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Method and device for controlling wear leveling of storage device fleet

A storage device, wear leveling technology, applied in the field of communications, can solve the problems of reducing the service life of the cluster, unable to ensure the wear leveling of the whole cluster, etc., to achieve the effect of achieving wear leveling and improving the service life

Active Publication Date: 2018-02-23
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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

Method used

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  • Method and device for controlling wear leveling of storage device fleet
  • Method and device for controlling wear leveling of storage device fleet
  • Method and device for controlling wear leveling of storage device fleet

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Embodiment Construction

[0038]The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] figure 1 It is a schematic flowchart of a method for controlling wear leveling of a storage device cluster according to an embodiment of the present invention. figure 1 The method 100 may be implemented by a control device in a storage device cluster, for example, an SSD (Solid State Disk, solid state disk) server or an MDS (Metadata Server, metadata server).

[0040] 101. Determine the wear degree value of each storage node in the storage device cluster. ...

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Abstract

The invention discloses a method and equipment for controlling wear leveling of a storage device cluster. The method includes: determining the wear degree value of each storage node in the storage device cluster; wear discrete degree value; if the wear discrete degree value is greater than the preset threshold, migrate all or part of the objects stored in the first storage node in the storage device cluster to the second storage node, wherein the wear degree value of the first storage node is greater than The wear degree value of the second storage node. Based on the above technical solution, when the discrete degree of wear of the storage device fleet exceeds the threshold, some objects stored in the storage nodes with a greater wear degree are migrated to the storage nodes with a less wear degree, so as to achieve wear balance of the storage device fleet. In this way, the service life of the entire storage device fleet is improved.

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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 舒继武欧佳欣朱冠宇
Owner HUAWEI TECH CO LTD