【摘要】：在信息化的日益顯著的今天，數(shù)字化信息迅猛增長，人們對存儲的需求從容量到速度都不斷在提高。在這種背景下，云存儲服務(wù)誕生并得到迅速的發(fā)展，催生了一個云存儲時代。與此同時，利用云存儲服務(wù)的云存儲網(wǎng)關(guān)設(shè)備也得到了各界關(guān)注，特別是中小企業(yè)，對云網(wǎng)關(guān)的依賴逐漸增加。但是由于受到網(wǎng)速、帶寬和存儲設(shè)備本身等限制，云網(wǎng)關(guān)的速度一直是一個令人堪憂的問題。在此背景下，利用亞馬遜平臺提供的Amazon S3（Amazon Simple Storage Service，亞馬遜簡單存儲服務(wù)）云存儲服務(wù)，和NFS（Network File System，網(wǎng)絡(luò)文件系統(tǒng)）搭建了一個云網(wǎng)關(guān)，使它通過各類傳輸協(xié)議將云端存儲的數(shù)據(jù)共享給各類客戶端。在現(xiàn)有的云網(wǎng)關(guān)架構(gòu)上，以優(yōu)化總體性能為目的，設(shè)計并實現(xiàn)了用戶空間文件共享服務(wù)器，此服務(wù)器代替現(xiàn)有運行在內(nèi)核空間的NFS服務(wù)器，簡化了云網(wǎng)關(guān)本地運行流程中內(nèi)核態(tài)和用戶態(tài)的切換開銷，達(dá)到提高速度、加快響應(yīng)時間的效果。 現(xiàn)有云網(wǎng)關(guān)的NFS服務(wù)器運行在系統(tǒng)內(nèi)核空間下，它接收NFS客戶端傳遞來的文件請求，并將該請求傳遞給工作在云網(wǎng)關(guān)用戶空間下的S3FS（S3File System，S3文件系統(tǒng)），S3FS是云網(wǎng)關(guān)上負(fù)責(zé)將文件請求傳遞給S3的用戶空間文件系統(tǒng)，請求從被NFS服務(wù)器到S3FS接收到，并返回結(jié)果，要經(jīng)過多次內(nèi)核空間到用戶空間的數(shù)據(jù)拷貝，性能不佳，影響云網(wǎng)關(guān)的整體速度。針對以上原因，設(shè)計并實現(xiàn)了運行在用戶空間下的文件共享服務(wù)器，它可以直接和同樣運行在用戶空間下的S3FS協(xié)同工作，，無需經(jīng)過內(nèi)核空間，降低了內(nèi)核空間和用戶空間之間的切換開銷，達(dá)到提高云網(wǎng)關(guān)整體訪問速度的目的。 經(jīng)測試證明，用戶空間下的文件共享服務(wù)器能夠代替現(xiàn)有運行現(xiàn)有內(nèi)核態(tài)下的NFS與S3FS協(xié)同工作使云網(wǎng)關(guān)正常運行，掛載及各項文件操作能夠順利執(zhí)行。優(yōu)化后的云網(wǎng)關(guān)上傳下載等各項服務(wù)響應(yīng)速度均有提高，云網(wǎng)關(guān)的性能得到一定程度的提升。
[Abstract]:With the development of information technology, digital information is increasing rapidly, and the demand for storage is increasing from capacity to speed. In this context, cloud storage service was born and developed rapidly, which gave birth to a cloud storage era. At the same time, cloud storage gateway devices using cloud storage services have been concerned by all walks of life, especially for small and medium-sized enterprises, the dependence on cloud gateway is gradually increasing. However, due to the network speed, bandwidth and storage device itself constraints, cloud gateway speed has been a worrying problem. In this context, a cloud gateway is built using Amazon S3 (Amazon Simple Storage Service, Amazon simple Storage Service and NFS (Network File System, Network File system, which is provided by Amazon platform. Enable it to share data stored in the cloud to various clients through various transport protocols. Based on the existing cloud gateway architecture, the user space file sharing server is designed and implemented in order to optimize the overall capability. The server replaces the existing NFS server running in kernel space. The switching overhead of kernel state and user state in the local running process of cloud gateway is simplified to improve the speed and speed up the response time. The existing cloud gateway's NFS server runs in system kernel space and receives file requests from NFS clients. Passing the request to S3FS (S3File System,S3 File system) S3FS, which works in the cloud gateway user space, is the user space file system responsible for passing the file request to S3 on the cloud gateway. The request is received from the NFS server to the S3FS, and the result is returned. The performance of data copy from kernel space to user space is poor, which affects the overall speed of cloud gateway. For the above reasons, a file sharing server running in user space is designed and implemented. It can work directly with the S3FS running in the same user space without going through the kernel space. The switching overhead between kernel space and user space is reduced, and the whole access speed of cloud gateway is improved. It is proved by test that the file sharing server in user space can replace the existing NFS and S3FS in the kernel state to make the cloud gateway run normally and mount and all kinds of file operations can be executed smoothly. The response speed of the optimized cloud gateway is improved, and the performance of the cloud gateway is improved to some extent.
【學(xué)位授予單位】：華中科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2013
【分類號】：TP333

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