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Metadata module and metadata module processing method

A processing method and metadata technology, applied in the field of storage systems, can solve problems affecting data reliability and consistency, and achieve the effect of ensuring integrity and consistency, reducing development cycles, and improving reliability

Active Publication Date: 2020-03-27
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the storage system encounters hard disk failure, disk removal, storage pool full and other lower-level offline situations, it is necessary to replace or expand the hard disk. For the metadata module, more complicated operations are required. If the operation is not done properly, the reliability of the data will be affected. sex and consistency

Method used

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  • Metadata module and metadata module processing method
  • Metadata module and metadata module processing method
  • Metadata module and metadata module processing method

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Embodiment Construction

[0034] In order to clearly illustrate the technical features of this solution, the present invention will be described in detail below through specific implementation modes and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily limiting the...

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Abstract

The invention discloses a metadata module which comprises a metadata object module used for managing metadata objects including LUN information and a root Node of a B + tree, and achieving initialization, updating and recovery of a ROOT area data structure; a transaction module which is used for ensuring the atomicity of the request; a write cache module whichis used for caching the request of theI / O service in a memory; a B + tree module which is used for realizing a B + tree operation algorithm of the metadata module; a read cache module which is used for improving the read performance of the metadata module; and aquery module is used for performing query operation. The invention further discloses a metadata module processing method for processing the offline condition of the lower layer of the storage system, the atomicity of metadata requests during offline of the lower layer is ensured, the integrity and consistency of data are ensured, and the reliability of metadata module development is improved.

Description

technical field [0001] The invention relates to the field of storage systems, in particular to a metadata module and a method for processing the metadata module. Background technique [0002] Under the cluster structure of the all-flash storage system, metadata is the most important part. The performance of the metadata module is improved through read cache and write cache, and the process is very complicated. For general I / O services, it is necessary to manage the mapping relationship between logical addresses and physical addresses; for the garbage collection function, it is necessary to manage the mapping relationship between physical addresses and logical addresses; for supported Chongshan functions, it is necessary to manage the I / O fingerprint value to The mapping relationship of physical addresses. It can be seen that for one I / O service, operations such as management of multiple mapping relationships are required. Therefore, the atomicity of the transaction must be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/06
CPCG06F3/0607G06F3/0656G06F3/0688
Inventor 王新忠
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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