs-nfs)
-        local BACKEND_NAME="GLUSTERFS"
-        RUN_MANILA_EXTEND_TESTS=True
-        RUN_MANILA_SHRINK_TESTS=True
-        ;;
-    glusterfs-heketi|glusterfs-nfs-heketi)
-        local BACKEND_NAME="GLUSTERFSHEKETI"
-        ;;
-    *)
-        echo "no BACKEND_NAME for GLUSTERFS_MANILA_DRIVER_TYPE=${GLUSTERFS_MANILA_DRIVER_TYPE}"
-        ;;
-    esac
-    iniset $TEMPEST_CONFIG share enable_protocols nfs
-    iniset $TEMPEST_CONFIG share enable_ip_rules_for_protocols nfs
-    iniset $TEMPEST_CONFIG share storage_protocol NFS
-    # ro access_level is not supported by the driver.
-    iniset $TEMPEST_CONFIG share enable_ro_access_level_for_protocols
-fi
-
-
-iniset $TEMPEST_CONFIG share backend_names $BACKEND_NAME
-
-# Set two retries for CI jobs
-iniset $TEMPEST_CONFIG share share_creation_retry_number 2
-
-# Suppress errors in cleanup of resources
-SUPPRESS_ERRORS=${SUPPRESS_ERRORS_IN_CLEANUP:-True}
-iniset $TEMPEST_CONFIG share suppress_errors_in_cleanup $SUPPRESS_ERRORS
-
-
-# Disable multi_backend tests
-RUN_MANILA_MULTI_BACKEND_TESTS=${RUN_MANILA_MULTI_BACKEND_TESTS:-False}
-iniset $TEMPEST_CONFIG share multi_backend $RUN_MANILA_MULTI_BACKEND_TESTS
-
-# Disable manage/unmanage tests
-RUN_MANILA_MANAGE_TESTS=${RUN_MANILA_MANAGE_TESTS:-False}
-iniset $TEMPEST_CONFIG share run_manage_unmanage_tests $RUN_MANILA_MANAGE_TESTS
-
-# Disable extend tests
-RUN_MANILA_EXTEND_TESTS=${RUN_MANILA_EXTEND_TESTS:-False}
-iniset $TEMPEST_CONFIG share run_extend_tests $RUN_MANILA_EXTEND_TESTS
-
-# Disable shrink tests
-RUN_MANILA_SHRINK_TESTS=${RUN_MANILA_SHRINK_TESTS:-False}
-iniset $TEMPEST_CONFIG share run_shrink_tests $RUN_MANILA_SHRINK_TESTS
-
-# Disable multi_tenancy tests
+iniset $TEMPEST_CONFIG share run_snapshot_tests \
+    ${RUN_MANILA_SNAPSHOT_TESTS:-False}
+iniset $TEMPEST_CONFIG share run_extend_tests ${RUN_MANILA_EXTEND_TESTS:-False}
+iniset $TEMPEST_CONFIG share run_shrink_tests ${RUN_MANILA_SHRINK_TESTS:-False}
+iniset $TEMPEST_CONFIG share run_manage_unmanage_tests False
 iniset $TEMPEST_CONFIG share multitenancy_enabled False
+iniset $TEMPEST_CONFIG share run_consistency_group_tests False
 
-# Disable snapshot tests
-RUN_MANILA_SNAPSHOT_TESTS=${RUN_MANILA_SNAPSHOT_TESTS:-False}
-iniset $TEMPEST_CONFIG share run_snapshot_tests $RUN_MANILA_SNAPSHOT_TESTS
-
-# Disable consistency group tests
-RUN_MANILA_CG_TESTS=${RUN_MANILA_CG_TESTS:-False}
-iniset $TEMPEST_CONFIG share run_consistency_group_tests $RUN_MANILA_CG_TESTS
-
-# let us control if we die or not
-set +o errexit
-cd $BASE/new/tempest
-
-if [[ $MANILA_TEST_TYPE == 'api' ]]; then
-    export MANILA_TESTS='manila_tempest_tests.tests.api'
-    MANILA_TEMPEST_CONCURRENCY=12
-elif [[ $MANILA_TEST_TYPE == 'scenario' ]]; then
-    export MANILA_TESTS='manila_tempest_tests.tests.scenario'
-else
-    export MANILA_TESTS='manila_tempest_tests.tests'
-fi
-export MANILA_TEMPEST_CONCURRENCY=${MANILA_TEMPEST_CONCURRENCY:-8}
-
-# check if tempest plugin was installed correctly
-echo 'import pkg_resources; print list(pkg_resources.iter_entry_points("tempest.test_plugins"))' | python
+iniset $TEMPEST_CONFIG share share_creation_retry_number 2
+iniset $TEMPEST_CONFIG share suppress_errors_in_cleanup True
+iniset $TEMPEST_CONFIG share multi_backend False
 
 # Workaround for Tempest architectural changes (only for Liberty and lower releases)
 # See bugs:
@@ -148,11 +130,21 @@ iniset $TEMPEST_CONFIG identity alt_password $ADMIN_PASSWORD
 iniset $TEMPEST_CONFIG identity alt_tenant_name ${ALT_TENANT_NAME:-"alt_demo"}
 iniset $TEMPEST_CONFIG validation ip_version_for_ssh 4
 iniset $TEMPEST_CONFIG validation ssh_timeout $BUILD_TIMEOUT
-iniset $TEMPEST_CONFIG validation network_for_ssh ${PRIVATE_NETWORK_NAME:-"private"}
+iniset $TEMPEST_CONFIG validation network_for_ssh\
+    ${PRIVATE_NETWORK_NAME:-"private"}
+
+# let us control if we die or not
+set +o errexit
+
+# check if tempest plugin was installed correctly
+echo 'import pkg_resources; print list(pkg_resources.\
+    iter_entry_points("tempest.test_plugins"))' | python
 
 echo "Running tempest manila test suites"
+cd $BASE/new/tempest
 sudo -H -u $USER tempest list-plugins
-sudo -H -u $USER tempest run -r $MANILA_TESTS --concurrency=$MANILA_TEMPEST_CONCURRENCY
+sudo -H -u $USER tempest run -r $MANILA_TESTS\
+    --concurrency=$MANILA_TEMPEST_CONCURRENCY
 
 _retval=$?