请教一下，开发板挂载nfs时遇到不能挂载的问题

tamujin

想在开发板启动的时候加载nfs。

在linux主机编辑的/etc/exports 文件，添加了如下内容：

/home/<useracct>/workdir/filesys *(rw,no_root_squash,no_all_squash,sync)



linux主机我开启了portmap和nfs服务，也关闭了防火墙。在主机挂载设置的nfs目录：mount –t nfs  211.71.69.97：/home/useracct/workdir/filesys /mnt，然后在/mnt下可以看到挂载目录的内容。



启动开发板后在u-boot设置自动加载nfs文件系统，

U-Boot>setenv bootargs bootargs=men=64M console=ttyS0,115200 root=/dev/nfs rw nfsroot=211.71.69.97:/home/useracct/workdir/filesys ip=211.71.69.184:211.71.69.2:255.255.255.0

重启板子，然后依次加载u-boot、内核成功，然后无法加载上nfs文件系统：

把启动的最后几行贴上来：

ALSA device list:
  #0: DaVinci DM6467 EVM (tlv320aic3x)
TCP cubic registered
NET: Registered protocol family 17
Clocks: disable unused uart1
Clocks: disable unused emac
Clocks: disable unused timer1
emac-mii: probed
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
..... timed out!
IP-Config: Retrying forever (NFS root)...
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
....

请教大侠怎么解决这个问题呢？

我在linux主机 #tail  -f  /var/log/messages

显示如下内容：
[root@localhost yx]# tail -f /var/log/messages
Aug 19 19:49:38 localhost kernel: e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
Aug 19 19:49:38 localhost kernel: e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
Aug 19 19:49:38 localhost NetworkManager[1247]: <info> (eth0): carrier now ON (device state 8 )
Aug 19 19:49:38 localhost lldpad[1198]: vdp_ifup:eth0 vdp data already exists !
Aug 19 21:55:56 localhost rpcbind: rpcbind terminating on signal. Restart with "rpcbind -w"
Aug 19 21:56:03 localhost rpc.mountd[3646]: Caught signal 15, un-registering and exiting.
Aug 19 21:56:03 localhost kernel: nfsd: last server has exited, flushing export cache
Aug 19 21:56:04 localhost kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Aug 19 21:56:04 localhost kernel: NFSD: starting 90-second grace period
Aug 19 21:56:04 localhost rpc.mountd[5211]: Version 1.2.3 starting

tamujin

回复 12# daniel_kohler


    问题解决了，redhat 6中portmap换成了rpcbind，这样装好它nfs服务器就没问题了。多谢了

tamujin

回复 11# yydsr0278


    谢谢啦，我发现问题是，我把开发板和linux主机用Hub连接的，出现内核启动后没法通过DHCP获得IP。
然后我又用网线把Hub和实验室墙上的网口连起来，这样板子上内核启动后就就可以通过DHCP获得IP启动nfs了

daniel_kohler

回复 4# tamujin


    如果没有安装的话，当然需要安装了，然后配置nfs服务器的根目录，client连接的用户名和密码，你可以用命令service nfs start看一下你的上位机上有没有这个服务。一般redhat是带有nfs服务器的，只要运行我刚说的命令就好了。

yydsr0278

回复  yydsr0278


    今天我看了一下linux主机系统版本，是redhat 6.1，之前我装了个portmap-4.0是用 ...
tamujin 发表于 2011-08-19 09:14

恭喜你，你的nfs的sever配置的是好的。
但是从你前面的kernel启动的信息看，

你还需要安装并配置一个DHCP的服务器为你的目标板得网卡分配IP地址。
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
..... timed out!
IP-Config: Retrying forever (NFS root)...
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full

配置的IP地址后，还要确认你的kernel是否支持NFS-client，（通过这一步，不过我觉得应该是支持的）

tamujin

回复 3# yydsr0278


    我把/var/log/messages 的内容贴一下，上次可能是目录写错了/usr，才提示找不到文件。但是我没看懂信息的内容啊

[root@localhost yx]# tail -f /var/log/messages
Aug 19 19:49:38 localhost kernel: e1000e: eth0 NIC Link is Up 100 Mbps Full Duplex, Flow Control: RX/TX
Aug 19 19:49:38 localhost kernel: e1000e 0000:00:19.0: eth0: 10/100 speed: disabling TSO
Aug 19 19:49:38 localhost NetworkManager[1247]: <info> (eth0): carrier now ON (device state 8 )
Aug 19 19:49:38 localhost lldpad[1198]: vdp_ifup:eth0 vdp data already exists !
Aug 19 21:55:56 localhost rpcbind: rpcbind terminating on signal. Restart with "rpcbind -w"
Aug 19 21:56:03 localhost rpc.mountd[3646]: Caught signal 15, un-registering and exiting.
Aug 19 21:56:03 localhost kernel: nfsd: last server has exited, flushing export cache
Aug 19 21:56:04 localhost kernel: NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state recovery directory
Aug 19 21:56:04 localhost kernel: NFSD: starting 90-second grace period
Aug 19 21:56:04 localhost rpc.mountd[5211]: Version 1.2.3 starting

tamujin

回复 7# yydsr0278

我把ext2的文件系统烧写到flash，让文件系统从flash加载之后，然后再
mount -t nfs 211.71.69.97:/home/useracct/workdir/filesys /mnt
这样可以看到nfs中的内容，这是不是说，在nfs客户端可以加载nfs了呢？

用开发板启动的时候加载nfs还是有问题：

ALSA device list:
  #0: DaVinci DM6467 EVM (tlv320aic3x)
TCP cubic registered
NET: Registered protocol family 17
Clocks: disable unused uart1
Clocks: disable unused emac
Clocks: disable unused timer1
emac-mii: probed
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
..... timed out!
IP-Config: Retrying forever (NFS root)...
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
....


在U-boot中我设置：

setenv bootcmd nboot 0x80700000 0 0x160000\; bootm
setenv bootargs men=112M console=ttyS0,115200 root=/dev/nfs rw nfsroot=211.71.69.97:/home/useracct/workdir/filesys ip=211.71.69.55:211.71.69.2:255.255.255.0
上面设置从nfs启动正确吗？

tamujin

回复 6# yydsr0278


    今天我看了一下linux主机系统版本，是redhat 6.1，之前我装了个portmap-4.0是用在redhat 5的，然后我就把portmap-4.0卸载了，然后系统里装有nfs-utils和rpmband，好像redhat 6.1中rpmband就起到了portap的作用。
   不过现在的问题是，用开发板启动的时候加载nfs还是有问题：

ALSA device list:
  #0: DaVinci DM6467 EVM (tlv320aic3x)
TCP cubic registered
NET: Registered protocol family 17
Clocks: disable unused uart1
Clocks: disable unused emac
Clocks: disable unused timer1
emac-mii: probed
drivers/rtc/hctosys.c: unable to open rtc device (rtc0)
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
..... timed out!
IP-Config: Retrying forever (NFS root)...
eth0: attached PHY driver [ET1011C] (mii_bus:phy_addr=1:01, id=282f013)
Sending DHCP requests .
PHY: 1:01 - Link is Up - 100/Full
....

总是这样子。

但是我把ext2的文件系统烧写到flash，让文件系统从flash加载之后，然后再
mount -t nfs 211.71.69.97:/home/useracct/workdir/filesys /mnt
这样却可以看到nfs中的内容，请问这是怎么回事呢？

yydsr0278

回复 5# tamujin


    那你要看看是不是其他的文件了，现在新的redhat更新的很快，你去看看（/var/log下找找看，应该不会去到其他的目录）

yydsr0278

回复 4# tamujin


    详细的名称我记不起来了，你去redhat的安装盘上找找看，比如包括*nfs*的关键字等等