Solid state disk using method capable of rapidly recovering data and computer readable storage medium

Abstract

The invention discloses a solid state disk using method capable of rapidly recovering data and a computer readable storage medium, and belongs to the technical field of storage. The method comprises the following steps: when a solid state disk is in a normal running working state, respectively storing variable quantities and various basic data into a flash memory NAND by the solid state disk according to the LBA; and adding the current change information (the change information comprises an initial logic block address and a change length) of the trim table to the change amount data, and if thechange length of the current change information is greater than a preset length threshold, generating unit storage data based on the current change amount data. According to the solid state disk using method capable of rapidly recovering data, the solid state disk can divide the data capacity of the metadata type of the L2P type into multiple types, so that the metadata recovery time of the solidstate disk is shortened, the solid state disk can quickly enter a normal working state, the performance of the solid state disk is improved, and the practicability of the solid state disk is furtherimproved.

Description

technical field [0001] The invention belongs to the technical field of storage, and in particular relates to a method for using a solid-state hard disk for quickly recovering data and a computer-readable storage medium. Background technique [0002] The metadata of solid state disk (SSD) is the data used to manage the user data inside the SSD. The common metadata includes configuration data (config data), data block (datablock) management information data, logic to physical Address translation (logical to physical aSSDess, L2P) data and trimming (trim) data, etc. Usually L2P type metadata occupies most of the data volume of all metadata in the SSD, and the L2P table stores the mapping relationship of all L2P in the SSD. If the SSD loses or tampers with a section of the L2P table, it will directly lead to the loss of user data and even the SSD cannot work normally. Therefore, when the SSD suddenly loses power, how to restore the lost user data when the SSD is powered on is v...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a method for using a solid-state hard disk to quickly restore data, which solves the problem that the data volume of the L2P and trim tables occupies a very large proportion when the data in the solid-state hard disk is powered on to restore metadata. Large, it cannot be fully saved within 20ms of power failure, which will easily lead to data loss, and it takes a lot of time for the SSD to restore metadata, so the SSD cannot start to work immediately after power-on, affecting the efficiency of normal operation

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