how to configure freeBSD kernel to mount NFS as a root file system

[crest]

On 28.07.2011, at 03:54, satish kondapalli wrote:

> Hi,
> 
> How to configure freeBSD kernel to mount NFS as a root filesystem. 
> In case of Linux we will set the bootargs ( In kernel command line args, we
> will give the server ip and path of file system.)
> 
> 1) In Free BSD, make installworld  will install all the utils in DESTDIR,
> that DESTDIR we can use as the file system. am i correct?

Yes export $DESTDIR via NFSv3

> 2) If my first point is correct then how to configure my kernel  DESTDIR as
> a root filesytem. where to give the path of DESTDIR and DESTDIR machine IP
> in the kernel.

Your kernel needs to support (options NFS_ROOT). If you can't run /boot/loader than define the rootfs in the kernel config (options ROOTDEVNAME=\"ufs:/dev/ufs/rootfs\").