File access method and device, node and storage medium

Abstract

The invention discloses a file access method and device, a node and a storage medium. The method comprises the steps of cutting at least one to-be-stored target file according to a preset rule; sending a request for storing the at least one to-be-stored target file to an initial target node in the plurality of nodes, so as to upload and store the block file which is not stored in the initial target node at present and the corresponding index in the plurality of block files on at least one node in the plurality of nodes; and in response to a file retrieval request, retrieving the requested to-be-retrieved target file from the distributed data storage system according to the indexes corresponding to the plurality of block files forming the requested to-be-retrieved target file. The single file uploaded to the distributed data storage system by the user is divided into a plurality of file blocks, and the consistency and availability of the file are ensured through the Hash algorithm, so that the reliability and the storage capacity of the distributed data storage system are improved.

Description

technical field [0001] The invention relates to the field of storage technology, in particular to a file access method, device, node and storage medium. Background technique [0002] The current storage of digital files is usually stored in a single complete file unit. For some client devices with weak processing performance or small storage capacity, the storage pressure of storing one or more large files alone is very huge. . For example, for a small-capacity client device with a storage capacity of 16G, there is nowhere to store a single file larger than 16G, nor can a single file be cut and stored. Contents of the invention [0003] Aiming at the defects of the above prior art, the present invention provides a file access method, device, node and storage medium, which divides a single file uploaded by a user to a distributed data storage system into several block files through distributed data storage technology, and The consistency and availability of files are ensu...

AI Technical Summary

Problems solved by technology

[0002] The current storage of digital files is usually stored in a single complete file unit. For some client devices with weak processing performance or small storage capacity, the storage pressure of storing one or more large files alone is very huge.

For example, for a small-capacity client device with a storage capacity of 16G, there is nowhere to store a single file larger than 16G, nor can a single file be cut and stored

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