| 摘要(英) |
Automatic fault tolerance for virtual machine usually uses a backup virtual machine to protect the primary virtual machine, which provides services to end users. The primary and the backup virtual machines have to run on different physical machines and keep their states synchronized. As the primary virtual machine fails, the backup virtual machine has to take the control and keeps the services on the virtual machine alive. Based on our study, the existing open-source projects of virtual machine fault tolerance, Kemari and Micro-Checkpointing, do not have good performance when hosting a network service. Therefore, we have proposed a novel design of a fault-tolerant virtual machine based on KVM, namely M –FTVM. We have also implemented a prototype of the proposed fault-tolerant virtual machine, and keep working on improving its performance and correctness. This paper focus on the issue of the virtual machine life cycle on the original M-FTVM. That is, the backup virtual machine may cause the primary virtual machine unstable and affects the life cycle of virtual machine. Therefore, we propose a new design for the virtual machine life cycle of M-FTVM, and modified the implementation of M-FTVM accordingly. The experiment results show that, the new design does not cause much overhead when compared with the original M-FTVM. |
| 參考文獻 |
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