Method, device, equipment and readable storage medium for storing metadata

Abstract

The invention discloses a method for storing metadata, which includes: when the solid-state hard disk is converted from a power-off state to a power-on state, reading target metadata from FLASH and storing it in RAM; If yes, modify the target metadata in RAM; wherein, the enable command is a command for the host to command the SSD to enter the running state. After the method reads the target metadata from FLASH and stores it in RAM, it does not rush to modify and save the target metadata, but detects whether the enable command sent by the host is received; when the enable command is received, it indicates that there is currently Read or write operations, modify and save the target metadata at this time, thereby avoiding unnecessary modification and saving of metadata, and improving the stability of metadata. Correspondingly, a metadata storage device, device, and readable storage medium disclosed in the present invention also have the above-mentioned technical effects.

Description

technical field [0001] The present invention relates to the technical field of data storage, and more specifically, to a metadata storage method, device, equipment and readable storage medium. Background technique [0002] SSD (Solid State Drives), also known as solid disk, is a hard disk made of solid-state electronic storage chip arrays, including FLASH and RAM; FLASH is a non-volatile storage medium, and the data stored on it after power-off The data is not lost, it is composed of multiple data blocks, and each data block is preset with a corresponding storage space; RAM is a volatile storage medium, generally SRAM or DRAM, and the data stored on the solid-state hard disk is lost after power-off. [0003] Under normal circumstances, after the solid-state hard disk is powered on, it will select the data block to be operated in FLASH, read the metadata of the data block to RAM, and modify the metadata in RAM and save it to enter the running state. Causes a read or write op...

AI Technical Summary

Problems solved by technology

However, after the solid-state hard drive is powered on, there is not necessarily a read or write operation, so it may be meaningless to read, modify and save the metadata of the modified data block immediately after the solid-state hard drive is powered on; After the metadata of the data block is saved, the solid-state drive is always in a waiting state, which will reduce the stability of the metadata of the data block

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