Snapshot file data block reading method and device, equipment and storage medium

Abstract

The invention relates to the technical field of internet, and discloses a data block reading method, device and equipment for a snapshot file and a storage medium, the method comprises the following steps: when a data block reading instruction corresponding to the snapshot file is received, determining index information of a target data block according to the data block reading instruction; acquiring key information corresponding to the pre-stored data block from a preset hash table; and when the index information is consistent with the key information, obtaining a file storage area corresponding to the key information from a preset hash table, and reading the target data block in the file storage area. When the target snapshot file is read, the data block does not need to be segmented, and only the data block needs to be pre-stored in the preset hash table, then the corresponding file storage area is searched based on the preset hash table, and finally the target data block is read in the file storage area, so that the data block integrity is ensured, and the data block reading efficiency is improved. And the reading efficiency of the data blocks in the snapshot file is improved.

Description

technical field [0001] The present invention relates to the field of Internet technologies, and in particular, to a method, device, device and storage medium for reading data blocks of snapshot files. Background technique [0002] With the development of Internet technology, more and more files need to be stored in both work and daily life, resulting in low efficiency of reading files. In the prior art, the implementation of reading snapshot files in Linux and Android systems is based on Hard disk partition software (Disk Manager, DM), but DM processing is only for the data block reading of snapshot files, which inevitably involves dividing the data blocks. When the divided data blocks are too large, the memory of the virtual block device will become larger. , the overall performance of the system deteriorates. If the data block is too small, the process of reading the snapshot file will be cumbersome and inefficient. Therefore, how to improve the data block reading efficie...

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a method, device, device and storage medium for reading data blocks of a snapshot file, aiming at solving the problem of improving the efficiency of reading data blocks of a snapshot file while ensuring the integrity of the data blocks of the snapshot file technical problem

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