Shared storage message queue-based implementation method for high availability of virtual machines

Abstract

The invention discloses a shared storage message queue-based implementation method for high availability of virtual machines and relates to the field of cloud computing. The shared storage message queue-based implementation method for the high availability of the virtual machines comprises the following steps: initializing a piece of contiguous space on shared storage by a server program to serve as a logical volume; distributing a plurality of contiguous sectors from the logical volume to serve as a sector pool of a client program; acquiring the configuration information of the sector pool and the number of a virtual machine, of which the high availability is enabled, by the client program; sending a heartbeat message by the client program, and updating the timestamp of a virtual machine control block maintained by the client program; receiving the heartbeat message by the server program, and updating the timestamp of the virtual machine control block maintained by the server program by utilizing the timestamp carried in the heartbeat message. According to the shared storage message queue-based implementation method disclosed by the invention, the unnecessary stop time of the virtual machines is avoided; system resource consumption is low by adopting a heartbeat detection mechanism; the performance is high; the service life of the disk of the shared storage is prolonged.

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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