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  本文選題：分級(jí)存儲(chǔ) + 文件系統(tǒng)��； 參考：《北京郵電大學(xué)》2014年碩士論文

【摘要】：存儲(chǔ)數(shù)據(jù)的飛速增長(zhǎng),要求企業(yè)的信息系統(tǒng)不僅要提供更大的存儲(chǔ)容量：同時(shí)還要提供更高的存儲(chǔ)速度。分級(jí)存儲(chǔ)是當(dāng)前存儲(chǔ)系統(tǒng)中解決容量和速度問題的重要技術(shù)。面對(duì)海量數(shù)據(jù)的存儲(chǔ)需求,分級(jí)存儲(chǔ)技術(shù)針對(duì)數(shù)據(jù)特性設(shè)計(jì)相應(yīng)的存儲(chǔ)系統(tǒng),對(duì)價(jià)值較高的數(shù)據(jù)和對(duì)系統(tǒng)性能影響較大的數(shù)據(jù)進(jìn)行優(yōu)化處理,以提供更好的性能。而固態(tài)盤(Solid State Drive, SSD)的廣泛應(yīng)用為設(shè)計(jì)現(xiàn)代分級(jí)存儲(chǔ)系統(tǒng)帶來了新的挑戰(zhàn)。固態(tài)盤是一種基于閃存.的新型存儲(chǔ)介質(zhì),提供了比傳統(tǒng)磁盤(Hard Disk Drive, HDD)更高的I/O性能,同時(shí)固態(tài)盤自身也引入了一些新的問題,如壽命磨損問題和成本高昂?jiǎn)栴}。 為了有效地將固態(tài)盤和傳統(tǒng)磁盤整合起來,構(gòu)建高效的分級(jí)存儲(chǔ)系統(tǒng),本文對(duì)傳統(tǒng)存儲(chǔ)技術(shù)、固態(tài)盤技術(shù)和Linux文件系統(tǒng)進(jìn)行了研究,設(shè)計(jì)并開發(fā)了一個(gè)基于SSD和HDD的分級(jí)文件系統(tǒng)FMCFS。FMCFS文件系統(tǒng)實(shí)現(xiàn)了對(duì)固態(tài)盤空間和磁盤空間的高效管理,并能統(tǒng)計(jì)出用戶對(duì)文件數(shù)據(jù)塊的長(zhǎng)期歷史訪問信息,識(shí)別出文件系統(tǒng)中的熱點(diǎn)數(shù)據(jù)塊,并在文件數(shù)據(jù)塊級(jí)別對(duì)固態(tài)盤和磁盤中的數(shù)據(jù)進(jìn)行自動(dòng)的遷移和回遷。本文對(duì)設(shè)計(jì)分級(jí)文件系統(tǒng)的關(guān)鍵問題進(jìn)行了研究,設(shè)計(jì)并實(shí)現(xiàn)了高效管理大規(guī)模元數(shù)據(jù)的策略、識(shí)別文件中熱點(diǎn)數(shù)據(jù)塊的算法,以及在內(nèi)核中通過I/O重定向進(jìn)行數(shù)據(jù)遷移和回遷的方法。 本文的結(jié)果顯示,分級(jí)文件系統(tǒng)FMCFS把高訪問頻率和高價(jià)值的文件數(shù)據(jù)塊自動(dòng)地遷移到固態(tài)盤上,可以充分利用固態(tài)盤的高I/O吞吐量特性和磁盤的大容量低價(jià)格特性,從而提供了一種性價(jià)比合理的高性能自動(dòng)分級(jí)存儲(chǔ)方案,并能有效減少固態(tài)盤的磨損問題對(duì)存儲(chǔ)系統(tǒng)的影響。
[Abstract]:With the rapid growth of storage data, enterprise information systems should not only provide greater storage capacity, but also provide higher storage speed. Hierarchical storage is an important technology to solve the problem of capacity and speed in current storage system. In order to provide better performance, the hierarchical storage technology designs the corresponding storage system in view of the characteristics of the data, and optimizes the processing of the high-value data and the data that has a great impact on the performance of the system in order to provide better performance. The wide application of solid State Drive, SSD) brings new challenges to the design of modern hierarchical storage system. A solid-state disk is based on flash memory. The new storage media provides better I / O performance than the traditional hard Disk Drive, HDD), while the solid-state disk itself introduces some new problems, such as lifetime wear and high cost. In order to integrate the solid-state disk and the traditional disk effectively and build an efficient hierarchical storage system, the traditional storage technology, solid-state disk technology and Linux file system are studied in this paper. A hierarchical file system, FMCFS.FMCFS file system based on SSD and HDD, is designed and developed to efficiently manage the solid disk space and disk space. The hot data blocks in the file system are identified, and the data in the solid disk and disk are automatically migrated and returned at the file data block level. In this paper, the key problems of designing hierarchical file system are studied, and the strategy of efficiently managing large-scale metadata and the algorithm of identifying hot data blocks in files are designed and implemented. And the method of data migration and return through I / O redirect in kernel. The results of this paper show that the hierarchical file system FMCFS automatically migrates the high access frequency and high value file data blocks to the solid state disk, which can make full use of the high I / O throughput characteristics of the solid state disk and the large capacity and low price characteristics of the disk. Thus, a high performance automatic hierarchical storage scheme with reasonable performance and price ratio is provided, and the effect of solid state disk wear on storage system is effectively reduced.
【學(xué)位授予單位】：北京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TP333

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本文編號(hào)：1928169