本着解决问题的心态，我将自己的问题详细写出来，还请大家多多指正！
在进入redhat9虚拟机建立的系统后，虚拟机和目标机可以互相Ping通，虚拟机可以回环挂载，可是用QQ2440目标板挂载NFS时候却不行了？

首先引用一下版主的一个帖子回复！
网友问题：
我没用装rethat ，怎么在window xp 下弄linux的开发环境？
qq2440回复：
“可以使用vmware虚拟机，但可能不能正常编译qtopia,也不能使用NFS(网络文件系统)，其他的开发基本没有问题。”

但是问题是我想虚拟机下面网桥模式难道不行？把网卡做成混杂模式，然后经过实际操作确实在我这边无法成功挂载nfs系统，但是网上也有人用虚拟机吗，有没有网友用虚拟机成功挂载nfs系统呢？

按照版主kasim的回复好像是可行的，帖子在http://www.aiothome.com/bbs/read.php?tid=608，但是我按照那个试过了啊，怎么还是有问题呢？
 
我的系统是vmware workstation 5.5.3 build-34685 上安装的redhat9,按照友善的光盘上的设置，我的NFS服务端测试均正常，但是在设置完客户端，出现了几个问题，想了几天，终究是解决不了了。
 
另外，如果sunnydream已经解决了此问题，还请把您的建议告诉我好吗？

我做这个错误报告做了3次，基本上可以确定，portmap好像指定的端口不对，按照debian的protmap配置需要删除 /etc/default/protmap 中的 “-i 127.0.0.1”,但是redhat9中仅仅有/etc/default/adduser,没有找到该文件。这个portmap难道不要设置吗？

配置nfs服务我的顺序是这样：关闭防火墙及iptables等服务------protmap –--/etc/hosts.deny-----/etc/hosts.allow----/etc/exports----重启相关服务项
/etc/hosts.deny设置如下：
portmap:ALL
lcokd:ALL
mountd:ALL
rquotad:ALL
statd:ALL
/etc/hosts.allow设置如下：
portmap:192.168.1.230
lcokd: 192.168.1.230
mountd: 192.168.1.230
rquotad: 192.168.1.230
statd: 192.168.1.230
/etc/exports设置如下：
/opt/FriendlyARM/QQ2440/root_nfs 192.168.1.230(rw,sync,no_root_squash)
完了进入 /etc/init.d/目录下 重启 portmap,nfs 以及用 #exportfs –rv 重新载入 /etc/exprots

进入vivi下，设置如下：

param set linux_cmd_line "console=ttySAC0 root=/dev/nfs nfsroot=192.168.1.100:/opt/FriendlyARM/QQ2440/root_nfs ip=192.168.1.230:192.168.1.100:192.168.1.100:255.255.255.0:QQ2440V3.arm9.net:eth0:off"

说明:
192.168.1.230是临时发配给板子的IP
192.168.1.100是PC机的IP,请根据实际修改成你PC机的IP

第一次挂载nfs失败，错误信息用红色标识

Supervivi> param set linux_cmd_line "console=ttySAC0 root=/dev/nfs nfsroot=192.1
68.1.100:/opt/FriendlyARM/QQ2440/root_nfs ip=192.168.1.230:192.168.1.100:192.168
.1.100:255.255.255.0:QQ2440V3.arm9.net:eth0:off"
Change linux command line to "console=ttySAC0 root=/dev/nfs nfsroot=192.168.1.10
0:/opt/FriendlyARM/QQ2440/root_nfs ip=192.168.1.230:192.168.1.100:192.168.1.100:
255.255.255.0:QQ2440V3.arm9.net:eth0:off"
Supervivi> boot
Copy linux kernel from 0x00050000 to 0x30008000, size = 0x00200000 ... done
zImage magic = 0x016f2818
Setup linux parameters at 0x30000100
linux command line is: "console=ttySAC0 root=/dev/nfs nfsroot=192.168.1.100:/opt
/FriendlyARM/QQ2440/root_nfs ip=192.168.1.230:192.168.1.100:192.168.1.100:255.25
5.255.0:QQ2440V3.arm9.net:eth0:off"
MACH_TYPE = 782
NOW, Booting Linux......
Uncompressing Linux.............................................................
............................................ done, booting the kernel.
Linux version 2.6.13 (root@localhost.localdomain) (gcc version 3.4.1) #1 Tue Sep
18 06:09:37 CST 2007
CPU: ARM920Tid(wb) [41129200] revision 0 (ARMv4T)
Machine: SBC2440
ATAG_INITRD is deprecated; please update your bootloader.
Memory policy: ECC disabled, Data cache writeback
CPU S3C2440A (id 0x32440001)
BUG: mapping for 0x19000000 at 0xd0000000 overlaps vmalloc space
S3C2440: core 405.000 MHz, memory 101.250 MHz, peripheral 50.625 MHz
S3C2410 Clocks, (c) 2004 Simtec Electronics
CPU0: D VIVT write-back cache
CPU0: I cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
CPU0: D cache: 16384 bytes, associativity 64, 32 byte lines, 8 sets
Built 1 zonelists
Kernel command line: console=ttySAC0 root=/dev/nfs nfsroot=192.168.1.100:/opt/Fr
iendlyARM/QQ2440/root_nfs ip=192.168.1.230:192.168.1.100:192.168.1.100:255.255.2
55.0:QQ2440V3.arm9.net:eth0:off
irq: clearing pending ext status 00000200
irq: clearing subpending status 00000007
irq: clearing subpending status 00000002
PID hash table entries: 512 (order: 9, 8192 bytes)
timer tcon=00000000, tcnt a4ca, tcfg 00000200,00000000, usec 00001e57
Console: colour dummy device 80x30
Dentry cache hash table entries: 16384 (order: 4, 65536 bytes)
Inode-cache hash table entries: 8192 (order: 3, 32768 bytes)
Memory: 64MB = 64MB total
Memory: 61184KB available (2535K code, 1005K data, 144K init)
Mount-cache hash table entries: 512
CPU: Testing write buffer coherency: ok
NET: Registered protocol family 16
USB Power Control, (c) 2004 Simtec Electronics
S3C2440: Initialising architecture
S3C2440: IRQ Support
S3C2440: Clock Support, UPLL 96.000 MHz
SCSI subsystem initialized
usbcore: registered new driver hub
S3C2410 DMA Driver, (c) 2003-2004 Simtec Electronics
DMA channel 0 at c4800000, irq 33
DMA channel 1 at c4800040, irq 34
DMA channel 2 at c4800080, irq 35
DMA channel 3 at c48000c0, irq 36
NetWinder Floating Point Emulator V0.97 (double precision)
devfs: 2004-01-31 Richard Gooch (rgooch@atnf.csiro.au)
devfs: boot_options: 0x1
yaffs Sep 18 2007 06:07:37 Installing.
Initializing Cryptographic API
Console: switching to colour frame buffer device 30x20
S3C24X0 fb0: s3c2410fb frame buffer device initialize done
GPIO L3 bus interface for S3C2440, installed
S3C2410 RTC, (c) 2004 Simtec Electronics
s3c2410-rtc s3c2410-rtc: rtc disabled, re-enabling
leds initialized
s3c2410_serial0 at MMIO 0x50000000 (irq = 70) is a S3C2440
s3c2410_serial1 at MMIO 0x50004000 (irq = 73) is a S3C2440
s3c2410_serial2 at MMIO 0x50008000 (irq = 76) is a S3C2440
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
RAMDISK driver initialized: 16 RAM disks of 4096K size 1024 blocksize
loop: loaded (max 8 devices)
nbd: registered device at major 43
Cirrus Logic CS8900A driver for Linux (Modified for SMDK2410)
eth0: CS8900A rev E at 0xd0000300 irq=53, no eeprom , addr: 08: 0:3E:26:0A:5B
Linux video capture interface: v1.00
ovcamchip: v2.27 for Linux 2.6 : OV camera chip I2C driver
Uniform Multi-Platform E-IDE driver Revision: 7.00alpha2
ide: Assuming 50MHz system bus speed for PIO modes; override with idebus=xx
ide_s3c2440_init
ide0: S3C2410 IDE interface
S3C24XX NAND Driver, (c) 2004 Simtec Electronics
s3c2440-nand: mapped registers at c4880000
s3c2440-nand: timing: Tacls 9ns, Twrph0 39ns, Twrph1 9ns
NAND device: Manufacturer ID: 0xec, Chip ID: 0x76 (Samsung NAND 64MiB 3,3V 8-bit
)
NAND_ECC_NONE selected by board driver. This is not recommended !!
Scanning device for bad blocks
Creating 3 MTD partitions on "NAND 64MiB 3,3V 8-bit":
0x00000000-0x00030000 : "bootloader"
mtd: Giving out device 0 to bootloader
0x00050000-0x00250000 : "kernel"
mtd: Giving out device 1 to kernel
0x00250000-0x03ffc000 : "root"
mtd: Giving out device 2 to root
s3c2410-ohci s3c2410-ohci: S3C24XX OHCI
s3c2410-ohci s3c2410-ohci: new USB bus registered, assigned bus number 1
s3c2410-ohci s3c2410-ohci: irq 42, io mem 0x49000000
hub 1-0:1.0: USB hub found
hub 1-0:1.0: 2 ports detected
Initializing USB Mass Storage driver...
usbcore: registered new driver usb-storage
USB Mass Storage support registered.
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.01:USB HID core driver
usbcore: registered new driver ov511
drivers/usb/media/ov511.c: v1.64 for Linux 2.5 : ov511 USB Camera Driver
usbcore: registered new driver gspca
drivers/usb/media/gspca/gspca_core.c: gspca driver 00.60.00 registered
mice: PS/2 mouse device common for all mice
ts: Compaq touchscreen protocol output
s3c2410 TouchScreen successfully loaded
i2c /dev entries driver
s3c2440-i2c s3c2440-i2c: slave address 0x10
s3c2440-i2c s3c2440-i2c: bus frequency set to 98 KHz
s3c2440-i2c s3c2440-i2c: i2c-0: S3C I2C adapter
mmci-s3c2410: probe: mapped sdi_base=c4d00000 irq=37 irq_cd=60 dma=0.
mmci-s3c2410: initialisation done.
SBC2440 SOUND driver register
SBC2440 SOUND driver probe!
SBC2440 UDA1341 audio driver initialized
NET: Registered protocol family 2
IP route cache hash table entries: 1024 (order: 0, 4096 bytes)
TCP established hash table entries: 4096 (order: 3, 32768 bytes)
TCP bind hash table entries: 4096 (order: 2, 16384 bytes)
TCP: Hash tables configured (established 4096 bind 4096)
TCP reno registered
TCP bic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond: at least one card is busy - trying again.
MMC: sd_app_op_cond locked busy. Probably have broken SD-Card.
IP-Config: Complete:
device=eth0, addr=192.168.1.230, mask=255.255.255.0, gw=192.168.1.100,
host=QQ2440V3, domain=, nis-domain=arm9.net,
bootserver=192.168.1.100, rootserver=192.168.1.100, rootpath=
Looking up port of RPC 100003/2 on 192.168.1.100
Looking up port of RPC 100005/1 on 192.168.1.100
VFS: Mounted root (nfs filesystem).
mount_devfs_fs(): unable to mount devfs, err: -2
Freeing init memory: 144K
Warning: unable to open an initial console.
Kernel panic - not syncing: No init found. Try passing init= option to kernel.

VIVI version 0.1.4 (root@vmwarelinux) (gcc version 2.95.3 20010315 (release)) #0
.1.4 Mon Apr 28 09:55:54 CST 2008
MMU table base address = 0x33DFC000
Succeed memory mapping.
DIVN_UPLL0
MPLLVal [M:7fh,P:2h,S:1h]
CLKDIVN:dh

第二次挂载失败
。。。。。。。。。。。。。。。。。。。。。。。。。。。。
Looking up port of RPC 100003/2 on 192.168.1.100
portmap: server 192.168.1.100 not responding, timed out
Root-NFS: Unable to get nfsd port number from server, using default
Looking up port of RPC 100005/1 on 192.168.1.100
portmap: server 192.168.1.100 not responding, timed out
Root-NFS: Unable to get mountd port number from server, using default
Root-NFS: Server returned error -5 while mounting /opt/FriendlyARM/QQ2440/root_n
fs
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: Cannot open root device "nfs" or unknown-block(2,0)
Please append a correct "root=" boot option
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(2,0)
?
VIVI version 0.1.4 (root@vmwarelinux) (gcc version 2.95.3 20010315 (release))
#0.1.4 Mon Apr 28 09:55:54 CST 2008
MMU table base address = 0x33DFC000
Succeed memory mapping.
DIVN_UPLL0
MPLLVal [M:7fh,P:2h,S:1h]
CLKDIVN:dh


三次在tty1下挂载nfs
之前一直在图形界面下挂载，我因为重新启动了系统，所以这次在tty1下设置nfs服务，但是仍然是错误信息。  

 

。。。。。。。。。。。。。。。。。。。。
Looking up port of RPC 100003/2 on 192.168.1.100
Looking up port of RPC 100005/1 on 192.168.1.100
VFS: Mounted root (nfs filesystem).
mount_devfs_fs(): unable to mount devfs, err: -2
Freeing init memory: 144K
Warning: unable to open an initial console.
Kernel panic - not syncing: No init found. Try passing init= option to kernel. 


 

  

VFS: Mounted root (nfs filesystem).
mount_devfs_fs(): unable to mount devfs, err: -2

你不是已经挂载成功了吗？ devfs的错误是因为nfs目录下没有dev目录， devfs不知道往哪里挂载。你在redhat 9上用mkdir -p /opt/FriendlyARM/QQ2440/root_nfs/dev就可以了
不要再冤枉无辜的vmware了...

哦 谢谢你了！
我这边还有个文档，友善之臂新出来的nfs文档的介绍。刚问的他们的人员。下载地址在：http://www.arm9.com.cn/downloads.htm  mizi2440有不少改进！

Please append a correct "root=" boot option
我的一直出现这个错误，该怎么办呢？试过很多次了，其他的配置都没问题的

老实说我不知道，因为我不知道你的内核上哪儿找的NFS，也不知道你的NFS Server应该在什么地方

我发了帖子，里面有完整的信息，麻烦帮忙再看一下
http://www.aiothome.com/bbs/read.php?tid=3370