storage: modify log message

Signed-off-by: Takahiro Yamashita <[email protected]>

src/flb_storage.c

@@ -533,16 +533,20 @@ int flb_storage_input_create(struct cio_ctx *cio,
         }
     }
     else if (stream->type != cio_storage_type) {
-        flb_info("[storage] storage type mismatch. input type=%s",
-                 flb_storage_get_type(in->storage_type));
+        flb_debug("[storage] storage type mismatch. input type=%s",
+                  flb_storage_get_type(in->storage_type));
+        if (stream->type == FLB_STORAGE_FS) {
+            flb_warn("[storage] Need to remove '%s/%s' if it is empty", cio->options.root_path, in->name);
+        }
+
         cio_stream_destroy(stream);
         stream = cio_stream_create(cio, in->name, cio_storage_type);
         if (!stream) {
             flb_error("[storage] cannot create stream for instance %s",
                       in->name);
             return -1;
         }
-        flb_info("[storage] re-create stream");
+        flb_info("[storage] re-create stream type=%s", flb_storage_get_type(in->storage_type));
     }
 
     /* allocate storage context for the input instance */