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Distributed storage based multi-path I/O transmission method

A technology of distributed storage and transmission method, which is applied in the field of multi-path I/O transmission of distributed storage, can solve problems such as performance bottlenecks, system single-point failures, difficulty in meeting new requirements for system availability and reliability, and achieve a balanced I/O /O load, increase throughput, and reduce the effect of single point failure

Inactive Publication Date: 2016-04-13
STATE GRID CORP OF CHINA +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the I / O subsystem, single-path I / O transmission errors are the root cause of the system's single point of failure. It is difficult to meet the new requirements of new I / O path technology and modern storage for system availability and reliability; In the I / O path, data can only be transmitted in one I / O channel, which becomes a performance bottleneck

Method used

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Examples

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Embodiment Construction

[0016] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with examples, which are only used to explain the present invention and do not constitute a limitation to the protection scope of the present invention.

[0017] A multi-path I / O transmission method for distributed storage, comprising the following steps:

[0018] S01: Deploy the Target service on each node of the distributed storage cluster, map the virtual hard disk divided on the distributed storage cluster to the client, and connect the Target service port on each node through the Initiator on any server;

[0019] S02: When scanning the SCSI bus, when the UUID of a SCSI device is checked out, all scanned SCSI devices will search for a matching UUID, and each time a new UUID is scanned, it will be loaded into the SCSI device;

[0020] S03: In the SCSI middle layer multi-path, block device I / O request processing is first inserted into the...

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Abstract

The invention belongs to the technical field of data storage and discloses a distributed storage based multi-path I / O transmission method. The method comprises: deploying a Target service in each node of a distributed storage cluster; mapping a virtual hard disk obtained by partitioning in the distributed storage cluster to a client; and connecting Target service ports of all nodes through Initiators in any server. A multi-path I / O technology aims to enhance the availability and reliability of a storage system and reduce single point failures caused by single path data transmission errors; and meanwhile, the I / O loads of the system can be better balanced, the throughput rate of the system can be increased, and the performance better than that of a single path can be provided.

Description

technical field [0001] The invention belongs to the technical field of data storage, and relates to a data transmission method, in particular to a distributed storage multi-path I / O transmission method. Background technique [0002] The I / O path technology refers to the technology used to transmit data between the host and the storage device. In the I / O subsystem, single-path I / O transmission errors are the root cause of the system's single point of failure. It is difficult to meet the new requirements of new I / O path technology and modern storage for system availability and reliability; In the I / O path, data can only be transmitted in one I / O channel, which becomes a performance bottleneck. Contents of the invention [0003] Purpose of the invention: The purpose of the present invention is to solve data transmission errors caused by single-path I / O transmission errors in the prior art, and provide a safe and reliable multi-path I / O transmission method for distributed sto...

Claims

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Application Information

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IPC IPC(8): G06F3/06
CPCG06F3/0664G06F3/061G06F3/067
Inventor 柏广宇谢宾铭李东辉陈艳俞俊吴小志朱广新郑磊程聪
Owner STATE GRID CORP OF CHINA
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