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SSD bad block table backup method, device, computer equipment and storage medium

A technology of computer equipment and storage media, which is applied in the field of SSD bad block table backup, computer equipment and storage media, can solve problems such as bad block table loss, and achieve the effect of ensuring normal operation

Active Publication Date: 2021-08-17
SHENZHEN YILIAN INFORMATION SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current backup method is to store the bad block table and its backup distribution on two to three storage blocks of Nand flash memory. If it happens that all the storage blocks recording the bad block table are damaged, the bad block table will also be lost.

Method used

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  • SSD bad block table backup method, device, computer equipment and storage medium
  • SSD bad block table backup method, device, computer equipment and storage medium
  • SSD bad block table backup method, device, computer equipment and storage medium

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Embodiment Construction

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are 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.

[0043] It should be understood that when used in this specification and the appended claims, the terms "comprising" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or Presence or addition of multiple other features, integers, steps, operations, elements, components and / or collections thereof.

[0044] It should also be understood that the terminology used ...

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Abstract

The present invention relates to SSD bad block table backup method, device, computer equipment and storage medium. The method includes obtaining the backup of the bad block table to obtain the bad block backup table; dividing the bad block backup table to obtain several bad block information ; The information of several bad blocks is stored in the designated positions of several storage blocks. The present invention divides all storage blocks to form several super blocks, and then divides the entire bad block backup table, and dispersely stores them in the spare area designated by each super block, even in the case of damage to the bad block table. The bad block backup table can be restored by traversing all super blocks, so as to realize a more secure backup of the bad block table and ensure the normal operation of the entire SSD.

Description

technical field [0001] The invention relates to a solid-state hard disk, and more specifically refers to an SSD bad block table backup method, device, computer equipment and storage medium. Background technique [0002] Bad blocks will be generated during the opening process and normal operation of SSD (Solid State Drive), and these generated bad blocks will be recorded in a table, which is called the bad block table. The bad block table is to judge whether the storage block is good, normal, and usable. It plays a vital role in the normal operation of the SSD. The bad block table will be stored in the Nand flash memory in real time. If there are some abnormal reasons , the bad block table is damaged or lost, and the SSD cannot distinguish the good and bad of the storage block in the process of using the storage block, which may cause data consistency errors. Therefore, in order to prevent the bad block table on the Nand flash memory from being damaged, the SSD generally One...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14G06F3/06
CPCG06F3/0619G06F3/064G06F3/0679G06F11/1448
Inventor 杨学森郑春阳
Owner SHENZHEN YILIAN INFORMATION SYST CO LTD
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