[Lguest] Creating distro root disk image

[Jason Yeh]

Rusty Russell wrote:
 > On Thu, 2007-08-16 at 19:01 -0500, Jason Yeh wrote:
 >> hi all,
 >>
 >> I tried to follow the instructions given in lguest.txt on creating root
 >> image from distro iso. However, the instructions shed no light on how
 >> the rootfile should be partitioned during distro installation. My
 >> several attempts to create root image all failed with guest kernel
 >> failing to mount root with error message:
 >>
 >> 	No filesystem could mount root, tried: ext3 ext2
 >> 	.Kernel panic - not syncing: VFS: Unable to mount root fs ...
 >>
 >> I tried with and without bootloader and with and without swap. All
 >> attemps were done with one huge root partition under QEMU.
 >>
 >> My question is that how should the rootfile be partitioned during distro
 >> install running QEMU so it will be useable by lguest guest? Thanks.
 >
 > Hi Jason,
 >
 > 	What does "file rootfile" give, and what was your lguest command line?
 >

This is the only image left on the hard disk:

jyeh at socrates:~/vmware/Ubuntu$ file guestos.img
guestos.img: x86 boot sector; partition 1: ID=0x83, active, starthead 1,
startsector 63, 40098177 sectors; partition 2: ID=0x5, starthead 254,
startsector 40098240, 1831410 sectors, code offset 0x48

The lguest command is:
sudo /home/jyeh/Dev/linux-2.6-git/Documentation/lguest/lguest 64m
/home/jyeh/Dev/linux-2.6-git/vmlinux --tunnet=192.168.19.1
--block=/home/jyeh/vmware/Ubuntu/guestos.img root=/dev/lgba

The img file is converted from VMWare vmdk file and verified to work 
with QEMU.

Jason