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Solid state disk wear leveling method, device and computer readable storage medium

A wear-leveling, solid-state drive technology, applied in computing, memory systems, memory address/allocation/relocation, etc., can solve problems such as uneven wear and tear of data blocks, and achieve the effect of extending life and improving the efficiency of priority classification.

Active Publication Date: 2021-08-31
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In related technologies, in the process of achieving wear leveling based on the ZNS protocol, when zoneopen (opening a block) applies for a new physical block, it may not necessarily provide it with a physical block with a lower number of erasures, resulting in uneven wear of each data block

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  • Solid state disk wear leveling method, device and computer readable storage medium
  • Solid state disk wear leveling method, device and computer readable storage medium
  • Solid state disk wear leveling method, device and computer readable storage medium

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Embodiment Construction

[0041] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, but 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 making creative efforts belong to the protection scope of the present invention.

[0042]The terms "first", "second", "third" and "fourth" in the specification and claims of this application and the above drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", and any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, product, or device comprisi...

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Abstract

The present application discloses a wear leveling method and device of a solid-state hard disk, and a computer-readable storage medium. Wherein, the method includes constructing a plurality of free block linked lists and dirty block linked lists which are prioritized by data block erasure times, and classifying each data block into corresponding tables according to erasure times, block types, and erasure times allowable ranges; The free block linked list of the wear leveling condition sets a reset label for the block corresponding to the data block with the lowest erasure times; if the block reset command from the host is not received within the specified time, each dirty block linked list will be erased The data block with the lowest number of times is used as the source data block, and the data block with the highest number of erasures in each free block list is used as the destination data block for data movement; when a request for applying for a data block is received, it is selected from the free block list with the lowest number of erasures Data blocks, so as to realize the wear leveling of solid state drives based on the ZNS protocol, which is conducive to ensuring the wear balance of each data block in the solid state drive and effectively prolonging the life of the solid state drive.

Description

technical field [0001] The present application relates to the technical field of wear leveling, in particular to a solid state disk wear leveling method, device and computer-readable storage medium. Background technique [0002] With the rapid development of cloud computing and Internet technology, massive data needs to be stored all the time in daily work and life, and data storage technology has been developed accordingly to meet the actual storage needs of explosive growth data. SSD (Solid State Drives, solid state drive) is a hard disk made of solid state electronic memory chip array, which consists of a control unit and a solid state storage unit. Due to its stable performance, such as fast read and write speed and low energy consumption, it effectively overcomes many shortcomings of mechanical hard disks and is widely used. [0003] The storage unit of the solid state disk includes multiple data blocks (Block), and the data block is the minimum erasing unit of the sol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06G06F12/06
CPCG06F3/0616G06F12/0646
Inventor 刘哲
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD