实验五NFS文件系统实验

实验五NFS文件系统实验一、实验目的掌握Linux系统之间资源共享和互访方法；掌握NFS服务器和客户端的安装与配置。二、实验设备硬件：EduKit-IV嵌入式教学实验平台、Mini2410核心子板、PC机；软件：Windows2000/NT/XP、Ubuntu8.04、其他嵌入式软件包。实验内容利用rpm命令安装软件包的方法；安装、配置NFS服务器并启动Linux系统之间资源共享。实验步骤：1）单击菜单应用程序->附件->终端打开终端，设置环境变量；$source/usr/local/src/EduKit-IV/Mini2410/set_env_linux.sh2）安装配置nfs服务：$cd$SIMPLEDIR/6.5-nfs-server$sudoshlocal-nfs-install.sh安装脚本如下：#!/bin/bash##E-pack-install.sh-InstallNFSserver.##Copyright(C)2002-2007<>33#Created.lusi<luce_008@163.com>sudoapt-getinstallnfs-kernel-servernfs-commonportmapcd/etc/default/sudosed's/OPTIONS="-i"/#OPTIONS="-i"/'portmap>portmap-tempsudorm-fportmapsudomvportmap-tempportmapcd/etc/sudosed's/#\/srv\/nfs4\/homesgss\/krb5i(rw,sync)/\/home\/example\/nfs*(rw,sync)/'exports>exports-tempsudorm-fexportssudomvexports-tempexportssudoexportfs-rsudo/etc/init.d/nfs-kernel-serverrestart3）拷贝6.3节中已经创建好的文件结构$NFSDIR目录下：$cp-av../6.3-busybox/root-mini/*$NFSDIR4）连接好交叉串口线（连接实验平台COM2到PC端串口），连接好交叉网线（连接实验平台主板网卡接口到PC端网卡）。点击ubuntu菜单栏右边的网络图标，弹出以下界面：图6-5-1网络设置界面6）在界面中点击解锁按钮，弹出对话框要求输入当前用户密码，正确输入后，将激活该菜单，如下图所示：图6-5-2激活网络设置界面7）选中“有线连接”，点击属性按钮，在弹出的界面中按照下图所示设置网络IP（其中IP地址可以任意设置，必须为跟实验平台主板网卡IP在同一网段）：图6-5-3设置网络IP8）设置完成后点击确定按钮退出，则网络设置界面将显示如下：图6-5-4设置正确后的网络9）此时运行ubuntu的终端，在终端中输入命令查看当前网络设置，如果正确则显示如下：$ifconfigeth0Linkencap:以太网硬件地址00:16:36:3b:c5:1einet地址:90广播:55掩码:inet6地址:fe80::216:36ff:fe3b:c51e/64Scope:LinkUPBROADCASTRUNNINGMULTICASTMTU:1500接收数据包:773错误:0丢弃:0过载:0帧数:0发送数据包:1722错误:0丢弃:0过载:0载波:0碰撞:0发送队列长度:1000接收字节:113752(111.0KB)发送字节:1978362(1.8MB)中断:20跃点数:1loLinkencap:本地环回inet地址:掩码:inet6地址:::1/128Scope:HostUPLOOPBACKRUNNINGMTU:16436跃点数:1接收数据包:1488错误:0丢弃:0过载:0帧数:0发送数据包:1488错误:0丢弃:0过载:0载波:0碰撞:0发送队列长度:0接收字节:81664(79.7KB)发送字节:81664(79.7KB)10）运行minicom，给实验平台加电，启动vivi并按空格键进入到vivi的命令行界面，修改vivi引导参数：vivi>paramsetlinux_cmd_line"root=/dev/nfsnfsroot=90:/home/example/nfsip=00:90:::EDUK4:eth1:offconsole=ttySAC1,115200mem=64Minit=/linuxrcnoinitrd"vivi>paramsave//注释：输入次命令将会保存修改后的vivi参数信息到Flash，可以不保存6）输入命令启动内核，可以看到正确引导nfs文件系统。vivi>boot7）minicom终端将正确启动linux：VIVIversion0.1.4(embest@embest-laptop)(gccversion2.95.320010315(release))#TMMUtablebaseaddress=0x33DFC000Succeedmemorymapping.NANDdevice:ManufactureID:0xec,ChipID:0x76(SamsungK9D1208V0M)Couldnotfoundstoredviviparameters.Usedefaultviviparameters.PressReturntostarttheLINUXnow,anyotherkeyforvivitype"help"forhelp.vivi>paramsetlinux_cmd_line"root=/dev/nfsnfsroot=90:/home/example/nfsip=00:90:::EDUK4:eth0:offconsole=ttySAC1,115200mem=64Minit=/linuxrcnoinitrd"Changelinuxcommandlineto"root=/dev/nfsnfsroot=90:/home/example/nfsip=00:90:::EDUK4:eth1:offconsole=ttySAC1,115200mem=64Minit=/linuxrcnoinitrd"vivi>bootCopylinuxkernelfrom0x00030000to0x30008000,size=0x001d0000...size=14donezImagemagic=0x016f2818Copyramdiskfrom0x00200000to0x30800000,size=0x00200000...size=2097152doneSetuplinuxparametersat0x30000100linuxcommandlineis:"root=/dev/nfsnfsroot=90:/home/example/nfs"MACH_TYPE=193NOW,BootingLinuxUncompressingLinuxLinuxversion2.6.14(embest@embest-laptop)(gccversion3.4.5)#2WedNov2609:308CPU:ARM920Tid(wb)[41129200]revision0(ARMv4T)Machine:SMDK2410ATAG_INITRDisdeprecated;pleaseupdateyourbootloader.Memorypolicy:ECCdisabled,Datacachewriteback37CPUS3C2410A(id0x32410002)S3C2410:core200.000MHz,memory100.000MHz,peripheral50.000MHzS3C2410Clocks,(c)2004SimtecElectronicsCLOCK:Slowmode(1.500MHz),fast,MPLLon,UPLLonUSBControl,(c)2006pc104CPU0:DVIVTwrite-backcacheCPU0:Icache:16384bytes,associativity64,32bytelines,8setsCPU0:Dcache:16384bytes,associativity64,32bytelines,8setsBuilt1zonelistsKernelcommandline:root=/dev/nfsnfsroot=90:/home/example/nfsipdirq:clearingsubpendingstatus00000038irq:clearingsubpendingstatus00000010PIDhashtableentries:512(order:9,8192bytes)timertcon=00000000,tcnta2c1,tcfg00000200,00000000,usec00001eb8Console:colourdummydevice80x30Dentrycachehashtableentries:16384(order:4,65536bytes)Inode-cachehashtableentries:8192(order:3,32768bytes)Memory:64MB=64MBtotalMemory:60928KBavailable(2803Kcode,688Kdata,420Kinit)Mount-cachehashtableentries:512CPU:Testingwritebuffercoherency:oksoftlockupthread0startedup.NET:Registeredprotocolfamily16S3C2410:InitialisingarchitectureSCSIsubsysteminitializedusbcore:registerednewdriverusbfsusbcore:registerednewdriverhubBluetooth:Corever2.7NET:Registeredprotocolfamily31Bluetooth:HCIdeviceandconnectionmanagerinitializedBluetooth:HCIsocketlayerinitializedS3C2410DMADriver,(c)2003-2004SimtecElectronicsDMAchannel0atc4800000,irq33DMAchannel1atc4800040,irq34DMAchannel2atc4800080,irq35DMAchannel3atc48000c0,irq36NetWinderFloatingPointEmulatorV0.97(doubleprecision)devfs:2004-01-31RichardGooch(rgooch@atnf.csiro.au)devfs:boot_options:0x138JFFS2version2.2.(NAND)(C)2001-2003RedHat,Inc.yaffsNov25200816:42:48Installing.InitializingCryptographicAPIConsole:switchingtocolourframebufferdevice80x30fb0:s3c2410fbframebufferdeviceS3C2410RTC,(c)2004SimtecElectronicss3c2410-rtcs3c2410-rtc:rtcdisabled,re-enablings3c2410_serial0atMMIO0x50000000(irq=70)isaS3C2410s3c2410_serial1atMMIO0x50004000(irq=73)isaS3C2410s3c2410_serial2atMMIO0x50008000(irq=76)isaS3C2410ioschedulernoopregisteredioscheduleranticipatoryregisteredioschedulerdeadlineregisteredioschedulercfqregisteredRAMDISKdriverinitialized:16RAMdisksof4096Ksize1024blocksizeloop:loaded(max8devices)nbd:registereddeviceatmajor43usbcore:registerednewdriverubDM9000Aeth0foundDM9000Aeth1foundLinuxvideocaptureinterface:v1.00ovcamchip:v2.27forLinux2.6:OVcamerachipI2CdriverS3C24XXNANDDriver,(c)2004SimtecElectronicss3c2410-nand:mappedregistersatc4880000s3c2410-nand:timing:Tacls10ns,Twrph040ns,Twrph110nsNANDdevice:ManufacturerID:0xec,ChipID:0x76(SamsungNAND64MiB3,3V8-bi)ScanningdeviceforbadblocksCreating6MTDpartitionson"NAND64MiB3,3V8-bit":0x00000000-0x00030000:"bootloader"0x00030000-0x00200000:"kernel"0x00200000-0x00400000:"ramdisk"0x00400000-0x03c00000:"yaffs"0x03c00000-0x03d00000:"jffs2"0x03d00000-0x03ff0000:"data"usbmon:debugfsisnotavailables3c2410-ohcis3c2410-ohci:S3C24XXOHCIs3c2410-ohcis3c2410-ohci:newUSBbusregistered,assignedbusnumber1s3c2410-ohcis3c2410-ohci:irq42,iomem0x49000000hub1-0:1.0:USBhubfound39hub1-0:1.0:2portsdetectedInitializingUSBMassStoragedriver...usbcore:registerednewdriverusb-storageUSBMassStoragesupportregistered.usbcore:registerednewdriverhiddevusbcore:registerednewdriverusbhiddrivers/usb/input/hid-core.c:v2.6:USBHIDcoredriverusbcore:registerednewdriverdabusbdrivers/usb/media/dabusb.c:v1.54:DAB-USBInterfaceDriverforLinux(c)1999s3c2410_udc:version28Aug2005s3c2410_udc_probegotandenabledclocks3c2410_udc:gotirq41mice:PS/2mousedevicecommonforallmicets:Compaqtouchscreenprotocoloutputs3c2410TouchScreensuccessfullyloadedi2c/deventriesdrivers3c2410-i2cs3c2410-i2c:slaveaddress0x10s3c2410-i2cs3c2410-i2c:busfrequencysetto390KHzs3c2410-i2cs3c2410-i2c:i2c-0:S3CI2CadapterBluetooth:HCIUSBdriverver2.9usbcore:registerednewdriverhci_usbs3c2410-sdidriverinitialisationdone.UDA1341audiodriverinitializedNET:Registeredprotocolfamily26NET:Registeredprotocolfamily2IProutecachehashtableentries:1024(order:0,4096bytes)TCPestablishedhashtableentries:4096(order:2,16384bytes)TCPbindhashtableentries:4096(order:2,16384bytes)TCP:Hashtablesconfigured(established4096bind4096)TCPrenoregisteredTCPbicregisteredNET:Registeredprotocolfamily1Bluetooth:L2CAPver2.7Bluetooth:L2CAPsocketlayerinitializedBluetooth:RFCOMMver1.5Bluetooth:RFCOMMsocketlayerinitializedBluetooth:RFCOMMTTYlayerinitializedBluetooth:BNEP(EthernetEmulation)ver1.2Bluetooth:BNEPfilters:protocolmulticast802.1QVLANSupportv1.8BenGreear<greearb@>AllbugsaddedbyDavidS.Miller<davem@>IP-Config:Complete:device=eth1,addr=00,mask=,gw=,host=EDUK4,domain=,nis-domain=(none),bootserver=90,rootserver=90,rootpath=LookingupportofRPC100003/2on90LookingupportofRPC100005/1on90VFS:Mountedroot(nfsfilesystem).Mounteddevfson/devFreeinginitmemory:420Kinitstarted:BusyBoxv1.1.2(2008.11.25-08:48+0000)multi-callbinaryStartingpid763,console/dev/console:'/etc/init.d/rcS'running/etc/init.d/rcSmounttmpfsfilesystemto/tmpmountramfsfilesystemto/var//此处正确加载nfs根文件系统PleasepressEntertoactivatethisconsole.Startingpid782,console/dev/console:'/bin/sh'/$四、实验中遇到的问题及解决方法在本次实验中，一直都出现超时错误，经过老师的帮助也没能解决，我们自己又插好网线、换网线做了好几次，仍然不可以。第二部分嵌入式Linux驱动开发实验环境构建说明：在做实验之前，先统一一下实验环境，本部分linux下的实验均脱离GUI图形界面，均为linux命令行下操作，因此提供了专用于实验用的精简文件系统。在实验中提供的rootfs-eduk4-base.tgz根文件系统映像即为实验用文件系统，可参照《基于S3C2410嵌入式Linux开发实验与实践》4.6.2章节中（P227）更新yaffs文件系统映像为rootfs-eduk4-base.tgz。可以在ubuntu下操作，串口终端使用minicom。并修改vivi的启动参数为yaffs根文件系统引导：vivi>paramresetvivi>paramsave文件系统更新完毕，并修改好vivi启动参数后，启动实验系统，minicom的终端串口信息如下：VIVIversion0.1.4(embest@embest-laptop)(gccversion2.95.320010315(release))#0.1.42008xxxxxxxxxxxxxxxxxxxxxx16:38:19CSTMMUtablebaseaddress=0x33DFC000Succeedmemorymapping.NANDdevice:ManufactureID:0xec,ChipID:0x76(SamsungK9D1208V0M)Foundsavedviviparameters.PressReturntostarttheLINUXnow,anyotherkeyforviviCopylinuxkernelfrom0x00030000to0x30008000,size=0x001d0000...size=1900544donezImagemagic=0x016f2818Copyramdiskfrom0x00200000to0x30800000,size=0x00200000...size=2097152doneSetuplinuxparametersat0x30000100linuxcommandlineis:"noinitrdroot=/dev/mtdblock/3rootfstype=yaffsconsole=ttySAC1"MACH_TYPE=193NOW,BootingLinuxUncompressingLinuxdone,bootingthekernel.Linuxversion2.6.14(embest@embest-laptop)(gccversion3.4.5)#2WedNov2609:30:51CST2008CPU:ARM920Tid(wb)[41129200]revision0(ARMv4T)Machine:SMDK2410ATAG_INITRDisdeprecated;pleaseupdateyourbootloader.Memorypolicy:ECCdisabled,DatacachewritebackCPUS3C2410A(id0x32410002)S3C2410:core200.000MHz,memory100.000MHz,peripheral50.000MHzS3C2410Clocks,(c)2004SimtecElectronicsCLOCK:Slowmode(1.500MHz),fast,MPLLon,UPLLonUSBControl,(c)2006pc104CPU0:DVIVTwrite-backcacheCPU0:Icache:16384bytes,associativity64,32bytelines,8setsCPU0:Dcache:16384bytes,associativity64,32bytelines,8setsBuilt1zonelistsKernelcommandline:noinitrdroot=/dev/mtdblock/3rootfstype=yaffsconsole=ttySAC1irq:clearingsubpendingstatus00000010PIDhashtableentries:512(order:9,8192bytes)timertcon=00000000,tcnta2c1,tcfg00000200,00000000,usec00001eb8Console:colourdummydevice80x30Dentrycachehashtableentries:16384(order:4,65536bytes)Inode-cachehashtableentries:8192(order:3,32768bytes)Memory:64MB=64MBtotalMemory:60928KBavailable(2803Kcode,688Kdata,420Kinit)Mount-cachehashtableentries:512CPU:Testingwritebuffercoherency:oksoftlockupthread0startedup.NET:Registeredprotocolfamily16S3C2410:InitialisingarchitectureSCSIsubsysteminitializedusbcore:registerednewdriverusbfsusbcore:registerednewdriverhubBluetooth:Corever2.7NET:Registeredprotocolfamily31Bluetooth:HCIdeviceandconnectionmanagerinitializedBluetooth:HCIsocketlayerinitializedS3C2410DMADriver,(c)2003-2004SimtecElectronicsDMAchannel0atc4800000,irq33DMAchannel1atc4800040,irq34DMAchannel2atc4800080,irq35DMAchannel3atc48000c0,irq36NetWinderFloatingPointEmulatorV0.97(doubleprecision)devfs:2004-01-31RichardGooch(rgooch@atnf.csiro.au)devfs:boot_options:0x1JFFS2version2.2.(NAND)(C)2001-2003RedHat,Inc.3yaffsNov25200816:42:48Installing.InitializingCryptographicAPIConsole:switchingtocolourframebufferdevice80x30fb0:s3c2410fbframebufferdeviceS3C2410RTC,(c)2004SimtecElectronicss3c2410-rtcs3c2410-rtc:rtcdisabled,re-enablings3c2410_serial0atMMIO0x50000000(irq=70)isaS3C2410s3c2410_serial1atMMIO0x50004000(irq=73)isaS3C2410s3c2410_serial2atMMIO0x50008000(irq=76)isaS3C2410ioschedulernoopregisteredioscheduleranticipatoryregisteredioschedulerdeadlineregisteredioschedulercfqregisteredRAMDISKdriverinitialized:16RAMdisksof4096Ksize1024blocksizeloop:loaded(max8devices)nbd:registereddeviceatmajor43usbcore:registerednewdriverubDM9000Aeth0foundDM9000Aeth1foundLinuxvideocaptureinterface:v1.00ovcamchip:v2.27forLinux2.6:OVcamerachipI2CdriverS3C24XXNANDDriver,(c)2004SimtecElectronicss3c2410-nand:mappedregistersatc4880000s3c2410-nand:timing:Tacls10ns,Twrph040ns,Twrph110nsNANDdevice:ManufacturerID:0xec,ChipID:0x76(SamsungNAND64MiB3,3V8-bit)ScanningdeviceforbadblocksCreating6MTDpartitionson"NAND64MiB3,3V8-bit":0x00000000-0x00030000:"bootloader"0x00030000-0x00200000:"kernel"0x00200000-0x00400000:"ramdisk"0x00400000-0x03c00000:"yaffs"0x03c00000-0x03d00000:"jffs2"0x03d00000-0x03ff0000:"data"usbmon:debugfsisnotavailables3c2410-ohcis3c2410-ohci:S3C24XXOHCIs3c2410-ohcis3c2410-ohci:newUSBbusregistered,assignedbusnumber1s3c2410-ohcis3c2410-ohci:irq42,iomem0x49000000hub1-0:1.0:USBhubfoundhub1-0:1.0:2portsdetectedInitializingUSBMassStoragedriver...usbcore:registerednewdriverusb-storageUSBMassStoragesupportregistered.usbcore:registerednewdriverhiddev4usbcore:registerednewdriverusbhiddrivers/usb/input/hid-core.c:v2.6:USBHIDcoredriverusbcore:registerednewdriverdabusbdrivers/usb/media/dabusb.c:v1.54:DAB-USBInterfaceDriverforLinux(c)1999s3c2410_udc:version28Aug2005s3c2410_udc_probegotandenabledclocks3c2410_udc:gotirq41mice:PS/2mousedevicecommonforallmicets:Compaqtouchscreenprotocoloutputs3c2410TouchScreensuccessfullyloadedi2c/deventriesdrivers3c2410-i2cs3c2410-i2c:slaveaddress0x10s3c2410-i2cs3c2410-i2c:busfrequencysetto390KHzs3c2410-i2cs3c2410-i2c:i2c-0:S3CI2CadapterBluetooth:HCIUSBdriverver2.9usbcore:registerednewdriverhci_usbs3c2410-sdidriverinitialisationdone.UDA1341audiodriverinitializedNET:Registeredprotocolfamily26NET:Registeredprotocolfamily2IProutecachehashtableentries:1024(order:0,4096bytes)TCPestablishedhashtableentries:4096(order:2,16384bytes)TCPbindhashtableentries:4096(order:2,16384bytes)TCP:Hashtablesconfigured(established4096bind4096)TCPrenoregisteredTCPbicregisteredNET:Registeredprotocolfamily1Bluetooth:L2CAPver2.7Bluetooth:L2CAPsocketlayerinitializedBluetooth:RFCOMMver1.5Bluetooth:RFCOMMsocketlayerinitializedBluetooth:RFCOMMTTYlayerinitializedBluetooth:BNEP(EthernetEmulation)ver1.2Bluetooth:BNEPfilters:protocolmulticast802.1QVLANSupportv1.8BenGreear<greearb@>AllbugsaddedbyDav