计算机工程与应用Issue(2)：1-6,6.DOI:10.3778/j.issn.1002-8331.1506-0048
一种用于虚拟集群的镜像按需分发框架
On-demand image distribution framework for virtual clusters
摘要
Abstract
In the process of virtual clusters deployment, transmission of mass image data leads to longer boot time, and the scalability and efficiency are affected. An on-demand image distribution framework is proposed to reduce data trans-mission and avoid the bottlenecks of storage nodes and network based on the character that virtual machines only access limited data blocks in booting and running. Further, differentiated data block division method is proposed that takes into account the image accessing performance and distribution efficiency:the bigger division block size is used in deduplication processing to enhance index management efficiency and data accessing performance, whereas data in the boot region is divided with smaller data block size to improve data transmission efficiency. Distribution experiment of 50 image files shows that, compared with the full-image distribution, on-demand distribution can improve the distribution speed of 13~22 times.关键词
虚拟集群/虚拟机/镜像分发/按需分发Key words
virtual clusters/virtual machine/image distribution/on-demand distribution分类
信息技术与安全科学引用本文复制引用
刘圣卓,姜进磊,杨广文..一种用于虚拟集群的镜像按需分发框架[J].计算机工程与应用,2016,(2):1-6,6.基金项目
国家自然科学基金（No.61170210，No.61433008，No.U1435216）；国家“863”高技术项目（No.2014AA01A302）。 （）
