[Xen-users] exec of init (/sbin/init) failed!!!

[Constantinos Hassapis <conhassapis@xxxxxxxxx>]

Hi to all,

I switched to Fedora Core 5 and I now have a few problems when booting 
a domU virtual machine with Xen (as provided by the FC5 installation).
I get the following boot trace when trying to bot a domU:

Mounting proc filesystem
Mounting sysfs filesystem
Creating /dev
Creating initial device nodes
Setting up hotplug.
Creating block device nodes.
Creating root device.
Mounting root filesystem.
kjournald starting.  Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
Setting up other filesystems.
Setting up new root fs
no fstab.sys, mounting internal defaults
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
exec of init (/sbin/init) failed!!!: No such file or directory
Kernel panic - not syncing: Attempted to kill init!

I have tried both a real block device and a file-backed
 virtual block 
device
 for the
 root file-system, without success.
I have also tried to change the configuration file in many ways. I have 
changed the file system from ro to be rw, and I have also tried to boot 
with and without initrd.

I followed the instructions form the Xen user manual to create the root 
file-system (first copy the  dirs that root, dev, var, etc, usr, bin, 
sbin, lib  and then create the proc, sys, home, tmp dirs).

dd if=/dev/zero of=vm1disk bs=1k seek=2048k count=1

mkfs -t ext3 vm1disk

mount -o loop vm1disk /mnt

cp -ax /{root,dev,var,etc,usr,bin,sbin,lib} /mnt
mkdir /mnt/{proc,sys,home,tmp}

umount /mnt

I used the following config file for the domU:

kernel = "/boot/vmlinuz-2.6.17-1.2157_FC5xenU"
ramdisk = "/boot/initrd-2.6.17-1.2157_FC5xenU.img"
memory = 256
disk = [ 'file:/root/vm1disk,sda1,w' ]
name = "ExampleDomain"
vif = [ '' ]
root =
 "/dev/sda1"
extra = "4"

The
 /etc/fstab file
 of the file system that the vm will use is:
/dev/sda1  /          ext3    defaults        1 1
none       /dev/pts   devpts  gid=5,mode=620  0 0
none       /dev/shm   tmpfs   defaults        0 0
none       /proc      proc    defaults        0 0
none       /sys       sysfs   defaults        0 0

And I have also tried with the following alternate versions of 
/etc/fstab:
1)
/dev/sda1  /          ext3    defaults        1 1

2)
/dev/sda1   /        ext3    defaults        0 0
none        /proc    proc    defaults        0 0
none        /dev/pts devpts  gid=2,mode=620  0 0

3)
/dev/sda1   /        ext3    defaults        1 1
none        /proc    proc    defaults        0 0
none        /dev/pts devpts  gid=2,mode=620  0 0

I have allready check that the init file exits. 

Note that I have succesfully managed to boot a vm using a file system
 
image from tty-linux5.0. So, my assumption is that the problems is 
related to the file
 system image that I use
 for the Fedora install.

Thanks in advance for you help,

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