面向QoS的网络存储应用研究

发布时间：2018-02-02 23:22

本文关键词： 服务质量网络存储令牌桶算法流量控制　出处：《南京大学》2014年硕士论文　论文类型：学位论文

【摘要】：数字化信息的爆炸性增长,对存储系统的容量、可靠性、IO性能指标等参数提出了更高的要求,传统存储系统逐渐不能满足信息时代的要求,在这种背景下,存储区域网络SAN (Storage Area Network)得到了飞速的发展和广泛的应用。存储区域网络控制器SVC (SAN Volume Controller)是国际机器商业公司的一款中端存储区域网络控制器,目前SVC中没有服务质量QoS (Quality of Service)的概念。SVC对用户提供的存储服务没有针对不同用户做区别对待,在IO吞吐量接近系统上限时,由于拥塞现象的产生,系统性能出现明显恶化。为了改善SVC在高负荷下的性能,需要在SVC系统中添加服务质量控制,以实现针对不同用户或者不同应用提供不同级别的存储服务。本文工作基于这一项目背景而展开。为了实现SVC系统中的QoS,需要对不同属性的IO进行流量控制,本文通过使用令牌桶工具,并结合自定义队列,来达到对不同属性IO的流量控制。本文的主要工作有：1)比较并分析了几种QoS相关服务模型,阐述了实现技术以及相关的流量控制技术。2)针对SVC系统的需求,对QoS模块进行了需求分析和设计。3)对SVC系统中的QoS模块进行了实现,详细介绍了QoS模块的拦截器子模块、分类器子模块、流量整形子模块和日志子模块的实现,并给出实际测试实例。
[Abstract]:The explosive growth of digital information puts forward higher requirements for the storage system capacity, reliability and IO performance index. The traditional storage system can not meet the requirements of the information age. Storage area Network (SAN / Storage Area Network) has been rapidly developed and widely used. Storage area Network Controller (SVC). SAN Volume Controller is a mid-end storage area network controller for International Machine Business. At present, there is no QoS quality of Service concept in SVC. When IO throughput is close to the upper limit of the system, the system performance deteriorates obviously because of the congestion phenomenon. In order to improve the performance of SVC under high load, it is necessary to add quality of service control in the SVC system. In order to provide different levels of storage services for different users or different applications. This work is based on this project background. In order to realize the QoS in SVC system. There is a need to control the flow of IO with different attributes. This article uses the token bucket tool and combines with custom queues. The main work of this paper is to compare and analyze several QoS related service models. The realization technology and related flow control technology. 2) according to the demand of SVC system, the requirement analysis and design of QoS module. 3) the implementation of QoS module in SVC system. The implementation of interceptor sub-module, classifier sub-module, traffic shaping sub-module and log sub-module of QoS module are introduced in detail, and an actual test example is given.
【学位授予单位】：南京大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP393.09

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