Re: [Xen-users] Install ubunto domU

[Pasi Kärkkäinen <pasik@xxxxxx>]

On Thu, May 27, 2010 at 02:21:25PM -0500, Donny Brooks wrote:
>  I read this and I gather I need to be running Xen 4.0 in order to run Ubuntu 
> 10.04 as a pv domu... is that correct? I am currently at 3.4.2 on a centos 
> 5.4 dom0 but need to run some ubuntu domu's very badly. Please advise!
> 

Well.. it depends.

Xen 4.0 pygrub supports ext4 /boot and grub2 grub.cfg config files.

So if you want to use pygrub to load the ubuntu 10.04 kernel from the guest, 
then you need Xen 4.0 (or a pygrub with the patches added).

But if you just have the ubuntu kernel/initrd in dom0, 
then you can pretty much use any old Xen version, I think.

-- Pasi

> 
> --
> 
> Donny B.
> 
> On Monday, May 17, 2010 10:39 PM CDT, Boris Derzhavets 
> <bderzhavets@xxxxxxxxx> wrote:
> 
> > > 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.
> >
> > Yes , you missing David's patch. Personally , i could back port it only to 
> > Xen 4.0,
> > even Xen 3.4.3 was not enough. Some other CSs from 4.0 are required for 
> > consistency and you don't know which ones.
> >
> > You are at 3.4.2 !
> >
> > I believe gitco did Xen 4.0 rpms. Gitgo's  4.0 src.rpm has to patched per 
> > David and rpms rebuilt. That 's in case you want "pygrub" to be bootloader 
> > for DomU . It's comfortable, but not required.
> >
> > Boris.
> >
> > --- On Mon, 5/17/10, David Markey <admin@xxxxxxxxxxx> wrote:
> >
> > From: David Markey <admin@xxxxxxxxxxx>
> > Subject: Re: [Xen-users] Install ubunto domU
> > To: "Nuno L. Ferreira" <nunolf@xxxxxxxxx>
> > Cc: "Boris Derzhavets" <bderzhavets@xxxxxxxxx>, "xen-users" 
> > <xen-users@xxxxxxxxxxxxxxxxxxx>
> > Date: Monday, May 17, 2010, 6:54 PM
> >
> > You 
> > need http://lists.xensource.com/archives/html/xen-devel/2010-04/msg00748.html
> >
> >
> > On 17 May 2010 23:24, Nuno L. Ferreira <nunolf@xxxxxxxxx> wrote:
> >
> > 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.
> >
> >
> >
> >
> >
> > -----Inline Attachment Follows-----
> >
> > _______________________________________________
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> >
> >
> >
> 
> 
> 
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