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

Logical volume rapid synchronization method based on data differentia

A data discrepancy and logical volume technology, which is applied in the redundancy of operations for data error detection, electrical digital data processing, special data processing applications, etc., can solve the problem of reducing the amount of synchronized data, inconsistent source volume data, reducing data Compare the scope and other issues to achieve the effect of reducing the amount of data and reducing the scope

Inactive Publication Date: 2009-03-18
TSINGHUA UNIV +1
View PDF0 Cites 37 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem that when the data of the source volume and the destination volume are inconsistent or the data of the source volume is damaged after the system has been running for a period of time, the problem of performing fast data synchronization to make the data of the source volume and the destination volume reach a consistent state again; Based on the method of rapid synchronization of logical volume data based on data differences, the present invention only compares the used data blocks during data synchronization, which obviously reduces the scope of data comparison, and at the same time only synchronizes the changed data blocks during synchronization, effectively reducing the synchronization time. The amount of data

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
  • Logical volume rapid synchronization method based on data differentia
  • Logical volume rapid synchronization method based on data differentia
  • Logical volume rapid synchronization method based on data differentia

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] The present invention proposes a logical volume data rapid synchronization method based on data differences, which is further described in conjunction with the accompanying drawings and embodiments as follows:

[0032] According to the file system information of the source volume and the target volume, the method of the present invention finds the used data blocks on the respective logical volumes, compares the corresponding data block pairs on the source logical volume and the target logical volume, and calculates two characteristic values ​​of the data block pairs, If the two eigenvalues ​​are not the same, the data block pair is synchronized, otherwise, no synchronization is performed.

[0033] The method embodiment of the present invention specifically comprises the following steps:

[0034] This method assumes that the source logical volume L1 is on the machine M1, and the destination logical volume L2 is on the machine M2. The size of L1 and L2 is the same, and th...

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 rapid synchronization method of logical volumes based on data difference, which belongs to the technical field of computer data storage. The method comprises steps of finding out used data blocks on each logical volumes according to file system information of source volumes and destination volumes, comparing corresponding data block pairs on the source logical volumes and the destination logical volumes, then computing two eigenvalues of a data block pair, synchronizing the data block pair if the two eigenvalues are varied, or not synchronizing if not. The invention only compares the used data blocks in case of data synchronization, thereby obviously reducing the range of data comparison, and simultaneously only the changed data blocks are synchronized during synchronization, thereby effectively reducing the quantity of synchronized data.

Description

technical field [0001] The invention belongs to the technical field of computer data storage, and mainly solves the problem of quickly synchronizing the data of the source volume and the target volume when the data of the source volume and the target volume are inconsistent in a continuous data protection system to make the data consistent again. Background technique [0002] Nowadays, computers are becoming more and more important to individuals, enterprises and governments, especially important data stored in computers. Once these data are lost or destroyed, the loss will be difficult to estimate. Existing data protection technologies, such as RAID , remote mirroring, volume shadow copy service, snapshot, etc., can be divided into physical block level, logical volume level, file level or application level from the implementation level. Among them, data protection at the logical volume level has the advantages of being independent of upper-layer applications and specific ph...

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 Applications(China)
IPC IPC(8): G06F11/14G06F17/30
Inventor 汪东升刘宏詹球翔徐学雷生拥宏鞠秀芳鞠大鹏李泓
Owner TSINGHUA UNIV
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