Abstract:

The deployment of OpenStack,an opensource cloud computing platform,has gained popularity for the study of IaaS (Infrastructure as a Service),whereas its resource utilization rate is still low.In order to address this problem,we present a novel image management system,Milance,based on Multilevel Index Glance to replace the existing one which is characterized with a long VM startup latency,a slow snapshop and a large image pool.Experimental results show that in contrast to the existing image management system,Milance not only reduces the latency of VM startups and the cost of snapshots,but also saves more image space.

Key words: cloud computing;virtual machine;image sharing;snapshot