Solid state disk garbage collection management method, device and equipment

Abstract

The invention discloses a solid state disk garbage collection management method, which comprises the following steps: after a solid state disk is powered on, counting the number of blocks on a garbagecollection GC linked list in the solid state disk in real time and storing the number; Detecting whether a preset GC trigger condition of the solid state disk is met and whether the number of blocksis 0 or not, and if the GC trigger condition is met and the number of blocks is not 0, selecting the blocks from the GC linked list to carry out garbage collection processing; And if the GC trigger condition is met and the number of the blocks is 0, selecting the blocks from the dirty chain table to carry out garbage collection processing. According to the method, the existence condition of the blocks on the GC linked list can be perceived in advance, when the trigger condition is met and the number of the blocks on the GC linked list is 0, the blocks are directly obtained from the linked listoutside the GC linked list, and the garbage collection efficiency is higher; The invention further discloses a device and equipment based on the method and a computer readable storage medium.

Description

technical field [0001] The invention relates to the technical field of garbage collection of solid state disks, in particular to a method for managing garbage collection of solid state disks. The invention also relates to a solid-state hard disk garbage recovery management device, equipment and computer-readable storage medium. Background technique [0002] Garbage Collection (GC) of SSD (Solid State Drives) is actually equivalent to defragmentation. It is an automatic processing mechanism of the main control chip of the SSD itself and does not depend on the operating system. Since SSD erasure is based on blocks (blocks), garbage collection is also performed in units of blocks, that is, all valid pages in a block are moved to a new block, and the old block is erased. The advantage of this is that on the one hand, it reduces the addressing burden, and on the other hand, it leaves more free blocks. Therefore, garbage collection plays a vital role in the performance and lifes...

AI Technical Summary

Problems solved by technology

[0005] In the current garbage collection process, when the triggering conditions of GC are met, it will first try to fetch from the GC linked list, if it cannot be fetched, it will be fetched from other linked lists, but there may be a possibility that the GC linked list does not contain blocks, At this point, the efficiency of the entire GC process is affected.

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