2.2. NFS Support

barebox has readonly support for NFSv3 in UDP mode.

Example:

barebox:/ mount -t nfs 192.168.23.4:/home/user/nfsroot /mnt/nfs

The barebox NFS driver adds two linux.bootargs device parameters to the NFS device. These parameters will be combined into a Linux kernel commandline snippet containing a suitable root= option for booting from exactly that NFS share.

Example:

barebox:/ devinfo nfs0
...
linux.bootargs.root: /dev/nfs
linux.bootargs.rootopts: nfsroot=192.168.23.4:/home/sha/nfsroot/generic-v7,v3,tcp

The options default to v3,tcp but can be adjusted before mounting the NFS share with the global.linux.rootnfsopts variable