Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for rebuilding data of magnetic disk array

A disk array and data reconstruction technology, which is applied in the direction of data error detection and response error generation, which can solve the problems that affect the read and write performance and reliability of the storage system, and require a lot of time.

Inactive Publication Date: 2009-12-30
HUAZHONG UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a data reconstruction method of a disk array, which solves the problem that the existing disk array data reconstruction method takes too much time and affects the read-write performance and reliability of the storage system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for rebuilding data of magnetic disk array
  • Method for rebuilding data of magnetic disk array
  • Method for rebuilding data of magnetic disk array

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] Hereinafter, the present invention will be further described in detail by taking disk array level 5 as an example with reference to the accompanying drawings.

[0038] figure 1 It is a schematic diagram of the relationship between each step of the present invention: after the initialization step is completed, it enters the log bitmap update step, when a member disk of the disk array fails, it enters the log-based reconstruction step, and when the user issues a shutdown command, it enters the end step.

[0039] figure 2 For the schematic diagram of the initialization step process of the present invention, the following operations are performed:

[0040] Open an existing disk array or create a new disk array according to user instructions, the main control module creates a log bit chart of the disk array, and each bit of the log bit chart corresponds to a strip of the disk array; the main control module judges whether the disk array is To create a new disk array, if it...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a disk array data reconstruction method which pertains to a computer data storage method and solves the problem that the existing disk array data reconstruction method takes too much time and affects the reading and writing performances and reliability of a storage system. A disk array of the invention is provided with a main control module, reading and writing processing modules and a reconstruction module and comprises the steps of initialization, diary pot diagram update, reconstruction based on diaries and finishing. The method instructs data reconstruction process by the real-time monitoring of disk space using status of the disk array; when space that is not accessed is reconstructed, the only requirement is to write 0 in all corresponding data blocks newly added into a disk, thus greatly reducing physical disk visiting time brought by reconstruction, increasing reconstruction speed and reducing the response time of user access; the reconstruction method does not change the reconstruction procedure or the distribution manner of disk array data, can conveniently optimize various traditional disk array data reconstruction methods and is applicable to the construction of storage systems with high performance, high usability and high reliability.

Description

technical field [0001] The invention belongs to a computer data storage method, in particular to a data reconstruction method of a disk array. Background technique [0002] With the development of computer technology and network communication technology, the degree of informatization is getting higher and higher, and people's requirements for data reliability are getting higher and higher. Disk array RAID (Redundant Array of Independent Disks) is a typical device in the field of reliable storage systems. Compared with a single disk, the performance, availability and reliability of the disk array have been greatly improved. Among them, mirroring, parity, Hot backup and so on are commonly used fault tolerance technologies for disk arrays. When a member disk in the disk array fails and a new disk is added, the disk array can automatically switch to the reconstruction mode, and the reconstruction process continuously rebuilds the data blocks on the failed disk to the newly adde...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F11/14
Inventor 冯丹陈俭喜曾令仿吴素贞毛波庞丽萍
Owner HUAZHONG UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com