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Method and system for managing and processing metadata of storage equipment

A storage device and management method technology, applied in the field of storage device metadata management methods and systems, can solve the problem of low reliability of metadata storage and recovery, and achieve the effects of short startup time, short shutdown time, and small space requirements

Active Publication Date: 2015-03-25
SHANNON SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a storage device metadata management method and system for solving the problem of low reliability of storage and recovery of metadata on flash media in the prior art

Method used

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  • Method and system for managing and processing metadata of storage equipment
  • Method and system for managing and processing metadata of storage equipment
  • Method and system for managing and processing metadata of storage equipment

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Embodiment Construction

[0035] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0036] It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arbitrarily during actual impleme...

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Abstract

The invention provides a method and system for managing and processing metadata of storage equipment. The method comprises the following steps: one or more erase blocks form a superblock; the superblock retains a space for storing superblock-related metadata; the superblock-related metadata comprises a serial number distributed for the superblock and address mapping information in the superblock; the address mapping information stores a mapping relationship from a physical sector address to a logic sector address; when data is written into the superblock, the corresponding address mapping information of the data is also written into the superblock; when a system is recovered, a page table of the storage system is recovered according to the address mapping information of the superblock; the page table marks a mapping relationship from a logic sector address to a physical sector address. Due to the adoption of the technical scheme, the page table can be guaranteed to be completely recovered during startup and the storage equipment can be ensured to normally work when started.

Description

technical field [0001] The invention relates to a computer storage technology, in particular to a storage device metadata management method and system. Background technique [0002] The data storage technology based on flash memory (NAND Flash) has developed rapidly in the past ten years, and has gradually replaced the traditional magnetic recording hard disk (hard disk drive, HDD) in many applications. The most notable difference between flash memory and traditional hard disk-based is the need for a fairly complex flash translation layer (FTL). Due to the non-rewritable nature of flash memory, the logical block address (LBA: Logical Block Address) to the physical block address (PBA: Physical Block Address) is dynamically changing, and FTL needs to maintain this dynamically changing mapping table data structure. This The dynamic mapping table constitutes a part of metadata (metadata) to realize the mutual conversion function of flash memory LBA to PBA. In a data storage sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06G06F12/06G06F11/14
CPCG06F12/06G06F12/0646G06F11/1441G06F11/00G06F12/0607
Inventor 周溱阳学仕
Owner SHANNON SYST
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