Heartbeat realization method and device

Abstract

The application of the invention provides a heartbeat realization method and device, wherein the method comprises the following steps: executing a first heartbeat writing operation periodically according to a first value, wherein the first heartbeat writing operation is to write a sequence count value in a shared memory space; when detecting that the load of a node is overloaded, switching the node from the normal state to the abnormal state, stopping executing the first heartbeat writing operation, acquiring a newest sequence count value M of the first heartbeat writing operation, updating the heartbeat of the node periodically to a second value, wherein the second value is higher than the first value; periodically executing a second heartbeat writing operation according to the second value, and sending the written sequence count value to other nodes except the node, wherein the second heartbeat writing operation is to write the sequence count value to the node, and the initial value of the written sequence count value is M or M+1.

Description

technical field [0001] The present application relates to the field of storage technologies, and in particular to a method and device for realizing heartbeat. Background technique [0002] In a shared file system, multiple nodes (for example, hosts) form a cluster. All nodes in the cluster can access the same storage space. When any node reads and writes a file in the storage space, other nodes can still access the file. , nodes negotiate read and write permissions through distributed locks. [0003] In the shared file system, the read-write heartbeat mechanism is used to determine whether the node is online. Specifically, in figure 1 The shared file system shown includes node 1 (node ​​ID is 1), node 2 (node ​​ID is 2) and node 3 (node ​​ID is 3), these three nodes can access the same logical disk (or It is called a volume), and the read and write heartbeat operation is performed from the fixed base address position of the logical disk. For example, the base address posi...

AI Technical Summary

Problems solved by technology

[0006] In the above-mentioned read-write heartbeat mechanism, when the node load is heavy, it may cause a delay in the read-write heartbeat operation, especially the delay in the write heartbeat operation. For example, the process of writing the sequence count value to the logical disk Slow, unable to write in, etc.

Images