AVSS:可适应性虚拟存储系统

设计和实现了一种具有适应能力的虚拟存储系统--AVSS,同时提供存储系统容量虚拟化和性能虚拟化管理.AVSS具有如下特征:1)采用扩展的YFQ算法控制带宽资源分配.实现虚拟设备间的性能隔离和性能保证;2)采用分级结构和动态映射机制灵活有效地管理异构存储资源,为资源按需分配提供基础;3)通过数据访问频度统计和应用动态行为分析指导存储布局重组.测试结果表明了设计的正确性,AVSS能够隔离不同应用避免性能干扰,可以按照应用行为调整存储布局,在提高存储系统性能的同时提高了存储资源的利用率.

AVSS: An Adaptable Virtual Storage System

An adaptable virtual storage system(AVSS)is designed and implemented,which has the ability of storage capacity and performance virtualization management simultaneously.AVSS has following features:1)Using the extended YFQ algorithm to control bandwidth resource allocation for performance isolation of virtual devices;2)Using the hierarchical structure and dynamic address mapping mechanism to effectively and flexibly manage the heterogeneous storage resources for resource allocation on-demand;3)Using the data access frequency statistics and applying dynamic behavior analysis to guide the layout reorganization.Test results show that our design is correct and AVSS can improve the storage system performance while increase the storage resource utilization.