[Xen-users] invalid kernel errors while booting newly installed guest OS

[jaeyong yoo <y.jaeyong@xxxxxxxxx>]

Hello,

When I'm trying to boot with newly installed guest OS, I'm having the following error message.

$ sudo xm create /etc/xen/ubuntu.cfg -c

> Error: (2, 'Invalid kernel', 'elf_xen_note_check: ERROR: Will only load images built for the generic loader or Linux images')

I'm absolutely clueless and any help would be really appreciated.

Here goes the detail configuration.

1) I install ubuntu desktop 12.04 in a machine (32-bit intel Core 2 CPU with 2GB memory) 

2) install xen by 

  $ sudo apt-get install xen-hypervisor-4.1-i386 xen-tools xen-utils-4.1 xen-utils-common

3) reboot

4) xen looks working OK at dom0 and I check this with the following command

$ xm list

   Name                                        ID   Mem VCPUs      State   Time(s)

   Domain-0                                     0  1024     1     r-----    244.9

5) after creating logical volume using lvm (the dev is /dev/vgubuntu/ubuntu) make a configuration file (/etc/xen/ubuntu.cfg) as follows

name = "ubuntu"

memory = 512

disk = ['phy:/dev/vgubuntu/ubuntu,xvda,w']

vif = [' ']

kernel = "/var/lib/xen/images/ubuntu-netboot/vmlinuz"

ramdisk = "/var/lib/xen/images/ubuntu-netboot/initrd.gz"

extra = "debian-installer/exit/always_halt=true -- console=hvc0"

6) Download vmlinuz and initrd file as below and place them at /var/lib/xen/images/ubuntu-netboot/

$ wget http://kr.archive.ubuntu.com/ubuntu/dists/precise/main/installer-i386/current/images/netboot/xen/initrd.gz

$ wget http://kr.archive.ubuntu.com/ubuntu/dists/precise/main/installer-i386/current/images/netboot/xen/vmlinuz

7) installing the guest os using the command below

$ sudo xm create /etc/xen/ubuntu.cfg -c

8) while installing, I set the filesystem ext3 in the guest OS.

9) everything looks normal. The console say the installation is completed.

10) After installing, I change the xen configuration file  (/etc/xen/ubuntu.cfg)  as follows. 

name = "ubuntu"

memory = 512

disk = ['phy:/dev/vgubuntu/ubuntu,xvda,w']

vif = [' ']

bootloader = "pygrub"

11) And, i try to boot the Guest OS for the first time, I see this error.

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