File reading method, apparatus and device

Abstract

The invention discloses a file reading method, apparatus and device, and a computer readable storage medium. The method comprises the steps of obtaining a temporary reading cache permission of a target file; according to the temporary reading cache permission, obtaining attribute information of the target file, releasing the temporary reading cache permission, and immediately updating permissionsof currently owned all directory files to enable a distributed file system to send the reading cache permission of the target file; and obtaining the reading cache permission, and reading the target file by utilizing the reading cache permission. Through the method, the time delay and the waiting time of reading the file by a client can be effectively shortened; the reading performance and high storage availability of the distributed file system are improved; and the resource waste is avoided. Correspondingly, the invention discloses the file reading apparatus and device, and the computer readable storage medium, which also have the abovementioned technical effects.

Description

technical field [0001] The present invention relates to the technical field of distributed file systems, and more specifically, to a method, device, device and computer-readable storage medium for reading files. Background technique [0002] With the rapid development of the Internet and computer technology, the storage capacity of data files is gradually increasing, especially in the distributed file system, because the files are stored in different physical locations, when multiple clients access the distributed file system at the same time, the access efficiency is affected and storage business. [0003] At present, in the distributed file system, when multiple clients read and write the same file, the read client sends a request for the read cache permission of the file to the distributed file system. At this time, the system will grant the read client a temporary Read cache permission, so that the read client can obtain the attribute information of the file, and after ...

AI Technical Summary

Problems solved by technology

However, due to the delay in the permission update of the client in the distributed file system, the message that the client releases the temporary read cache permission cannot reach the metadata server in the distributed system immediately, so that the metadata server cannot immediately know the client. The temporary read cache permission has been released, so that the client cannot obtain the read cache permission immediately, and it is in a waiting state and there is a freeze phenomenon

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