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Method and device for storing SSD system data based on mapping table

A system data, mapping table technology, applied in memory systems, electrical digital data processing, memory address/allocation/relocation, etc., can solve problems such as fragmentation, increased firmware maintenance costs, and increased firmware complexity, reducing complexity. , the effect of meeting demand, improving maintainability and robustness

Active Publication Date: 2019-10-25
SHENZHEN YILIAN INFORMATION SYST CO LTD
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Problems solved by technology

For example, BB_table is stored in a specified allocated Block (physical block), smart is stored in a different specified Block, host log is also stored in another Block, etc.; each type of data is stored in its own way, which appears to be It is very scattered, there is no unified storage method, and it is not easy to manage, which directly increases the maintenance cost of the firmware, increases the complexity of the firmware, and affects the robustness of the firmware; therefore, it cannot meet the demand

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  • Method and device for storing SSD system data based on mapping table
  • Method and device for storing SSD system data based on mapping table
  • Method and device for storing SSD system data based on mapping table

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Embodiment Construction

[0034] In order to fully understand the technical content of the present invention, the technical solutions of the present invention will be further introduced and illustrated below in conjunction with specific examples, but not limited thereto.

[0035] like Figure 1 to Figure 5 Specific examples shown, where, as Figure 1 to Figure 4 As shown, the present invention discloses a method for storing SSD system data based on a mapping table, comprising the following steps:

[0036] S1, write system data to SSD;

[0037] S2, obtaining the latest physical address;

[0038] S3, updating the entry corresponding to the SSD system data mapping table;

[0039] S4, write the SSD system data into the latest physical address, and write the SSD system data mapping table into the nand flash memory.

[0040] Wherein, before the S1, it also includes: establishing a mapping table corresponding to the SSD system data category and its stored physical address; in this embodiment, each type of...

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Abstract

The invention relates to a method and device for storing SSD system data based on a mapping table. The method comprises the steps that S1, conducting system data writing on an SSD; s2, acquiring a latest physical address; S3, updating table entries corresponding to the SSD system data mapping table; and S4, writing the SSD system data into the latest physical address, and writing the SSD system data mapping table into the nand flash memory. The mapping table formed by mapping between different types of system data and physical addresses is established, and the mapping table is used for uniformly storing the different types of system data, so that the complexity of firmware is reduced, and maintainability and robustness of firmware are improved.

Description

technical field [0001] The present invention relates to the technical field of solid-state hard disk data storage, and more specifically refers to a method and device for storing SSD system data based on a mapping table. Background technique [0002] There are many types of existing SSD system data, such as BB_table (bad block table for recording bad blocks), smart (recording SSD running status information), host log (host log), etc.; each type has its own independent There are many storage methods, because there are many types of system data, and there are many storage methods for the same. For example, BB_table is stored in a specified allocated Block (physical block), smart is stored in a different specified Block, host log is also stored in another Block, etc.; each type of data is stored in its own way, which appears to be It is very scattered, there is no unified storage method, and it is not easy to manage, which directly increases the maintenance cost of the firmwar...

Claims

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Application Information

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IPC IPC(8): G06F12/02
CPCG06F12/0246
Inventor 杨学森秦龙华
Owner SHENZHEN YILIAN INFORMATION SYST CO LTD
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