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Address mapping table management device, method and system and computer storage medium

An address mapping table and address mapping technology, applied in the field of storage, can solve the problems of the address mapping table being difficult to store stably, the number of erasures being limited, and being easily damaged.

Active Publication Date: 2020-11-24
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the life of the Flash memory is limited by the number of erasures and is easily damaged, it is difficult to store the address mapping table in the Flash memory stably, which affects the stable reading and writing of the Flash memory.

Method used

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  • Address mapping table management device, method and system and computer storage medium
  • Address mapping table management device, method and system and computer storage medium
  • Address mapping table management device, method and system and computer storage medium

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Embodiment Construction

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0040] see figure 1 , figure 1 A schematic structural diagram of an address mapping table management device provided in an embodiment of the present application.

[0041] An address mapping table management device provided in an embodiment of the present application may include: a storage device 11, an operating system 12 connected to the storage device 11, and a Flash storage controller 13 connected to the operating system 12;

[0042]Wherein, after the operating system 12 receiv...

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Abstract

The invention discloses an address mapping table management device, method and system and a computer medium. The address mapping table management device comprises storage equipment, an operating system connected with the storage equipment and a Flash storage controller connected with the operating system, wherein the operating system backs up a to-be-backed up address mapping table to the storageequipment after receiving a write operation of the to-be-backed up address mapping table sent by the Flash storage controller; and after receiving the read operation of the backed-up address mapping table sent by the Flash storage controller, the operating system reads the backed-up address mapping table in the storage device and sends the backed-up address mapping table to the Flash storage controller. In the application, the operating system backs up the address mapping table to the external storage device, so that even if the service life of the Flash storage controller is affected by operations such as erasing, the address mapping table which is completely backed up can still be read in the storage device, and the address mapping table is conveniently and stably managed.

Description

technical field [0001] The present application relates to the field of storage technology, and more specifically, relates to an address mapping table management device, method, system and computer storage medium. Background technique [0002] The service life of solid-state drives based on Flash memory is limited by the number of erasures. In order to reduce the impact of inherent defects on its performance, Flash memory needs effective management support, such as providing block device access interfaces through FTL (Flash Translation Layer, Flash Translation Layer), The main functions of the flash translation layer include address mapping, wear leveling, garbage collection, bad block management, power-down protection, and ECC verification. When the Flash memory conversion layer implements the management of the Flash memory, the most basic and key is the address mapping policy management. Address mapping refers to the mapping relationship between the virtual logical address...

Claims

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Application Information

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IPC IPC(8): G06F12/02G06F12/1009G06F11/14G06F3/06
CPCG06F12/0246G06F12/1009G06F11/1458G06F3/0631G06F3/0658G06F3/0644G06F3/0679
Inventor 张洪宾
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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