以太网光纤通道存储技术的研究

发布时间：2018-04-05 13:45

本文选题：光纤通道　切入点：以太网光纤通道　出处：《华中科技大学》2013年硕士论文

【摘要】：以太网光纤通道（Fibre Channel over Ethernet，FCoE）可将光纤通道（FibreChannel，，FC）信息封装到以太网信息内，光纤通道请求和数据可以通过以太网传输，是一种利用以太网实现高效块存储的组件技术。FCoE技术融合了现有的传统局域网（LocalArea Network，LAN）和存储区域网（StorageArea Network，SAN），可以在高速以太网（Ethernet）链路上同时传输IP和FCoE数据分组。随着存储网络技术的发展，尤其是万兆网络的推出，发起端系统访问目标端设备的带宽也不断提升，亟需改进传统的底层的I/O请求队列的结构，充分利用多核处理器提升并行处理I/O的能力，并满足用户存储多样性的需求。针对FCoE技术对网络融合（Network Convergence）的促进作用，从FC和FCoE的分层结构入手，对FC协议、FCoE协议做了详尽分析；并依照LINUX内核中块I/O子系统和SCSI（Small Computer System Interface）子系统，详细分析了块设备（Block Device）和请求队列（Request Queue）的结构和作用。根据发起端的FCoE协议处理模块的需求，采用LINUX内核的接口，完成了FCoE协议处理模块的设计与实现。提出多请求队列（Multi-Request Queue）结构，完成I/O请求的并行处理，改进了FCoE存储系统总体性能；提出多请求队列的选择策略（Select Strategy），实现灵活分配，满足了不同存储环境下用户存储多样性的需求。测试结果表明多请求队列能提升FCoE存储系统的吞吐率和CPU效率，同时使用小请求的优化策略能明显提升小请求的IOPS（Input/Output Operations Per Second）和减少小请求的延迟。
[Abstract]:Ethernet fiber channel fiber Channel over Ethernet can encapsulate fiber channel fibre Channel FCC information into Ethernet information, and fiber channel requests and data can be transmitted via Ethernet.FCoE is a component technology using Ethernet to realize high efficiency block storage. FCoE technology combines the existing traditional Local area Network (LAN) and Storage area Network (Storage area Network) San, which can transmit IP and FCoE data packets simultaneously on the Ethernet Ethernet link.With the development of the storage network technology, especially the introduction of the Gigabit network, the bandwidth of the initiator system accessing the target device is also increasing, so it is urgent to improve the structure of the traditional I / O request queue.The ability of parallel processing of I / O can be improved by making full use of multi-core processors, and the storage diversity of users can be satisfied.The structure and function of Block device (Block device) and request queue (request queue) are analyzed in detail.According to the requirements of the FCoE protocol processing module in the initiator, the design and implementation of the FCoE protocol processing module are completed by using the interface of the LINUX kernel.It meets the requirements of user storage diversity in different storage environments.The test results show that the multi-request queue can improve the throughput and CPU efficiency of the FCoE storage system, at the same time, using the small request optimization strategy can significantly increase the IOPS(Input/Output Operations Per second time of the small request and reduce the delay of the small request.
【学位授予单位】：华中科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TP333;TP393.11

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