Unlock instant, AI-driven research and patent intelligence for your innovation.

A data migration method and device

A technology for data and migration, applied in the storage field, can solve the problems of wasting input and output interface resources and large waste of resources, and achieve the effects of improving migration performance and reliability, reducing waste, and reducing impact

Active Publication Date: 2021-03-23
CHENGDU HUAWEI TECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, it is necessary to waste the input and output interface resources for reading data once, the input and output interface resources for writing data once, and the input and output interface resources for deleting data once, which is a big waste of resources.

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
  • A data migration method and device
  • A data migration method and device
  • A data migration method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0044] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0045] The term "and / or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and / or B, which can mean: A exists alone, A and B exist simultaneously, and A and B exist alone. There are three cases of B. In addition, the character " / " in this article, unless otherwise specified, generally indicates that the contextual objects are an "or" relationship.

[0046] In addition, it should be understood that the "plurality" mentioned in the embodiment of the present application refers to two or more than two. Words such as "first" and "second" are only used for the purpose of dis...

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

A data migration method and device, the method comprising: in the process of migrating data from a second node to a first node, the first node reads the data to be migrated and the version number of the data to be migrated from the second node and read from at least one third node the version number of the data belonging to the same first service as the data to be migrated, and the data of the first service is distributed and stored in the second node and at least one of the third nodes; Then, when the first node determines that the version number of the data to be migrated read from the second node is different from the version number of the data read from any one of the third nodes, the first node discards the data from the second node. The data to be migrated read by the node. In this way, during data migration, by comparing the version number of the data to be migrated with the version number of the data in other nodes belonging to the same business as the data to be migrated, the data to be deleted can be filtered out, which can reduce the cost of invalid migration and subsequent deletion of IO resources. waste.

Description

technical field [0001] The present application relates to the field of storage technologies, and in particular to a data migration method and device. Background technique [0002] With the rapid increase of Internet users and the diversified development of services, more and more data (for example, user data, service configuration data, etc.) need to be stored in a storage system so as to be used for analysis and guidance of services. The cluster storage system is widely used in data storage because of its large capacity and easy expansion. [0003] Please refer to Figure 1A , which is an architecture in the cluster storage system. In FIG. 1, a management node A and three storage nodes are deployed in the cluster storage system, which are respectively marked as Node1, Node2 and Node3. Multiple distributed logical storage units (net logic unit number, NLUN) are set in the cluster storage system, for example, NLUN1 and NLUN2 can be set in the cluster storage system, and eac...

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): G06F3/06
CPCG06F3/0604G06F3/0625G06F3/0647G06F3/067G06F3/0649G06F3/0653G06F3/0619G06F3/0652
Inventor 王英
Owner CHENGDU HUAWEI TECH