Fingerprint library reconstruction method, device, equipment, readable storage medium and program product

By reading the header of the data file and obtaining the header fingerprint and metadata of the data block in parallel, the problem of low fingerprint database reconstruction efficiency in the existing technology is solved, and efficient fingerprint database reconstruction is achieved.

CN120973313BActive Publication Date: 2026-08-04GUANGZHOU DINGJIA COMPUTER TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202511161263.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-08-19
Publication Date
2026-08-04
Estimated Expiration
2045-08-19

AI Technical Summary

Technical Problem

In public cloud environments, existing technologies require waiting for the RTT (Real-Time To Request) when reading the header of a data file using the serial request method, resulting in low fingerprint database reconstruction efficiency and increased object storage processing time.

Method used

By reading the header of the data file, the header offset of the data block is obtained based on the bit set carried in the header. The header of the data block is read in parallel to obtain the data block fingerprint and metadata, and then inserted into the fingerprint database.

Benefits of technology

It reduces the reading of invalid data, saves traffic and bandwidth consumption, avoids bandwidth becoming a bottleneck for rebuilding the fingerprint database, and saves RTT and object storage time for processing read requests, thus improving the efficiency of fingerprint database reconstruction.

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Abstract

The application relates to a fingerprint library reconstruction method and device, equipment, a readable storage medium and a program product, and relates to the technical field of data recovery backup. The method comprises the following steps: reading the head part of a data file; acquiring the head part offset of each data block in the data file according to a bit set carried in the head part of the data file; reading the head part of each data block in parallel according to the head part offset of each data block, and obtaining the data block fingerprint and metadata carried in the head part of each data block; and inserting the data block fingerprint and metadata corresponding to each data block into a fingerprint library. The method can reduce the reading of invalid data and read the head part of each data block in parallel, so as to improve the fingerprint library reconstruction efficiency.
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