Re: [Xen-users] Re: Running Xen 4.0.0-rc8 with Linux 2.6.32.10 paravirt_ops dom0 on top of Ubuntu Lucid 10.04 64bits.

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

Hi Thiago,

1. In case i would hard link /dev/xen/evtchn device with kernel ( in meantime 2.6.32.12)

This entry to /etc/modules would become unnecessary :-
echo "xen-evtchn" >> /etc/modules

2. I will check shortly , that
        # apt-get build-dep xen-3.3 (causes more then 300 MB download)
is not required as well

I believe

apt-get install libcurl4-openssl-dev \
xserver-xorg-dev \
python2.6-dev \
mercurial gitk \
build-essential \
libncurses5-dev \
uuid-dev gawk \
gettext texinfo bcc \
bridge-utils iasl

would be enough to build Xen 4.0 hypervisor , tools and pvops kernel

Kernel might be built in Debian way as you suggested (apt-get install dpkg-dev debhelper) or not.
It should not be matter as well.

If i am wrong about build Xen 4.0 Dom0 with 2.6.32.12 kernel on top of Ubuntu 10.04 Server , please advise.

Thanks
Boris.
--- On Fri, 3/26/10, Martinx - ジェームズ <thiagocmartinsc@xxxxxxxxx> wrote:

From: Martinx - ジェームズ <thiagocmartinsc@xxxxxxxxx>
Subject: [Xen-users] Re: Running Xen 4.0.0-rc8 with Linux 2.6.32.10 paravirt_ops dom0 on top of Ubuntu Lucid 10.04 64bits.
To: "Xen List" <xen-users@xxxxxxxxxxxxxxxxxxx>
Date: Friday, March 26, 2010, 10:56 AM

Hi!

 My "xm info" shows:

root@tcmc-dell:~# xm in
host                   : tcmc-dell
release                : 2.6.32.10
version                : #2 SMP Wed Mar 24 18:52:25 BRT 2010
machine                : x86_64
nr_cpus                : 2
nr_nodes               : 1
cores_per_socket       : 2
threads_per_core       : 1
cpu_mhz                : 2992
hw_caps                : bfebfbff:20100800:00000000:00000940:0408e3fd:00000000:00000001:00000000
virt_caps              : hvm
total_memory           : 3794
free_memory            : 643
node_to_cpu            : node0:0-1
node_to_memory         : node0:643
node_to_dma32_mem      : node0:580
max_node_id            : 0
xen_major              : 4
xen_minor              : 0
xen_extra              : .0-rc8
xen_caps               : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p hvm-3.0-x86_64
xen_scheduler          : credit
xen_pagesize           : 4096
platform_params        : virt_start=0xffff800000000000
xen_changeset          : Fri Mar 26 10:29:38 2010 +0000 21074:542211ba675c
xen_commandline        :
cc_compiler            : gcc version 4.4.3 (Ubuntu 4.4.3-4ubuntu2)
cc_compile_by          : root
cc_compile_domain      : worldweb.office
cc_compile_date        : Fri Mar 26 10:54:13 BRT 2010
xend_config_format     : 4

martinx@tcmc-dell:~$ glxinfo
name of display: :0.0
display: :0  screen: 0
direct rendering: Yes

Cheers!
Thiago

2010/3/26 Martinx - ジェームズ <thiagocmartinsc@xxxxxxxxx>

Hi!

 This is a quick guide to help us to try the new Xen.
 Also I have the composite window manager on top of the Xen! With full 3D support!

 To achieve this I do:

1- Install your Ubuntu Desktop 10.4 beta1 and upgrade your system;

1.1 - Install some packages:

 aptitude install build-essential libncurses5-dev dpkg-dev debhelper fakeroot

2- Download and install a new kernel with dom0 pv_ops enabled:

 sudo -s
 cd /usr/src
 git clone git://git.kernel.org/pub/scm/linux/kernel/git/jeremy/xen.git linux-2.6-xen
 cd linux-2.6-xen
 git pull
 git reset --hard
 git checkout -b xen/stable origin/xen/stable
 git pull

2.1 - Download the kernel config file attached to this mail (config-for-xen-2.6.32.10-pvops):

 Copy the config file to the kernel source dir:

 cp ~Downloads/config-for-xen-2.6.32.10-pvops /usr/src/linux-2.6-xen/.config

 You can see the differences of my config file against the Lucid one:

 diff /boot/config-2.6.32-17-generic ~Downloads/config-for-xen-2.6.32.10-pvops | vim -

 ...both are close to each other.

2.2 Configure, compile and install:
 
 make menuconfig # Enable the dom0 support and the Xen backend/frontend/xenfs stuffs...
 make
 chmod g-s /usr/src -R     # To avoid the error: "dpkg-deb: control directory has bad permissions 2755 (must be >=0755 and <=0775)"
 make dep-pkg
 dpkg -i ../linux-image*2.6.32.10*.deb
 depmod 2.6.32.10
 update-initramfs -c -k 2.6.32.10
 update-grub
 echo "xen-evtchn" >> /etc/modules

 Now you can try your new kernel without Xen, if you want, it should work smootly.

3- Download and install the latest Xen:

 Preparing your environment:

 apt-get build-dep xen-3.3
 aptitude install uuid-dev iasl texinfo

 Download and compile:

 cd /usr/src
 hg clone -r 4.0.0-rc8 http://xenbits.xensource.com/xen-unstable.hg
 cd xen-unstable.hg
 make xen
 make tools
 make stubdom
 make install-xen
 make install-tools PYTHON_PREFIX_ARG=
 make install-stubdom

 update-rc.d xend defaults 20 21
 update-rc.d xendomains defaults 21 20

4- Configuring your Grub2 through the file /etc/grub.d/40_custom:

---- cut here ----
#!/bin/sh
exec tail -n +3 $0
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
menuentry "Xen 4.0.0-rc8 / Ubuntu 10.4 kernel 2.6.32.10 pvops" {
insmod ext2
set root=(hd0,1)
multiboot (hd0,1)/xen-4.0.0-rc8.gz dummy=dummy
module (hd0,1)/vmlinuz-2.6.32.10 dummy=dummy root=/dev/mapper/HyperDeskVG01-tcmc--dell--lucid ro
module (hd0,1)/initrd.img-2.6.32.10
}
---- cut here ----

 Don't forget to change your "root=" option of your Linux!

 Run update-grub again:

 update-grub

5- Reboot into your new dom0!

 reboot

6- Look if your Xen is up and running

 xm list
 xm info

 .. if not:

/etc/init.d/xendomains stop
/etc/init.d/xend stop
/etc/init.d/xend start
/etc/init.d/xendomains start

 xm list
 xm info

-
 Cheers!
 Thiago

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