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Disk heartbeat sending and receiving method suitable for dual-controller high-availability storage system

A storage system and disk technology, applied in the direction of input/output to record carrier, etc., can solve the problems of nodes unable to judge network failure, peer node offline, business interruption, etc., to save manual configuration and maintenance process and ensure high availability , the effect of improving reliability

Active Publication Date: 2019-03-22
EISOO SOFTWARE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, judging by the standard of high availability, risks such as power failure of the switch, network interface failure, and loose and disconnected network cables make the reliability of the network heartbeat worrying.
When network isolation occurs, the node cannot judge whether it is a network failure or the peer node is offline
In addition, since the management network carrying the heartbeat packet is separated from the data link, the node in the network isolation state cannot know whether the data link of the peer node is normal or not.
[0004] To sum up, network isolation will make the system face a dilemma: exporting data resources will cause business interruption, or dual control nodes will import resources at the same time, resulting in data inconsistency

Method used

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  • Disk heartbeat sending and receiving method suitable for dual-controller high-availability storage system
  • Disk heartbeat sending and receiving method suitable for dual-controller high-availability storage system
  • Disk heartbeat sending and receiving method suitable for dual-controller high-availability storage system

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Embodiment

[0042] Aiming at a shared high-availability storage system, the invention proposes a heartbeat sending and receiving method for reading and writing a shared disk. This method uses a shared storage pool as a storage resource, and automatically selects a disk in the storage pool as a heartbeat disk. The sending end writes the heartbeat mark in the heartbeat area of ​​the heartbeat disk, and the receiving end clears it after reading the heartbeat mark. When the disks in the storage pool change, the heartbeat disk is automatically updated to ensure continuous sending and receiving of disk heartbeats. The disk heartbeat of the dual-controller high-availability system is as follows: figure 1 shown.

[0043] The present invention includes following points:

[0044] 1. Automatically select the heartbeat disk

[0045] The disk that stores heartbeat marks is called a heartbeat disk. The present invention selects the first disk of the storage pool as the heartbeat disk. When change...

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Abstract

The invention relates to a disk heartbeat transmitting and receiving method suitable for a dual-control high-availability memory system. The disk heartbeat transmitting and receiving method comprises the following steps: 1) taking a shared storage pool as the storage resource of a dual-control node, and automatically selecting one piece of disk of the storage pool as a heartbeat disk; 2) writing a heartbeat sign into a heartbeat area of the heartbeat disk by a sending side, and clearing the heartbeat sign after a receiving side reads the heartbeat sign; and 3) when the disk of the storage pool changes, automatically updating the heartbeat disk to guarantee that disk heartbeat can be continuously received and transmitted. Compared with the prior art, the disk heartbeat transmitting and receiving method has the advantages that the node state and resource state sensing capability of the dual-control high-availability memory system can be improved.

Description

technical field [0001] The invention relates to the technical field of computer storage, in particular to a disk heartbeat transceiving method suitable for a dual-control high-availability storage system. Background technique [0002] As data access services increasingly require continuity, high availability has become one of the must-have features of storage systems. Small and medium-sized high-availability clusters generally use dual control nodes to provide users with data access services. When one of the nodes fails, the other node takes over the resources and services of the failed node to ensure business continuity. [0003] State awareness between nodes is one of the core modules of a highly available storage system. Sending heartbeat packets through the network is a common method for system status monitoring and perception. Network heartbeat has the characteristics of flexible deployment and rich status information. However, judging by the standard of high availa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/06
Inventor 黄思倜卢波李燕
Owner EISOO SOFTWARE
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