A study on Optimization for Virtual Machine’s Storage System associated with Cluster

• Main Authors: Chia-Chen Lin, 林佳辰
• Other Authors: Der-Min Tsai
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/89714418929982137390

碩士 === 崑山科技大學 === 數位生活科技研究所 === 101 === This study uses multiple PC with multiple subnet network built into the PC cluster environment. The KVM virtualization technique used to establish virtual computer classroom system. The standalone storage server provided NFS service for using by virtual machine’s hard disk. LVM mechanism used for rapid prepared the VM’s hard disk in this study. Thus, every VM with the same LVM image could be started at any base computer with KVM support in this computer classroom system. A friendly web site provided for operating by users. Complex management procedures were integrated into this web site, thus administrator could manage this system easily. This study provides two different Virtual Machine Connection modes: VNC (GUI no audio), SPICE (GUI with audio), to suit different teaching programs. The virtual PC classroom system were used by two coarse: “Linux operating system” and “Management and build for network server system” in Department of Information and Communication, Kunshan university. For optimizing the VM’s disk system performance, some Linux kernel parameters were adjusted in this study. Three loading balance mechanisms were tested for optimizing the operating performance in this system. In network traffic optimization, optimization of Linux kernel network packet size and other parameters, can read and write performance of the network to enhance the individual by 8.3%, 1.1%. In local hard drive optimization, the study by adding the parameter "data=wrtieback", can increase the hard disk write performance about 3% to 13%. In NFS share / mount parameter optimization, this study uses the NFS version 4 and with asynchronous write parameter "async" the NFS write performance increase about 121% to 271%.