Re: [Xen-users] Install ubunto domU

["Nuno L. Ferreira" <nunolf@xxxxxxxxx>]

Dear *, Boris

I tried to follow your steps (installing Lucid x86_64 PV domU on a 
CentOS 54 x86_64 dom0, running xen 3.4.2 from gitco) ... but was not 
successful. Something is still escaping me.
Installation went just fine till the end after a "xm create -c 
lucid.xen" (see below).
After installation (without any modifications to what was installed) I 
edited the xen config file (test.xen, see below) to boot with pygrub 
instead. But I get the following error:
Error: Boot loader didn't return any data!

I checked that the new domU does not have /usr/bin/pygrub, and this 
explains the error.
So Boris, how did you boot your ubunto based domU after a netboot 
installation?
I did not tried yet the debootstrap method also suggested ... first I 
want to know what I'm doing wrong here.
I'm a bit lost on setting up an ubunto domU, first time getting outside 
RedHat like OSes. So if there are some good working links to 
blogs/tutorials on how to install ubunto domU's on RedHat like dom0's 
I'll appreciate.
Cheers,
N.

P.S. Steps taken :

1 - lvcreate -n domu.ubunto.lucid -L 4G vg1
2 - mkfs.ext3 /dev/vg1/domu.ubunto.lucid
3 - wget 
http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/vmlinuz
4 - wget 
http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/initrd.gz
5 - cat lucid.xen
name      = "lucid"
memory    = 1024
disk      = ['phy:/dev/vg1/domu.ubunto.lucid,xvda,w' ]
vif       = [ 'bridge=eth0' ]
kernel    = "/mnt/dom0/data/domu.setup/ubunto/lucid/vmlinuz"
ramdisk   = "/mnt/dom0/data/domu.setup/ubunto/lucid/initrd.gz"
vcpus     = 1
on_reboot = 'destroy'
on_crash  = 'destroy'

6 - xm create -c lucid.xen
... installation goes just fine ...
7 - cat test.xen
name        = "test"
memory      = 512
maxmem      = 1024
bootloader  = '/usr/bin/pygrub'
disk        = ['phy:/dev/vg1/domu.spyder.root,xvda,w' ]
vif         = [ 'bridge=eth0' ]
vcpus       = 1
on_poweroff = 'destroy'
on_reboot   = 'restart'
on_crash    = 'restart'

8 - xm create -c test.xen
Using config file "./test.xen".
Error: Boot loader didn't return any data!




Boris Derzhavets wrote:
> I was able to start installer :
>
> root@ServerLnx:/home/boris/ubuntu# wget 
> http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/vmlinuz
> --2010-05-13 12:36:14--  
> http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/vmlinuz
> Resolving archive.ubuntu.com... 91.189.92.167, 91.189.88.30, 91.189.88.31, ...
> Connecting to archive.ubuntu.com|91.189.92.167|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 4037888 (3.9M) [text/plain]
> Saving to: `vmlinuz'
>
> 100%[========================================================================>] 4,037,888    101K/s   in 27s    
>
> 2010-05-13 12:36:41 (144 KB/s) - `vmlinuz' saved [4037888/4037888]
>
> root@ServerLnx:/home/boris/ubuntu# wget 
> http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/initrd.gz
> --2010-05-13 12:37:02--  
> http://archive.ubuntu.com/ubuntu/dists/lucid/main/installer-amd64/current/images/netboot/xen/initrd.gz
> Resolving archive.ubuntu.com... 91.189.92.166, 91.189.92.167, 91.189.88.30, ...
> Connecting to archive.ubuntu.com|91.189.92.166|:80... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 9678415 (9.2M) [application/x-gzip]
> Saving to: `initrd.gz'
>
> 100%[========================================================================>] 9,678,415    200K/s   in 60s    
>
> 2010-05-13 12:38:03 (156 KB/s) - `initrd.gz' saved [9678415/9678415]
>
> root@ServerLnx:/home/boris/ubuntu# cat ubuntu.cfg
> name="U10PV"
> memory=2048
> disk = ['phy:/dev/sdb5,xvda,w' ]
> vif = [ 'bridge=eth0' ]
> # vfb = [ 'type=vnc,vncunused=1']
> kernel = "/home/boris/ubuntu/vmlinuz"
> ramdisk = "/home/boris/ubuntu/initrd.gz"
> vcpus=2
> on_reboot = 'restart'
> on_crash = 'restart'
>
> # xm create -c ubuntu.cfg
>
> and see several obvious disadvantages (vs HVM convertion) :
>
> 1. VFB doesn't work
> 2. After selecting local mirror "Installing base system" is already running for 
> 15 min
> at 2MB/sec ADSL connection.
>
> Boris.
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