Xen Virtualization on Linux and Solaris

Using Ubuntu as a Xen guest is now a supported option included in the standard server kernel and is a choice when building virtual machines with python-vm-builder. Install Ubuntu Intrepid Server HVM DomU:-
[root@ServerCentOS52 isos]# virt-install
Would you like a fully virtualized guest (yes or no)? This will allow you to run unmodified operating systems. yes
What is the name of your virtual machine? IntrepidHVM
How much RAM should be allocated (in megabytes)? 2048
What would you like to use as the disk (file path)? /dev/sda9
Would you like to enable graphics support? (yes or no) yes
What is the virtual CD image, CD device or install location? /etc/xen/isos/intrepidsrv.iso
Starting install…
Creating domain… 0 B 00:00



When done create PV DomU profile:-
[root@ServerCentOS52 vm]# cat intrepid.cfg
memory = 2048
name = “IntrepidPV”
vif = [ ‘mac=00:16:3e:00:00:00’ ]
disk = [ ‘phy:/dev/sda9,xvda,w!’]
vfb = [‘type=vnc,vncunused=1’]
Start PV DomU:-
[root@ServerCentOS52 vm]# xm create intrepid.cfg
Using config file “./intrepid.cfg”.
Started domain IntrepidPV
[root@ServerCentOS52 vm]# vncviewer localhost:0
Nicely brings you to login prompt for Ubuntu Server Intrepid PV DomU.



Tasksel is running attempting to install “Ubuntu Desktop”:-



Reboot PV DomU and setup VNC per [1] , including workaround for Gnome Settings Daemon issue.





[root@ServerCentOS52 vm]# xm list -l IntrepidPV
(domain
(domid 2)
(on_crash restart)
(uuid 43c6427d-52d4-9dd5-a38c-5c7898a01762)
(bootloader_args )
(vcpus 1)
(name IntrepidPV)
(on_poweroff destroy)
(on_reboot restart)
(bootloader )
(maxmem 2048)
(memory 2048)
(shadow_memory 0)
(features )
(on_xend_start ignore)
(on_xend_stop ignore)
(start_time 1225178132.64)
(cpu_time 39.664607359)
(online_vcpus 1)
(image
(linux
(kernel )
(device_model /usr/lib64/xen/bin/qemu-dm)
(notes
(HV_START_LOW 18446603336221196288)
(FEATURES ‘!writable_page_tables|pae_pgdir_above_4gb’)
(VIRT_BASE 18446744071562067968)
(GUEST_VERSION 2.6)
(PADDR_OFFSET 0)
(GUEST_OS linux)
(HYPERCALL_PAGE 18446744071564201984)
(LOADER generic)
(SUSPEND_CANCEL 1)
(PAE_MODE yes)
(ENTRY 18446744071569531392)
(XEN_VERSION xen-3.0)
)
)
)
(status 2)
(state -b—-)
(store_mfn 2233833)
(console_mfn 2233832)
(device
(vif
(mac 00:16:3e:00:00:00)
(script vif-bridge)
(uuid 150a194e-8c4c-d3b9-7142-a5dd768c809b)
(backend 0)
)
)
(device
(vbd
(protocol x86_64-abi)
(uuid 952c5b6a-896b-2a66-3b30-704ab5f692d0)
(dev xvda:disk)
(uname phy:/dev/sda9)
(mode ‘w!’)
(backend 0)
(bootable 1)
(VDI )
)
)
(device (vkbd (backend 0)))
(device
(vfb
(vncunused 1)
(uuid d8ab575f-80a8-7fd9-7c18-13351874db9a)
(location localhost:5900)
(type vnc)
(display :0.0)
(xauthority /tmp/.gdmY1JZJU)
)
)
(device
(console
(protocol vt100)
(location 2)
(uuid 512ee61a-d7f2-6a35-7411-6f94c81f402e)
)
)
)

*************************************
To replace vfb with seial console
*************************************
Copy vmlinuz-2.6.27-7-server,initrd.img-2.6.27-7-server
of image device to Dom0 and create profile as follows:-

[root@ServerCentOS52 vm]# cat intrepid.conf
memory = 4096
name = “IntrepidPVC”
kernel=”/etc/xen/vm/vmlinuz-2.6.27-7-server”
ramdisk=”/etc/xen/vm/initrd.img-2.6.27-7-server”
root=”/dev/xvda1 ro”
extra = ‘2 console=hvc0’
vif = [ ‘mac=00:16:3e:00:00:00’ ]
disk = [ ‘phy:/dev/sdb14,xvda,w!’]
**************************************
Modify /etc/event.d/tty1 at DomU :-
**************************************
# cat /etc/event.d/tty1
# tty1 – getty
#
# This service maintains a getty on tty1 from the point the system is
# started until it is shut down again.

start on stopped rc2
start on stopped rc3
start on stopped rc4
start on stopped rc5

stop on runlevel 0
stop on runlevel 1
stop on runlevel 6

respawn
exec /sbin/getty 38400 hvc0
*********************
and run at Dom0 :-
*********************
# xm create -c intrepid.conf
Pygrub profile may be used for same purpose as well. View for instance:-
Pygrub&Loading Ubuntu Intrepid Server PV DomU via serial console at Xen 3.3 CentOS 5.2 Dom0
References.
1.Attempt of VNC setup on Ubuntu Hardy PV DomU at Xen 3.3 CentOS 5.2 Dom0 (all 64-bit)

This entry was posted on Tuesday, October 28th, 2008 at 8:09 am and is filed under Uncategorized. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.