RE: Network booting with a disk image ?

[Feng Shuo]

You can make NBD connection in 'initrd' and mount the 'nd' block device,
then, just pivot_root: 

(An example linuxrc in initrd)
        insmod /lib/jbd.o
        insmod /lib/ext3.o
        insmod /lib/mii.o
        insmod /lib/8139too.o 2>/dev/null
        insmod /lib/nbd.o
        mount -t proc /proc /proc
        ifconfig eth0 XX.XX.XX.XX up
        nbd-client YY.YY.YY.YY ZZZ /dev/nd0
        echo 0x0100 > /proc/sys/kernel/real-root-dev
        mount --ro -t ext3 /dev/nd0 /sysroot
        pivot_root /sysroot /sysroot/initrd
        umount /initrd/proc

I am working with such diskless machine :-).
Feng Shuo

-----Original Message-----
From: address@hidden
[mailto:address@hidden On Behalf Of
Daniele Bellucci
Sent: Tuesday, December 02, 2003 2:29 AM
To: Feng Shuo
Cc: address@hidden
Subject: Re: Network booting with a disk image ?


On Mon, Dec 01, 2003 at 12:06:09PM +0800, Feng Shuo wrote:
|NBD (Network Block Device) on linux can make a remote image file (or
|device) as a local block device by TCP. You can use the block device as
|the root of your linux system. 

NBD on Linux doesn't work as a root dev!

-- 

Daniele.




"I could have made money this way, and perhaps amused myself writing
code. 
But I knew that at the end of my career, I would look back on years of 
building walls to divide people, and feel I had spent my life making the

world a worse place."                               
                                                          Richard
Stallman



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