Hi i am trying to mount NFS file system on the target board from the Linux(fedora)Host server.


i have my RFS folder in /home/aravindb/RFS/rootfs of Host server.

i changed the /etc/exports file to

/home/aravindb/RFS/rootfs *(rw,sync,no_root_squash)

then i have given bootargs for kernel as

setenv bootargs console=ttyS0,115200,n8 noinitrd ip=10.115.6.243:10.115.6.1:255.255.255.0 root=/dev/nfs rw nfsroot=10.115.6.242:/home/aravindb/RFS/rootfs nolock mem=128M

where 10.115.6.243 is target board ip address
and 10.115.6.242 is server ip address.

when i tried to boot the system with this parameters i am getting error like
Root-NFS: Server returned error -13 while mounting /home/aravindb/RFS/rootfs
VFS: Unable to mount root fs via NFS, trying floppy.
VFS: No root yet, retrying to mount root on nfs (unknown-block(2,0))
VFS: No root yet, retrying to mount root on nfs (unknown-block(2,0))

please tell me what went wrong???

Hi,

I have faced d same problem & after some trials able to solve,hope so help u also.
I have done d same way i.e. some changes in /etc/exportfs file & then started my target board,but linux kernel was unable to mount the NFS,so i follow the foll. steps at bash shell:-

exportfs -a
exportfs
service nfs restart
service network restart

& then restarted my target board.

Hope this may also solve ur problem or may be u have already got the solution,but i wanted to help others new bies in linux,which are going to face this problem definitely.
Reply if dis info help u at rodrex.lee@gmail.com.

Regards,
Rodrex Lee

In my case, there was a domain problem, that is, there was some change with the domain that was assingning gateway,netmask and other network addresses. kindly do look at the /etc/hosts file and make sure whatever domain that was mentioned there is applicable. If not, add the current domain in that file and try again. It worked for me... Im pasting the contents of the file just for reference(with the actual contents removed )

#/etc/hosts

# Do not remove the following line, or various programs
# that require network functionality will fail.
xx.xx.xx.xx SomeServer localhost
xx.xx.xx.xx currentdomainname localhost

P.S: after changing these contents, do perform the restarts as mentioned in the previous reply. Manytimes, just restarting the services does the magic ....

Hi,
I have also a embedded board where NFS server is running on the PC and when iam trying to boot the board from flash its working, but when i am trying to boot the same board via NFS its prompting the following error:
VFS : Mounted Root (nfs file system)
Freeing init memory : 104k
Warning : Unable to open an initial console
Kernel panic - not syncing : No init found. Try passing init = option to kernel.

I have bootargs set as follows
bootargs= console=ttyS0 root=/dev/nfs rw nfsroot=192.168.1.30:/tftpboot/rootfs ip=192.168.1.230:192.168.1.30:192.168.1.30:255.255.255.0rboard:eth0ff
where HostIP = 192.168.1.30
target board ip = 192.168.1.230

or should i have to change my bootcmd along with bootargs so as to boot the board via NFS? if yes, then what is the command for bootcmd?
Please let me know the solution???
Any help is appreciated

hi
i also had the same problem. then i edit /etc/export file and now the problem is solved...... but pls tel me what is the use of that file and what is that "sync" option in the file