File reading and writing method, device and equipment and computer readable storage medium

Abstract

The invention discloses a file reading and writing method which comprises the following steps: when a triggered file reading request is monitored, obtaining a copy storage routing group of a corresponding file according to the file reading request, and determining a first host for triggering the file reading request; Judging whether a replica storage route belonging to the first host exists in thereplica storage route group or not; If the replica storage route belonging to the first host exists in the replica storage route group, reading a file replica from the first host; And if the replicastorage route belonging to the first host does not exist in the replica storage route group, reading a file replica across a machine room. The invention further discloses a file reading and writing device and equipment and a computer readable storage medium. According to the invention, the bandwidth utilization rate between machine rooms can be reduced, and the file reading speed is improved.

Description

technical field [0001] The invention relates to the technical field of distributed storage, in particular to a file reading and writing method, device, equipment and computer-readable storage medium. Background technique [0002] With the advent of the big data era, distributed storage applications are becoming more and more widespread. In a distributed storage environment, there are multiple storage devices, and each storage device has multiple volumes. A file may have different numbers of file copies for data security and file access efficiency. File copies need to be evenly distributed on different volumes of different hosts, which can avoid the situation that the file cannot be accessed due to the failure of the storage node, and can also Avoid the increase of user access delay due to high traffic. [0003] At present, in the actual application of distributed storage technology, it is necessary to read and write files. When reading a file, it usually reads a copy of the...

AI Technical Summary

Problems solved by technology

[0003] At present, in the actual application of distributed storage technology, it is necessary to read and write files. When reading a file, it usually reads a copy of the file randomly from the sub-volume, and the copy of the file is distributed on different sub-volumes of different hosts. When reading, there are file copies stored in the local computer room, and file copies are read from other computer rooms, and the bandwidth between computer rooms is limited. When the amount of data transmission is large, the data transmission delay is high, which will resulting in slower reading of the file

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