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Set up Ubuntu 10.04 Server PV DomU at Xen 4.0 Dom0 (pvops 2.6.32.12 kernel) Dom0 on top of Ubuntu 10.04 Server

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Apr 29, 2010 2:09 AM EDT)
  • Story Type: Tutorial; Groups: Ubuntu
The procedure bellow in general follows Thiago’s Martins submission to xen-devel mailing list. However,sequence of steps has been changed, /dev/xen/evtchn device hard linked with with pvops kernel, git checkout procedure is more straight forward and one Change-set from xen-4.0-testing.hg back ported to Xen 4.0 to support grub2 notation ‘(hd0,1)’ specific for Ubuntu 10.04 aka Lucid Lynx. The way as Xen 4.0 Dom0 set up worked on Ubuntu 9.10 (04) Servers doesn’t work any longer.

ZFS 24 Support via (pygrub & fsimage.iso) patch for Xen 4.0 Dom0 (pvops 2.6.32.11) on top of F12

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Apr 14, 2010 4:40 PM EDT)
  • Story Type: Tutorial; Groups: Red Hat, Sun
Finally Mark Jonson submitted to xen-devel mailing list patch for ZFS 24 support at Xen 4.0. Patch mentioned bellow was successfully tested at Xen 4.0 Dom0 with pvops kernel 2.6.32.11 on top of Fedora 12 via modifying Michael’s Young xen-4.0.0.7.fc12.src.rpm and direct patching xen 4.0 official tarball on Ubuntu Karmic Koala Server.

Set up OSOL 2010-03 (build 134) at Xen 4.0 (2.6.32.10 pvops kernel) on top of Ubuntu Karmic Koala Server

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Apr 11, 2010 5:25 PM EDT)
  • Story Type: Tutorial; Groups: Oracle, Sun, Ubuntu
Due to absence in meantime pygrub support for ZFS 24 in Xen 4.0 unix kernel and boot_archive have to be copied off the disk to Dom0. In my case OSOL 134 PV DomU was able to obtain IP address just once after first boot up configuring SMF . Afterwards it required restarting ( or reenabling) service svc:/network/physical:nwam, what finally brought me to accomplish this procedure as OSOL service , because no analog of /etc/rc.local exists on OSOL.

Virt-install&Virt-manager at Xen 4.0-rc8 (2.6.32.10 pvops) Dom0 on top Ubuntu Karmic Koala Server

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Mar 26, 2010 10:39 PM EDT)
  • Story Type: Tutorial; Groups: Ubuntu
The final target of this post is to demonstrate how flexible is Ubuntu Karmic Koala Server environment. Build Xen 4.0-rc8 and the most recent stable pvops kernel 2.6.32.10 ( with DRM support). Loading Xen Instance followed by install Ubuntu’s Libvirt environment, providing utility virt-install for creating PV and HVM DomUs, virt-manager completely functional to manage any DomU been built via virt-install

Maintain Michael Young’s xen-4.0.0-0.2.rc4.fc12.src.rpm in sync with http://xenbits.xensource.com/xen-unstable.hg

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Mar 6, 2010 6:51 AM EDT)
  • Story Type: Tutorial; Groups: Fedora
Michael Young wrote xen-4.0.0-0.2.rc4.fc12.src.rpm for Xen-4-rc4 for Fedora 12 to install Hypervisor (changeset 20950). Schema bellow modifying content of mentioned src.rpm allows to build set of RPMS upgrading Xen Hypersor 4.0 matching current tip CS of http://xenbits.xensource.com/xen-unstable.hg,no matter of rc4 in fact, via hot upgrade without rebuilding development Xen System on top of F12 with recent PVOps kernel 2.6.32.9. Directory gemu-xen.git is only determined by value of QEMU_TAG in Config.mk file under xen-unstable tree clone.

The Book of Xen (Review)

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Mar 6, 2010 2:01 AM EDT)
  • Story Type: Reviews; Groups: Kernel, Red Hat
This is the best book i’ve ever read in my life about architecture of Xen Hypervisor, concepts of paravirtualization, dom0,domU, performance advantages of PV guests. I would say that core theoretical background of Xen Hypervisor is written pretty clear. It brings comprehension of Xen to persons, which even wouldn’t be willing to work on this topic too much. The last is very important from my standpoint.

Completely functional virsh (Libvirt 0.1.7-15) & GRUB2 Support at Xen 3.4.3 (pvops 2.6.32.9) on top of F12

Recent pulling GRUB2 supporting CSs into xen-3.4-testing.hg immediately makes sense to build xen 3.4.3-2.fc12.src.rpm to be able to set up current version of 3.4.3 Xen Hypervisor on Fedora 12 working pretty smoothly with Libvirt packages ( vs Xen 4.0) and the at same time supporting GRUB2 PV DomUs , say Ubuntu 9.10 Server or Debian Squeeze.

Set up Ubuntu Karmic Server (Grub2) PV Guest at Xen 4.0-rc4 Dom0 (2.6.32 pvops) on top of Fedora12

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Feb 22, 2010 6:22 AM EDT)
  • Story Type: Tutorial; Groups: Red Hat, Ubuntu
Due to set of CSs for GRUB 2 Support written by Ian Campbell usual sharing image devices between Ubuntu Karmic Koala Server HVM and PV Guests appears available at Xen-4.0 Linux Dom0. Fedora 12 has been selected due to presence of Libvirt 0.7.1 providing virt-install and virt-manager utilities.

Set up OSOL PV Guests (build<=131) via virsh on Xen 3.4.3 Dom0 on top of Ubuntu 9.10 Server

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Feb 5, 2010 9:09 PM EDT)
  • Story Type: Tutorial; Groups: Sun, Ubuntu
This posting is actually responding recent entry in Martin's Blog OpenSolaris 2009.06 domU on opensuse 11.2 dom0 Martin states:- Then I tried out a number of current linux distributions, but except for openSuSE none had a dom0 kernel out of the box which really is a shame. Seems I need to look more closely into KVM with virtio support. Via article bellow i try to explain that due to efforts of Jan Beulich and Andy Lyon xenified aka Suse Kernel 2.6.31.8(9) may be built on any Linux and along with the most recent stable Xen Hypervisor (3.4.2 and higher) port provide Xen Environment supporting OpenSolaris PV Guests , including the most recent unstable builds like 129,130,131 ( i mean vncserver behavior on OSOL PV DomU and GDM/VNC setup ).

Virsh (Libvirt 0.7.2) & managing PV DomUs on openSUSE 11.2

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Jan 10, 2010 2:24 PM EDT)
  • Story Type: Tutorial; Groups: Red Hat, SUSE
Recent “zypper update” on November’s openSUSE 11.2 release brought system to the most recent status. Current 2.6.31.8-xen kernel works fine. Seems like a next generation of xenified aka Suse kernels is on the go right now. However, i believe,that vm-install on recently updated 11.2 works same way as before maintenance update. So, in meantime vm-install doesn’t inderstand either HTTP or CDROM sources attempting to create PV Guest and virsh scripting appears to be the only one option to create Xen PV Guests manageable via virt-manager. Notice, that F12 PV Guest install doesn’t require HTTP or NFS share , pygrub performs install just via F12 ISO image , like OpenSolaris PV Guests get installed as usual.

Set up Xen 3.4.3-rc1 & Libvirt 0.7.0 Dom0 (with 2.6.31.8 xenified aka Suse kernel) on top of Ubuntu 9.10 Server

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Jan 4, 2010 4:59 PM EDT)
  • Story Type: Tutorial; Groups: Red Hat, Ubuntu
Install Libvirt 0.7.0 along with KVM creates environment with default Hypervisor QEMU . Two steps in procedure bellow makes Xen default Hypervisor on Ubuntu 9.10 .

Fedora 12 as PV Guest vs xVM 3.4.2 (b130)

  • http://bderzhavets.wordpress.com/; By Boris Derzhavets (Posted by dba477 on Dec 28, 2009 12:52 AM EDT)
  • Story Type: Tutorial; Groups: Red Hat, Sun
Setup bellow might seem strange unless you will become aware of some ongoing issues with VNC-Console behavior during virt-install running on the most recent OSOL build 130. View recent threads at xen-discuss forum@opensolaris.org

Build Sun xVM 3.4.2 from source on top OSOL 1002-128a

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Dec 12, 2009 2:56 AM EDT)
  • Story Type: Tutorial; Groups: Sun
Following bellow is step by step instruction how to clone Sun's xvm 3.4.2 repository and build packages , required to setup xVM 3.4.2 Dom0 on top of OpenSolaris 1002-128a. View also manuals at opensolaris.org How to Build the Development gates

Ubuntu Karmic Server PV & HVM DomUs sharing same image at Sun xVM 3.4.2 on top of OSOL 1002-128a

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Dec 7, 2009 5:10 PM EDT)
  • Story Type: Tutorial; Groups: Sun, Ubuntu
Set up Sun xVM 3.4.2 on top of opensolaris 1002-128a via binary packages been built by Pascal Gienger at Index of /software/xvm/3.4.2. Been performing testing bellow my major concern was ability Sun xVM 3.4.2 to handle PV DomUs with boot file systems of ext4fs type. Actually, two guests have been tested : F12 and Ubuntu Karmic Server, in both cases boot partition has been converted to ext3fs to create DomUs manageable via virsh ( virt-manager).

Setup OpenSolaris 1002-127 PV DomU at Xen 3.4.2 & Libvirt 0.7.1-15 (2.6.31.6 pvops) on top of F12 per John Levon

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Dec 2, 2009 2:18 PM EDT)
  • Story Type: Tutorial; Groups: Fedora, Sun
Blog entry "OpenSolaris 2008.11 guest domain on a Linux dom0" was written by John Levon and supposed to help community users to install OSOL 2008-11 DomU at Xen 3.1 Dom0 on top of Fedora 8. It’s core technique utilizes virsh , so is supposed to be applicable to current release of Libvirt as well. However , /usr/bin/xenstore-read fails to obtain IP address for OSOL DomU via XenStore at Xen 3.4.2 Dom0. Posting bellow fixes this issue and provide an option to build via virsh the most recent OSOL PV DomU at Xen 3.4.2 Dom0 & Libvirt 0.7.1-15 on Fedora 12.

Hot Hypervisor upgrade up to 3.4.2 on Xen 3.4.1 & Libvirt 0.7.1-15 Dom0 on top of Fedora 12

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Nov 28, 2009 7:12 PM EDT)
  • Story Type: Tutorial; Groups: Red Hat
We presume , that xen-3.4.1-5.fc12.src.rpm has been already installed on the system and Xen Host been built via mentioned “rpm” , Libvirt 0.7.1-15 and 2.6.31.6 pvops kernel is up and running at the time of upgrade. Apply following patch to /root/rpmbuild/SPECS/xen.spec

Setup Ubuntu 9.10 Server PV DomU at Xen 3.4.1 Dom0 (2.6.31.6 pvops kernel) on top of Fedora 12

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Nov 22, 2009 3:55 PM EDT)
  • Story Type: Tutorial; Groups: Red Hat, Ubuntu
A brief description of Xen 3.4.1 and Libvirt 0.7.1-15 deployment to Fedora 12 follows bellow. Next step is install Ubuntu Karmic Koala Server in HVM DomU with ext4fs image via virt-install. Ubuntu Karmic PV DomU gets loaded via pygrub profile due to Xen Hypervisor has been built on F12 along with e2fsprogs-devel package, what allows to handle PV DomUs images (F12,Ubuntu 9.10) having ext4fs on boot partition.

Setup Fedora 12 RC3 PV DomU at xVM 3.3.2 Dom0 OpenSolalris 1002-126

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Nov 11, 2009 9:30 PM EDT)
  • Story Type: Tutorial; Groups: Red Hat, Sun
Setup xvm per Sun the most recent instructions. As appears latter Virt-Manager is broken in 126 ( vs 124), but this is not the worst thing supposed to happen. Virt-install rejects to install Fedora12 PV DomU which is not yet in the dictionary in meantime. XML startup file for f12 allows to avoid this restriction mostly connected i believe with xVM version unable to handle ext4 FS for boot partition of Linux DomU

Java EE 6 web application (JSF 2.0 + JPA 2.0 + EJB 3.1) using Oracle, NetBeans and GlassFish

  • blog.arungupta.me; By Arun Gupta (Posted by dba477 on Oct 19, 2009 2:10 AM EDT)
  • Story Type: Reviews; Groups: Oracle, Sun
This application will use Java Server Faces 2.0 for displaying the results, Enterprise Java Beans 3.1 + Java Persistence API 2.0 for middle tier, and Oracle database server + GlassFish v3 as the backend. The most recent development bundle NetBeans 6.8 & GlassFish V3 build 68 would be good work for testing Download NetBeans IDE Build 200910170201

Setup Debian Lenny PV & HVM DomUs (64-bit) sharing same image device at Xen 3.4.1 & Libvirt 0.7.1-10 Dom0 on top of F12 (rawhide)

  • Xen Virtualization on Linux and Solaris; By Boris Derzhavets (Posted by dba477 on Oct 14, 2009 1:55 PM EDT)
  • Story Type: Tutorial; Groups: Debian, Red Hat, Sun
Posting bellow provides a workaround for failure of straight forward virt-install Debian Lenny 64-bit DomU via location http://ftp.us.debian.org/debian/dists/lenny/main/installer-a... . It doesn’t require debootstrap involvement and would work on OpenSolaris 2010-02-124 and Solaris Nevada 124 as well. Download mini installer iso image and virt-install Lenny HVM DomU

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