Method and device for achieving storage device cluster abrasion balance

Abstract

The invention discloses a method and a device for achieving storage device cluster abrasion balance. The method includes determining an abrasion degree value of each storage node in a storage device cluster; determining an abrasion discrete degree value of the storage device cluster according to the abrasion degree value of each storage node; if the abrasion discrete degree value is larger than the preset threshold, moving all or parts of objects stored in a first storage node of the storage device cluster into a second storage node, wherein the abrasion degree value of the first storage node is larger than that of the second storage node. By means of the technical scheme, when the abrasion discrete degree of the storage device cluster exceeds the threshold, parts of the objects stored in the storage node with larger abrasion degree are moved into the storage node with small abrasion degree to achieve storage device cluster abrasion balance. Therefore, the service life of the whole storage device cluster is prolonged.

Description

technical field [0001] Embodiments of the present invention relate to the communication field, and more specifically, to a method and device for controlling wear leveling of a storage device cluster. Background technique [0002] Flash memory (Flash) memory has the characteristics of non-volatility, solid state, small size, light weight, anti-vibration, high performance and low energy consumption. With the development of embedded technology, Flash is used more and more widely. Since Flash memory has the characteristics of limited erasing times and erasing first, then writing, its service life is limited. Therefore, how to extend the service life of the Flash memory without affecting the normal use has become a research hotspot at present. [0003] When erasing and writing management is performed on the Flash memory, a file partition table mapping logical sectors to physical sectors will be established. Write the file partition table to a fixed physical sector for fast rea...

AI Technical Summary

Problems solved by technology

[0006] This wear leveling method can achieve wear leveling of independent Flash devices, but in the application scenario of Flash clusters with multiple storage nodes, it cannot ensure the wear leveling of the entire cluster

There will still be a situation where some storage nodes wear out too much while others wear out less frequently, reducing the service life of the entire cluster

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