以太網(wǎng)光纖通道存儲技術(shù)的研究
發(fā)布時間:2018-04-05 13:45
本文選題:光纖通道 切入點:以太網(wǎng)光纖通道 出處:《華中科技大學》2013年碩士論文
【摘要】:以太網(wǎng)光纖通道(Fibre Channel over Ethernet,F(xiàn)CoE)可將光纖通道(FibreChannel,,F(xiàn)C)信息封裝到以太網(wǎng)信息內(nèi),光纖通道請求和數(shù)據(jù)可以通過以太網(wǎng)傳輸,是一種利用以太網(wǎng)實現(xiàn)高效塊存儲的組件技術(shù)。FCoE技術(shù)融合了現(xiàn)有的傳統(tǒng)局域網(wǎng)(LocalArea Network,LAN)和存儲區(qū)域網(wǎng)(StorageArea Network,SAN),可以在高速以太網(wǎng)(Ethernet)鏈路上同時傳輸IP和FCoE數(shù)據(jù)分組。隨著存儲網(wǎng)絡技術(shù)的發(fā)展,尤其是萬兆網(wǎng)絡的推出,發(fā)起端系統(tǒng)訪問目標端設備的帶寬也不斷提升,亟需改進傳統(tǒng)的底層的I/O請求隊列的結(jié)構(gòu),充分利用多核處理器提升并行處理I/O的能力,并滿足用戶存儲多樣性的需求。 針對FCoE技術(shù)對網(wǎng)絡融合(Network Convergence)的促進作用,從FC和FCoE的分層結(jié)構(gòu)入手,對FC協(xié)議、FCoE協(xié)議做了詳盡分析;并依照LINUX內(nèi)核中塊I/O子系統(tǒng)和SCSI(Small Computer System Interface)子系統(tǒng),詳細分析了塊設備(Block Device)和請求隊列(Request Queue)的結(jié)構(gòu)和作用。 根據(jù)發(fā)起端的FCoE協(xié)議處理模塊的需求,采用LINUX內(nèi)核的接口,完成了FCoE協(xié)議處理模塊的設計與實現(xiàn)。提出多請求隊列(Multi-Request Queue)結(jié)構(gòu),完成I/O請求的并行處理,改進了FCoE存儲系統(tǒng)總體性能;提出多請求隊列的選擇策略(Select Strategy),實現(xiàn)靈活分配,滿足了不同存儲環(huán)境下用戶存儲多樣性的需求。 測試結(jié)果表明多請求隊列能提升FCoE存儲系統(tǒng)的吞吐率和CPU效率,同時使用小請求的優(yōu)化策略能明顯提升小請求的IOPS(Input/Output Operations Per Second)和減少小請求的延遲。
[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.
【學位授予單位】:華中科技大學
【學位級別】:碩士
【學位授予年份】:2013
【分類號】:TP333;TP393.11
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