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公开(公告)号:US09256378B2
公开(公告)日:2016-02-09
申请号:US13901385
申请日:2013-05-23
Applicant: NetApp, Inc.
Inventor: Ling Zheng , Blake H. Lewis , Daniel W. Ting , Robert M. English , Stephen L. Manley
CPC classification number: G06F3/0641 , G06F3/0608 , G06F3/0683
Abstract: A method for sharing data blocks in a hierarchical file system in a storage server includes allocating a plurality of data blocks in the file system, and sharing data blocks in the file system, without using a persistent point-in-time image, to avoid duplication of data blocks. A method for identifying data blocks that can be shared includes computing a fingerprint for each of multiple data blocks to be written to a storage facility and storing the fingerprint with information identifying the data block in an entry in a set of metadata. The set of metadata is used to identify data blocks which are duplicates.
Abstract translation: 一种用于在存储服务器中的分层文件系统中共享数据块的方法包括在文件系统中分配多个数据块,并且在不使用持久时间点图像的情况下共享文件系统中的数据块,以避免重复 的数据块。 一种用于识别可共享的数据块的方法包括:计算要写入存储设施的多个数据块中的每一个的指纹,以及将标识数据块的信息存储在一组元数据中的条目中。 元数据集用于识别重复的数据块。