[Xen-users] Trying to install ubuntu 10.04 on centos 5.5 w/ xen4.0

[Donny Brooks <dbrooks@xxxxxxxxxxxxxxxx>]

As the title states, I am trying to install a PV ubuntu 10.04 domu on my 
centos 5.5 xen 4.0 dom0. The steps I have attempted are as follows:
1 - lvcreate -n ubuntutest -L 8G domuvg
2 - wget 
http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/vmlinuz 

3 - wget 
http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/initrd.gz 

4 - cat ubuntu.xen
name      = "ubuntu"
memory    = 2048
disk      = ['phy:/dev/domuvg/ubuntutest,xvda,w' ]
vif       = [ 'bridge=br2' ]
kernel    = "/mnt/disk/vmlinuz"
ramdisk   = "/mnt/disk/initrd.gz"
vcpus     = 1
on_reboot = 'destroy'
on_crash  = 'destroy'

5 - xm create -c ubuntu.xen
... installation goes just fine ...

6 - grabbed the virtualized kernel and ramdisk from another running 
physical machine to use in step 7.
7 - cat ubuntu.xen.running
name = "ubuntu-test"
memory = 2048
disk = ['phy:/dev/domuvg/ubuntu-pv,xvda,w' ]
vif = [ 'bridge=br2' ]
kernel = "/etc/xen/ubuntu-kernel/vmlinuz-2.6.32-22-server"
ramdisk = "/etc/xen/ubuntu-kernel/initrd.img-2.6.32-22-server"
vcpus = 1
on_poweroff = 'destroy'
on_reboot = 'restart'
on_crash = 'restart'

8 - xm create -c ubuntu.xen.running
Using config file "./ubuntu.xen.running".
Started domain ubuntu-test (id=3)
                                 [    0.000000] Initializing cgroup 
subsys cpuset
[    0.000000] Initializing cgroup subsys cpu
[    0.000000] Linux version 2.6.32-22-server (buildd@yellow) (gcc 
version 4.4.3 (Ubuntu 4.4.3-4ubuntu5) ) #36-Ubuntu SMP Thu Jun 3 
20:38:33 UTC 2010 (Ubuntu 2.6.32-22.36-server 2.6.32.11+drm33.2)
[    0.000000] Command line:
[    0.000000] KERNEL supported cpus:
[    0.000000]   Intel GenuineIntel
[    0.000000]   AMD AuthenticAMD
[    0.000000]   Centaur CentaurHauls
[    0.000000] ACPI in unprivileged domain disabled
[    0.000000] BIOS-provided physical RAM map:
___snip_____

[    0.180128] XENBUS: Device with no driver: device/vbd/51712
[    0.180133] XENBUS: Device with no driver: device/vif/0
[    0.180138] XENBUS: Device with no driver: device/console/0
[    0.180155]   Magic number: 1:252:3141
[    0.180172] /build/buildd/linux-2.6.32/drivers/rtc/hctosys.c: unable 
to open rtc device (rtc0)
[    0.180181] BIOS EDD facility v0.16 2004-Jun-25, 0 devices found
[    0.180186] EDD information not available.
[    0.180291] Freeing unused kernel memory: 796k freed
[    0.180555] Write protecting the kernel read-only data: 7788k
Loading, please wait...
[    0.221772] udev: starting version 151
Begin: Loading essential drivers... ...
Done.
Begin: Running /scripts/init-premount ...
Done.
Begin: Mounting root file system... ...
Begin: Running /scripts/local-top ...
Done.
[    0.355393]  xvda: xvda1 xvda2 < xvda5 >
Gave up waiting for root device.  Common problems:
 - Boot args (cat /proc/cmdline)
   - Check rootdelay= (did the system wait long enough?)
   - Check root= (did the system wait for the right device?)
 - Missing modules (cat /proc/modules; ls /dev)
ALERT! does not exist. Dropping to a shell!


BusyBox v1.13.3 (Ubuntu 1:1.13.3-1ubuntu11) built-in shell (ash)
Enter 'help' for a list of built-in commands.

(initramfs)

From that it appears it is trying to boot on the xvda5 which is the 
swap partition. So I checked the fdisk layout of that lv and here is 
what I get:
Disk /dev/domuvg/ubuntu-pv: 8589 MB, 8589934592 bytes
255 heads, 63 sectors/track, 1044 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

                Device Boot      Start         End      Blocks   Id  System
/dev/domuvg/ubuntu-pv1               1         994     7977984   83  Linux
Partition 1 does not end on cylinder boundary.
/dev/domuvg/ubuntu-pv2             994        1045      407553    5  
Extended
/dev/domuvg/ubuntu-pv5             994        1045      407552   82  
Linux swap / Solaris

I just need a running pv ubuntu domu so I can do some testing with LTSP5 
and openldap. Is there an easier way to do this than with the "kernel" 
and "ramdisk" options? I don't want to deal with the pygrub issue with 
grub2 unless I just absolutely have to.
Thanks in advance for any assistance.

Donny B.

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