If I boot kernel and rootfs over tftp or nfs with uboot, what happens to settings I made in the rootfs at runtime after powering off the board? if I use an image in the nand, changes are written in the jffs2 system. What happens to them, if bootes from network?
Don't know about tftp but the idea of NFS is that all changes take place immediately on the host. So, I would expect the host NFS to retain those changes and take effect the next time you boot the board using NFS. Don't think I quite understand your last comment . . . booting from NAND and NFS are separate processes. I wouldn't expect running NFS to effect what I had stored in NAND.
I am trying to boot the uImage from nfs server. I set it up the nfs server
in the host machine by adding below lines in /etc/exports
/home/mohanraj/Mohanraj/Dev_testing/target
10.0.0.100(rw,sync,no_root_squash,no_all_squash,no_subtree_check)
Then i tried using nfs command to load uImage but getting the below error
File transfer via NFS from server 10.0.0.100; our IP address is 10.0.0.111
Filename '/home/mohanraj/Mohanraj/Dev_testing/target/uImage'.
Load address: 0x31000000
Loading: *
ARP Retry count exceeded; starting again
Could u please help me?