Xen users - Jun 2008 - Kernel panic while starting my guest domain

Hi

Ive installed Fedora core 6 and enabled virtualization support.
Now I tried to create guest os with scientific linux 3 image file (
slc3-root.img )

Logical volumes compnode,swap and module have been created with the
following steps

lvcreate -L10G -n compnode vg
lvcreate -L1G -n compswap vg
lvcreate -L1G -n compswap vg
mkdir /mnt/tmp
mount -o loop slc3-root.img /mnt/tmp

Also in /mnt/tmp/etc/fstab



/dev/sda6                /                       ext3    defaults        1 1
none                    /dev/pts                devpts  gid=5,mode=620  0 0
proc                    /proc                   proc    defaults        0 0
none                    /dev/shm                tmpfs   defaults        0 0
/dev/sda8               swap                    swap    defaults        0 0
/dev/sda6               /lib/modules            ext2   defaults        0 1


My  /etc/xen/xmdefconfig looks like

def vmid_check(var, val):
    val = int(val)
    if val <= 0:
         raise ValueError
    return val
#Define the ''vmid'' variable so that ''xm
create'' knows about it.
xm_vars.var(''vmid'', use="Virtual machine id. Integer
greater than 0.",
check=vmid_check)

#Check the defined variables have valid values..
xm_vars.check()

#General settings

kernel = "/boot/vmlinuz-2.6.18-1.2798.fc6xen"
memory = 128
gateway = "172.16.10.1"
extra = "fastboot"
vif = ['''']
ramdisk = "/boot/initrd-2.6.18-1.2798.fc6xen.img"
if vmid == 1:
  disk =
[''phy:vg/compnode,sda7,w'',''phy:vg/compswap,sda8,w'',
''phy:vg/modules,sda6,r'']
  ip = "172.16.10.201"
  vif=[''bridge=xenbr0'']
  hostname = "compnode"
  name = "compnode"
# Set root device.

root = "/dev/sda7 ro"

while creating the xen domain with command
xm create -c vmid=1
Im getting the kernel panic error..

Is there any thing wrong with  my configurations??

Here is my Error


Creating root device.
Mounting root filesystem.
mount: could not find filesystem ''/dev/root''
Setting up other filesystems.
Setting up new root fs
setuproot: moving /dev failed: No such file or directory
no fstab.sys, mounting internal defaults
setuproot: error mounting /proc: No such file or directory
setuproot: error mounting /sys: No such file or directory
Switching to new root and running init.
unmounting old /dev
unmounting old /proc
unmounting old /sys
switchroot: mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init!

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