使用FSx作为数据源的Amazon SageMaker SDK中directory_path应该设置什么值？

【以下的问题经过翻译处理】 Amazon SageMaker SDK中的FileSystemInput的directory_path参数应该设置为什么值？

以下是有关我的Amazon FSx for Lustre文件系统的一些信息：

• 我的FSx ID是fs-0684xxxxxxxxxxx。
• 我的FSx挂载名称为lhskdbmv。
• FSx映射到一个Amazon S3存储桶，其中包含文件（其key中没有额外的前缀）。

我们的测试的过程和结果如下：

尝试1：

fs = FileSystemInput(
    file_system_id='fs-0684xxxxxxxxxxx',
    file_system_type='FSxLustre',
    directory_path='lhskdbmv',
    file_system_access_mode='ro')

结果：

estimator.fit（fs）返回ClientError: An error occurred (ValidationException) when calling the CreateTrainingJob operation: FileSystem DirectoryPath 'lhskdbmv' for channel 'training' is not absolute or normalized. Please ensure you don't have a trailing "/", and/or "..", ".", "//" in the path.

尝试2：

fs = FileSystemInput(
    file_system_id='fs-0684xxxxxxxxxxx',
    file_system_type='FSxLustre',
    directory_path='/',
    file_system_access_mode='ro')

结果：

ClientError: An error occurred (ValidationException) when calling the CreateTrainingJob operation: The directory path for FSx Lustre file system fs-068406952bf758bac is invalid. The directory path must begin with mount name of the file system.

尝试3：

fs = FileSystemInput(
    file_system_id='fs-0684xxxxxxxxxxx',
    file_system_type='FSxLustre',
    directory_path='fsx',
    file_system_access_mode='ro')

结果：

ClientError: An error occurred (ValidationException) when calling the CreateTrainingJob operation: FileSystem DirectoryPath 'fsx' for channel 'training' is not absolute or normalized. Please ensure you don't have a trailing "/", and/or "..", ".", "//" in the path.