Method for reading and writing file of distributed file system

Abstract

The invention provides a method for reading and writing a file of a distributed file system. Before multiple clients write the file, each client applies to an MDS for file writing permission, each client marks and applies for modification writing permission or append writing permission, and the MDS authorizes the clients to directly read and write; the clients send append writing modes or modification writing modes to the MBS asynchronously; the MBS counts client read and writing modes and authorizes the clients again to write cache or read the cache. The file writing permission is split into append writing with smaller scale and modification writing with smaller scale, if only the append writing situation exists, cache writing permission is granted to the clients, and the data processing efficiency is improved.

Description

technical field [0001] The invention relates to the field of distributed files, in particular to a method for reading and writing files in a distributed file system. Background technique [0002] With the rapid development of computer technology, the amount of information data in various forms is increasing. According to different industry conditions, the way to read and write data varies greatly. Under the control of existing file read and write permissions, if multiple customers If the terminal reads and writes a file at the same time, it can only use the method of direct writing and direct reading, and the data processing efficiency is low. Contents of the invention [0003] In order to overcome the deficiencies in the above-mentioned prior art, the present invention provides a distributed file system file reading and writing processing method, the method includes: [0004] Before multiple clients write to the file, each client applies to the MDS for the write permissi...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of computer technology, the amount of information data in various forms is increasing. According to different industry conditions, the way to read and write data varies greatly. Under the control of existing file read and write permissions, if multiple customers If the terminal reads and writes a file at the same time, only direct writing and direct reading methods can be used, and the data processing efficiency is low.

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