Method for deleting duplicated data in file system in real time

A file system and data duplication technology, applied in digital data processing, special data processing applications, instruments, etc., can solve problems such as low cutting efficiency, improve efficiency, improve removal effect, save backup computing and storage resource overhead Effect
CN101908073AInactive Publication Date: 2010-12-08TSINGHUA UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
TSINGHUA UNIV
Publication Date
2010-12-08
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for deleting duplicated data in a file system in real time, and belongs to the technical field of computer data storage. In a file system establishment stage, a file metadata table, a data block index and a file constitution table are set in an embedded database; and in a file system operation stage, operating commands initiated to the file system by applications are received and responded through a file system driver, and include establishing a new file, writing data to an existing file, reading data from the existing file and deleting the existing data. The method simultaneously supports fixed-length and variable-length file blocking methods, and can delete the duplicated data in the file system in real time, save storage space and improve the utilization efficiency of storage equipment; and the process of deleting the duplicated data is completely transparent to the applications and a user, the file operation of various conventional applications is seamlessly compatible, and almost all negative effects on the user experience are avoided.
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Description

technical field

[0001] The invention relates to a method for deleting duplicate data in real time in a file system, belonging to the technical field of computer data storage. Background technique

[0002] With the rapid development of digital devices, human society is entering the digital age in an all-round way, and the amount of data that needs to be stored is also showing an explosive growth trend. In this context, in order to reduce storage costs and improve the scalability of storage systems, how to store as much data as possible with as little space as possible has become the hottest issue in the storage field.

[0003] Data deduplication technology emerged at the beginning of this century and has been widely popularized and applied in recent years. The basic idea of ​​data deduplication can be summarized as follows: Firstly, the files in the storage system are divided into several data blocks, and the hash value of the data block content is used to build an index for...

Claims

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