diff --git a/src/frostfs_testlib/load/load_config.py b/src/frostfs_testlib/load/load_config.py
index b859971..2a546c4 100644
--- a/src/frostfs_testlib/load/load_config.py
+++ b/src/frostfs_testlib/load/load_config.py
@@ -177,13 +177,9 @@ class Preset:
 @dataclass
 class PrometheusParams:
     # Prometheus server URL
-    server_url: Optional[str] = metadata_field(
-        all_load_scenarios, env_variable="K6_PROMETHEUS_RW_SERVER_URL", string_repr=False
-    )
+    server_url: Optional[str] = metadata_field(all_load_scenarios, env_variable="K6_PROMETHEUS_RW_SERVER_URL", string_repr=False)
     # Prometheus trend stats
-    trend_stats: Optional[str] = metadata_field(
-        all_load_scenarios, env_variable="K6_PROMETHEUS_RW_TREND_STATS", string_repr=False
-    )
+    trend_stats: Optional[str] = metadata_field(all_load_scenarios, env_variable="K6_PROMETHEUS_RW_TREND_STATS", string_repr=False)
     # Additional tags
     metrics_tags: Optional[str] = metadata_field(all_load_scenarios, None, "METRIC_TAGS", False)
 
@@ -246,9 +242,7 @@ class LoadParams:
 
     # ------- COMMON SCENARIO PARAMS -------
     # Load time is the maximum duration for k6 to give load. Default is the BACKGROUND_LOAD_DEFAULT_TIME value.
-    load_time: Optional[int] = metadata_field(
-        all_load_scenarios, None, "DURATION", False, formatter=convert_time_to_seconds
-    )
+    load_time: Optional[int] = metadata_field(all_load_scenarios, None, "DURATION", False, formatter=convert_time_to_seconds)
     # Object size in KB for load and preset.
     object_size: Optional[int] = metadata_field(all_load_scenarios, "size", "WRITE_OBJ_SIZE", False)
     # For read operations, controls from which set get objects to read
@@ -266,9 +260,7 @@ class LoadParams:
     # sleep for the remainder of the time until the specified minimum duration is reached.
     min_iteration_duration: Optional[str] = metadata_field(all_load_scenarios, None, "K6_MIN_ITERATION_DURATION", False)
     # Prepare/cut objects locally on client before sending
-    prepare_locally: Optional[bool] = metadata_field(
-        [LoadScenario.gRPC, LoadScenario.gRPC_CAR], None, "PREPARE_LOCALLY", False
-    )
+    prepare_locally: Optional[bool] = metadata_field([LoadScenario.gRPC, LoadScenario.gRPC_CAR], None, "PREPARE_LOCALLY", False)
     # Specifies K6 setupTimeout time. Currently hardcoded in xk6 as 5 seconds for all scenarios
     # https://k6.io/docs/using-k6/k6-options/reference/#setup-timeout
     setup_timeout: Optional[str] = metadata_field(all_scenarios, None, "K6_SETUP_TIMEOUT", False)
@@ -298,35 +290,25 @@ class LoadParams:
     delete_rate: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "DELETE_RATE", True, True)
 
     # Amount of preAllocatedVUs for write operations.
-    preallocated_writers: Optional[int] = metadata_field(
-        constant_arrival_rate_scenarios, None, "PRE_ALLOC_WRITERS", True, True
-    )
+    preallocated_writers: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "PRE_ALLOC_WRITERS", True, True)
     # Amount of maxVUs for write operations.
     max_writers: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "MAX_WRITERS", False, True)
 
     # Amount of preAllocatedVUs for read operations.
-    preallocated_readers: Optional[int] = metadata_field(
-        constant_arrival_rate_scenarios, None, "PRE_ALLOC_READERS", True, True
-    )
+    preallocated_readers: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "PRE_ALLOC_READERS", True, True)
     # Amount of maxVUs for read operations.
     max_readers: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "MAX_READERS", False, True)
 
     # Amount of preAllocatedVUs for read operations.
-    preallocated_deleters: Optional[int] = metadata_field(
-        constant_arrival_rate_scenarios, None, "PRE_ALLOC_DELETERS", True, True
-    )
+    preallocated_deleters: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "PRE_ALLOC_DELETERS", True, True)
     # Amount of maxVUs for delete operations.
     max_deleters: Optional[int] = metadata_field(constant_arrival_rate_scenarios, None, "MAX_DELETERS", False, True)
 
     # Multipart
     # Number of parts to upload in parallel
-    writers_multipart: Optional[int] = metadata_field(
-        [LoadScenario.S3_MULTIPART], None, "WRITERS_MULTIPART", False, True
-    )
+    writers_multipart: Optional[int] = metadata_field([LoadScenario.S3_MULTIPART], None, "WRITERS_MULTIPART", False, True)
     # part size must be greater than (5 MB)
-    write_object_part_size: Optional[int] = metadata_field(
-        [LoadScenario.S3_MULTIPART], None, "WRITE_OBJ_PART_SIZE", False
-    )
+    write_object_part_size: Optional[int] = metadata_field([LoadScenario.S3_MULTIPART], None, "WRITE_OBJ_PART_SIZE", False)
 
     # Period of time to apply the rate value.
     time_unit: Optional[str] = metadata_field(constant_arrival_rate_scenarios, None, "TIME_UNIT", False)
@@ -341,7 +323,7 @@ class LoadParams:
     # Config file location (filled automatically)
     config_file: Optional[str] = metadata_field([LoadScenario.LOCAL, LoadScenario.S3_LOCAL], None, "CONFIG_FILE", False)
     # Config directory location (filled automatically)
-    config_dir: Optional[str] = metadata_field([LoadScenario.S3_LOCAL], None, "CONFIG_DIR", False)
+    config_dir: Optional[str] = metadata_field([LoadScenario.LOCAL, LoadScenario.S3_LOCAL], None, "CONFIG_DIR", False)
 
     def set_id(self, load_id):
         self.load_id = load_id
@@ -474,9 +456,7 @@ class LoadParams:
             static_params = [f"{load_type_str}"]
 
         dynamic_params = [
-            f"{meta_field.name}={meta_field.value}"
-            for meta_field in self._get_applicable_fields()
-            if meta_field.metadata["string_repr"]
+            f"{meta_field.name}={meta_field.value}" for meta_field in self._get_applicable_fields() if meta_field.metadata["string_repr"]
         ]
         params = ", ".join(static_params + dynamic_params)