Teleporting Virtual Machine over Wide-Area Network
碩士 === 國立交通大學 === 資訊科學與工程研究所 === 101 === Virtual machine (VM) migration is one of the key features of infrastructure-as-a-service (IaaS) cloud computing. Conventional VM migration focuses on transferring a VM’s memory and CPU states across host machines. The VM’s disk image has to be accessible to b...
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| Format: | Others |
| Language: | en_US |
| Published: |
2012
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| Online Access: | http://ndltd.ncl.edu.tw/handle/79249647130980584522 |
| Summary: | 碩士 === 國立交通大學 === 資訊科學與工程研究所 === 101 === Virtual machine (VM) migration is one of the key features of infrastructure-as-a-service (IaaS) cloud computing. Conventional VM migration focuses on transferring a VM’s memory and CPU states across host machines. The VM’s disk image has to be accessible to both the source and destination host machines during the migration. Therefore, conventional virtual machine migration is limited to host machines that reside on the local area network (LAN) since sharing storage across wide-area network (WAN) is very inefficient. However, as more IaaS clouds are being constructed around the globe, VM migration will soon be needed for host machines that are far apart and can only be reached from each other over the wide-area network. We propose a system to allow efficient VM migration over WAN. The key technique is a mechanism to rebuild VM storage by using pre-calculated indexes. This mechanism not only reducing amount of data transferring over WAN but also decrease total migration time. Our experiment result indicates that about average 66% of data is reduced on transferring and 59% time is saved during migration. Improve the migration performance greatly.
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