海量数据迁移限时秒杀

import shutil
import os

def migrate_data(source_dir, target_dir):
    if not os.path.exists(target_dir):
        os.makedirs(target_dir)
    
    for root, dirs, files in os.walk(source_dir):
        for file in files:
            src_file = os.path.join(root, file)
            dst_file = os.path.join(target_dir, os.path.relpath(src_file, source_dir))
            if not os.path.exists(dst_file):
                os.makedirs(os.path.dirname(dst_file), exist_ok=True)
                shutil.copy2(src_file, dst_file)
                print(f"Copied {src_file} to {dst_file}")

# 示例调用
source_directory = "/path/to/source"
target_directory = "/path/to/target"
migrate_data(source_directory, target_directory)