本文關(guān)鍵詞：基于IP-SAN的智能固態(tài)緩存網(wǎng)絡(luò)存儲(chǔ)系統(tǒng)的研究　出處：《南京林業(yè)大學(xué)》2012年碩士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： IP-SAN 獨(dú)立冗余磁盤(pán)陣列 智能固態(tài)緩存 邏輯卷管理 iSCSI 網(wǎng)絡(luò)存儲(chǔ)

【摘要】：隨著云存儲(chǔ)時(shí)代的到來(lái)，，網(wǎng)絡(luò)數(shù)據(jù)存儲(chǔ)不僅僅在容量上呈爆炸式增長(zhǎng)，在性能和可靠性上也有越來(lái)越高的要求。而現(xiàn)今的機(jī)械硬盤(pán)構(gòu)建的SAN存儲(chǔ)系統(tǒng)，在大容量以及順序讀寫(xiě)方面雖然具有很大優(yōu)勢(shì)，但已經(jīng)無(wú)法滿(mǎn)足社會(huì)發(fā)展所帶來(lái)的新的需求，例如虛擬技術(shù)以及基于數(shù)據(jù)庫(kù)的視頻點(diǎn)播、電子商務(wù)等應(yīng)用，對(duì)快速隨機(jī)訪(fǎng)問(wèn)要求很高。固態(tài)硬盤(pán)以其高隨機(jī)性能、超低延時(shí)等優(yōu)勢(shì)倍受青睞，但其高昂的價(jià)格讓存儲(chǔ)界望塵莫及。 鑒于此，本文研究并實(shí)現(xiàn)了智能固態(tài)緩存技術(shù)，提出了基于IP-SAN的具有高隨機(jī)性能的智能固態(tài)緩存網(wǎng)絡(luò)存儲(chǔ)系統(tǒng)解決方案。本課題主要研究?jī)?nèi)容如下： 1、闡述了現(xiàn)階段國(guó)內(nèi)外對(duì)隨機(jī)性能的研究狀況，研究了主流網(wǎng)絡(luò)存儲(chǔ)架構(gòu)特點(diǎn)。研究了RAID技術(shù)，分析和比較了不同RAID級(jí)別實(shí)現(xiàn)機(jī)制及其特點(diǎn)。 2、詳細(xì)研究了linux內(nèi)核的塊設(shè)備和設(shè)備映射機(jī)制，分析了linux內(nèi)核中數(shù)據(jù)的I/O請(qǐng)求方式和實(shí)現(xiàn)機(jī)制，研究了linux內(nèi)核實(shí)現(xiàn)邏輯設(shè)備與物理設(shè)備的映射過(guò)程。詳細(xì)介紹了映射設(shè)備、映射目標(biāo)和映射表三者的結(jié)構(gòu)和它們之間的關(guān)系�；诖耍O(shè)計(jì)并實(shí)現(xiàn)了智能固態(tài)緩存技術(shù)，極大的提升了存儲(chǔ)系統(tǒng)的隨機(jī)性能。著重闡述了智能固體緩存的邏輯架構(gòu)和實(shí)現(xiàn)機(jī)制，介紹了其創(chuàng)建方法和各功能函數(shù)的具體實(shí)現(xiàn)，并在本地磁盤(pán)陣列上運(yùn)用該智能固態(tài)緩存功能對(duì)隨機(jī)讀寫(xiě)性能進(jìn)行了比較。 3、研究了網(wǎng)絡(luò)存儲(chǔ)系統(tǒng)中的邏輯卷管理和iSCSI協(xié)議的實(shí)現(xiàn)。舉例說(shuō)明了邏輯卷管理的實(shí)現(xiàn)過(guò)程，研究了iSCSI的體系結(jié)構(gòu)、錯(cuò)誤恢復(fù)機(jī)制，以及會(huì)話(huà)實(shí)現(xiàn)過(guò)程。iSCSI網(wǎng)絡(luò)采用雙網(wǎng)卡聚合，研究了網(wǎng)卡聚合的原理和創(chuàng)建方法，以實(shí)現(xiàn)負(fù)載均衡和故障切換技術(shù)，進(jìn)一步提升存儲(chǔ)系統(tǒng)的性能。 4、最后對(duì)整個(gè)網(wǎng)絡(luò)存儲(chǔ)系統(tǒng)的功能、性能和穩(wěn)定性進(jìn)行了全面詳細(xì)的測(cè)試。并對(duì)測(cè)試結(jié)果進(jìn)行了比較和分析。
[Abstract]:With the arrival of cloud storage era, network data storage not only has explosive growth in capacity, but also has more and more high requirements in performance and reliability. Nowadays, SAN storage system is constructed by mechanical hard disk. Although it has great advantages in large capacity and sequential reading and writing, it can not meet the new needs brought by social development, such as virtual technology, database based video on demand, e-commerce and other applications. The demand for fast random access is very high. Solid state hard disk is very popular for its advantages of high random performance and ultra-low delay, but its high price makes the storage world out of reach. In view of this, this paper studies and implements the intelligent solid state cache technology. An intelligent solid state cache network storage system with high random performance based on IP-SAN is proposed. The main contents of this paper are as follows: 1. The research status of random performance at home and abroad, the characteristics of mainstream network storage architecture, and the RAID technology are described. The implementation mechanism and characteristics of different RAID levels are analyzed and compared. 2. The block device and device mapping mechanism of linux kernel is studied in detail, and the I / O request mode and implementation mechanism of data in linux kernel are analyzed. The mapping process between logical devices and physical devices in linux kernel is studied. The structure of mapping devices, mapping targets and mapping tables and their relationships are introduced in detail. The intelligent solid state cache technology is designed and implemented, which greatly improves the random performance of the storage system. The logical architecture and implementation mechanism of the intelligent solid state cache are described in detail. The creation method and the realization of each function function are introduced, and the performance of random reading and writing is compared by using the intelligent solid state cache function on the local disk array. 3. The realization of logical volume management and iSCSI protocol in network storage system is studied, the implementation process of logical volume management is illustrated, and the architecture of iSCSI and the mechanism of error recovery are studied. The principle and creation method of network card aggregation are studied in order to realize load balancing and failover technology and further improve the performance of storage system. Finally, the function, performance and stability of the whole network storage system are tested in detail, and the test results are compared and analyzed.
【學(xué)位授予單位】：南京林業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TP333

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