A method for realizing high availability of virtual machine based on shared storage message queue

Abstract

A high-availability implementation method for a virtual machine based on a shared storage message queue, involving the field of cloud computing, comprising steps: a server program initializes a continuous space on the shared storage as a logical volume; allocates a plurality of continuous sectors from the logical volume As the sector pool of the client program; the client program obtains the configuration information of the sector pool and the number of the virtual machine that has enabled high availability; the client program sends a heartbeat message and updates the time of the virtual machine control block maintained by the client program stamp; the server program receives the heartbeat message, and uses the time stamp carried in the heartbeat message to update the time stamp of the virtual machine control block maintained by the server program. The invention avoids unnecessary downtime of the virtual machine, the heartbeat detection mechanism consumes less system resources, has high performance, and prolongs the service life of the shared storage disk.

Description

technical field [0001] The invention relates to the field of cloud computing, in particular to a method for realizing high availability of a virtual machine based on a shared storage message queue. Background technique [0002] In a cloud computing data center, a virtual machine usually runs on a physical server. When the physical server is powered off or other failures occur, the virtual machine running on it will also shut down, resulting in unexpected interruption of user services running in the virtual machine. If you want to ensure that the user's business can be automatically restored after being unexpectedly interrupted, you need to monitor the status of the virtual machine in real time. When a physical server fails, transfer the virtual machine on it to another server for restart. This is called virtual machine high availability. . High availability of the virtual machine requires the use of shared storage to store the disk files of the virtual machine, so that all ...

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Problems solved by technology

However, this method also has some disadvantages. Assuming that there are 10 servers in the data center, 30 virtual machines are running on each server, and a total of 300 virtual machines are all enabled with high availability of virtual machines, then: the space occupied by shared storage locks of virtual machines is relatively large , a total of 512×300=153600 bytes of storage space is required; virtual machine heartbeat detection occupies a large network bandwidth, and 512×300=153600 bytes will be transmitted every time the shared storage lock is read or updated; in order to obtain the status of the shared storage lock in real time, When the server updates the virtual machine shared storage lock, it will disable the cache and directly write to the disk, which will greatly shorten the disk life. The storage lock has bad sectors after 360000×10÷3600=1000 hours of use

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