Data writing method and device, solid state disk and computer readable storage medium

Abstract

The invention discloses a data writing method, a data writing device, a solid state disk and a computer readable storage medium. The data writing method is applied to the solid-state disk. The solid state disk comprises a plurality of physical storage areas, wherein each physical storage area comprises a plurality of data blocks, the plurality of data blocks comprise storage data blocks and reserved data blocks, and the method comprises the following steps: when at least one reserved data block in the physical storage area is fully written with data, determining the quantity of valid data in each storage data block in the physical storage area; judging whether a storage data block with the number of valid data being zero exists in the physical storage area or not; and if yes, erasing all data in the storage data block with the number of valid data being zero in the physical storage area. The method is high in data writing speed and particularly suitable for the field of video monitoring.

Description

technical field [0001] The invention relates to the technical field of data processing, in particular to a data writing method, a data writing device, a solid-state hard disk and a computer-readable storage medium. Background technique [0002] SSD (Solid State Drive, SSD for short) is a hard disk made of an array of solid-state electronic storage chips. [0003] Solid state disk SSD usually includes multiple logical storage units and physical storage units. The physical storage unit can use non-volatile storage media. The physical storage unit is usually divided into multiple data blocks for storing data. The client can include multiple Logical storage unit, the logical address of the logical storage unit has a mapping relationship with the physical address of each data block. The write command from the upper-layer client carries the logical address and the data to be written. According to the logical address, the corresponding The physical address is to write the data to ...

AI Technical Summary

Problems solved by technology

[0006] Each channel has randomness when writing data, resulting in different amounts of valid data for each channel. When it is necessary to write the data to be written into each channel In the case of data blocks, some channels may need to perform garbage collection operations, and some channels may not need to perform garbage collection operations, so the data written by each channel will be inconsistent, affecting the overall data writing speed, and the data writing speed is slower. slow

Images