Read operation processing method, device, equipment and readable storage medium

Abstract

The invention discloses a read operation processing method, device, equipment and a readable storage medium. The method disclosed by the invention comprises the following steps: if a reading operationfails, carrying out a rereading operation by utilizing a first-level table; wherein the gear information included in the first-level table is the first N pieces of gear information arranged in a descending order according to the number of successful rereading times in the read retry table, and N is smaller than the number of all the pieces of gear information included in the read retry table. According to the method, the success rate of the rereading operation can be improved by utilizing the first-level table to perform the rereading operation, so that the reading performance of the solid state disk is improved, the traversal time can be shortened, and the rereading operation efficiency is improved. The read operation processing device, the equipment and the readable storage medium alsohave the above technical effects.

Description

technical field [0001] The present application relates to the technical field of data storage, and in particular to a read operation processing method, device, equipment and readable storage medium. Background technique [0002] At present, solid-state drives generally read data based on Nand flash particles. If the data reading fails, you can use the read retry table to try to re-read. The read retry table can provide reference voltages for reading data. These reference voltages cover scenarios such as data retention, read disturbance, and open blocks that are not full. [0003] In the prior art, if the data reading fails, it is necessary to traverse all the entries in the read retry table, and sort all the entries in real time according to the reread results and the program / erase cycle. However, not all entries in the read retry table can make the reread operation successful, that is, some entries in the read retry table do not actually work, so traversing all the entrie...

AI Technical Summary

Problems solved by technology

However, not all entries in the readretry table can make the reread operation successful, that is, some entries in the read retry table do not actually work, so traversing all the entries in the read retry table will affect the performance of the SSD

And there may be many entries in the readretry table, and the efficiency of the reread operation will be slower

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