Optimised Migrate Virtual Machine Rejuvenation

Sanheji Manel¹, Azizi Ridha², Maaloul Alia¹

¹Institute of Higher Technological Studies of Gabes, Gabes, Tunisia.
²Institute of Higher Technological Studies of Sousse, Sousse, Tunisia.

DOI: 10.4236/jcc.2015.38004                

Abstract

Server virtualization is an essential component in virtualized software infrastructure such as cloud computing. Virtual machines are generated through a software called virtual machine monitor (VMM) running on physical servers. The risks of software aging caused by aging-related bugs affect both VM and VMM. As a result, service reliability degrades may generate huge financial losses to companies. This paper presents an analytic model using stochastic reward nets for time-based rejuvenation techniques of VMM and VM. We propose to manipulate the VM behavior while the VMM rejuvenation is according to the load on the system. Using a previous Petri net model of virtualized server, we performed an algorithm in order to optimize rejuvenation technique and achieve high availability. So we perform Migrate-VM rejuvenation or Warm-VM rejuvenation while there are current jobs in the system. Although Migrate-VM rejuvenation is better than Warm-VM rejuvenation in steady state availability, it can’t be always performed as it depends on the capacity of the other host. When the queue is empty and the virtual machine has no current jobs to serve, we propose to combine both VMM rejuvenation and VM rejuvenation. We show that the proposed technique can enhance the availability of VMs.

Keywords

Component, Component, Availability, Data Center, Rejuvenation, Virtual Machine, Petri Net

Conflicts of Interest

The authors declare no conflicts of interest.

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