Efficiently synchronizing virtual machines in cloud computing environments

Shuntaro Tonosaki, Hiroshi Yamada, Kenji Kono

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Infrastructure as a Service (IaaS), a form of cloud computing, is gaining attention for its ability to enable efficient server administration in dynamic workload environments. In such environments, however, updating the software stack or content files of virtual machines (VMs) is a time-consuming task, discouraging administrators from frequently enhancing their services and fixing security holes. This is because the administrator has to upload the whole new disk image to the cloud platform via the Internet, which is not yet fast enough that large amounts of data can be transferred smoothly. Although the administrator can apply only incremental updates directly to the running VMs, he or she has to carefully consider the type of update and perform operations on all the running VMs, such as application restarts and operating system reboots. This is a tedious and error-prone task. This paper presents a technique for synchronizing VMs with less time and lower administrative burden. We introduce the Virtual Disk Image Repository, which runs on the cloud platform and automatically updates the virtual disk image and the running VMs with only the incremental update information.We also show a mechanism that performs necessary operations on the running VM such as restarting server processes, based on the types of files that are updated. We implemented a prototype on Linux 2.6.31.14 and Amazon Elastic Compute Cloud. The experimental results show that our technique can synchronize VMs in an orderof- magnitude shorter time than the conventional disk-image-based VM cloning method. Although our system imposes about 30% overhead on the developer's environment, it imposes no observable overhead on public servers and correctly performs necessary operations to put updates into effect.

Original languageEnglish
Title of host publicationProceedings - 2011 3rd IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2011
Pages154-162
Number of pages9
DOIs
Publication statusPublished - 2011 Dec 1
Event2011 3rd IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2011 - Athens, Greece
Duration: 2011 Nov 292011 Dec 1

Publication series

NameProceedings - 2011 3rd IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2011

Other

Other2011 3rd IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2011
CountryGreece
CityAthens
Period11/11/2911/12/1

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Keywords

  • Could Computing
  • Infrastructure as a Service
  • System Virtualization
  • Virtual Machine Updates

ASJC Scopus subject areas

  • Computational Theory and Mathematics
  • Computer Networks and Communications

Cite this

Tonosaki, S., Yamada, H., & Kono, K. (2011). Efficiently synchronizing virtual machines in cloud computing environments. In Proceedings - 2011 3rd IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2011 (pp. 154-162). [6133139] (Proceedings - 2011 3rd IEEE International Conference on Cloud Computing Technology and Science, CloudCom 2011). https://doi.org/10.1109/CloudCom.2011.30