Xen Virtualization on Linux and Solaris

Install “kotd” (kernel of the day) via ftp://ftp.suse.com/pub/projects/kernel/kotd/openSUSE-11.3/x86_64/ kernel-xen-2.6.34.1-0.0.19.40d88ce.x86_64.rpm ( supporting udev 157). Next step supposed to be is to upgrade Xen 4.0 to support Lucid Grub2 syntax . What,actually, requires just one back port CS 21188 from xen-4.0-testing.hg, which is not in official 4.0 tarball been used for 11.3. The procedure bellow is pretty much standard and was described by me in details just to compare how much more flexible is patching Xen Hypervisor on Fedoras. In particular, all properly named by version rpms been built from src.rpm gets installed upgrading old ones right away with no questions and no additional zypper (yum) install run.
One more patch has been tested with Suse’s 11.3 version of Xen Hypervisor. It was ZFS 24 support per Mark Johnson ([1]).

# wget http://download.opensuse.org/source/distribution/11.3/repo/oss/suse/src/xen-0.0_21091_05-6.6.src.rpm
# rpm -iv xen-4.0.0_21091_05-6.6.src.rpm
# cd /usr/src/packages/SOURCES

Create 21188-grub2-fix.patch with raw content of CS 21188:-
http://xenbits.xensource.com/xen-4.0-testing.hg?raw-rev/065efaec5e71

# cd ../SPECS

Update xen.spec
……….
Version: 4.0.0_21091_05
# Old one 6.6
Release: 6.7
……….
Patch44: 21188-grub2-fix.patch
……….
%patch44 -p1

:wq

#zypper install LibVNCServer-devel SDL-devel acpica automake bin86 curl-devel dev86 \
graphviz latex2html libjpeg-devel libxml2-devel ncurses-devel openssl openssl-devel \
pciutils-devel python-devel texinfo transfig \
texlive texlive-latex \
glibc-32bit glibc-devel-32bit

# rpmbuild -bb ./xen.spec
# cd ../RPMS/x*
# zypper install xen-4.0.0_21091_05-6.7.x86_64.rpm \
xen-devel-4.0.0_21091_05-6.7.x86_64.rpm \
xen-doc-html-4.0.0_21091_05-6.7.x86_64.rpm \
xen-doc-pdf-4.0.0_21091_05-6.7.x86_64.rpm \
xen-kmp-default-4.0.0_21091_05_k2.6.34.0_12-6.7.x86_64.rpm \
xen-kmp-desktop-4.0.0_21091_05_k2.6.34.0_12-6.7.x86_64.rpm \
xen-libs-4.0.0_21091_05-6.7.x86_64.rpm \
xen-tools-4.0.0_21091_05-6.7.x86_64.rpm \
xen-tools-domU-4.0.0_21091_05-6.7.x86_64.rpm

During first run xen-tools-4.0.0_21091_05-6.6.x86_64.rpm was removed
xen-tools-domU-4.0.0_21091_05-6.7.x86_64.rpm was installed

Second step was

# zypper install xen-tools-4.0.0_21091_05-6.7.x86_64.rpm
what caused removing xen-tools-domU-4.0.0_21091_05-6.7.x86_64.rpm

Finally on working system :-

linux-y4jf:/usr/src/packages/RPMS/x86_64 # rpm -qa|grep xen|grep -v kernel
patterns-openSUSE-xen_server-11.3-22.1.x86_64
xen-doc-pdf-4.0.0_21091_05-6.7.x86_64
xen-libs-4.0.0_21091_05-6.7.x86_64
xen-kmp-default-4.0.0_21091_05_k2.6.34.0_12-6.7.x86_64
xen-devel-4.0.0_21091_05-6.7.x86_64
xen-doc-html-4.0.0_21091_05-6.7.x86_64
xen-kmp-desktop-4.0.0_21091_05_k2.6.34.0_12-6.7.x86_64
xen-tools-4.0.0_21091_05-6.7.x86_64
xen-4.0.0_21091_05-6.7.x86_64

Hence, the last line should be removed from inst.sh for smooth Hypervisor upgrade.
Activated via YAST xend, xendomains, libvirtd and rebooted Xen Host

host : linux-y4jf
release : 2.6.34.1-0.0.19.40d88ce-xen
version : #1 SMP 2010-07-30 10:41:56 +0200
machine : x86_64
nr_cpus : 4
nr_nodes : 1
cores_per_socket : 4
threads_per_core : 1
cpu_mhz : 2833
hw_caps : bfebfbff:20100800:00000000:00000940:0408e3fd:00000000:00000001:00000000
virt_caps : hvm
total_memory : 8150
free_memory : 26
free_cpus : 0
max_free_memory : 5533
max_para_memory : 5529
max_hvm_memory : 5508
node_to_cpu : node0:0-3
node_to_memory : node0:26
node_to_dma32_mem : node0:26
max_node_id : 0
xen_major : 4
xen_minor : 0
xen_extra : .0_21091_05-6.7
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 : 21091
xen_commandline : vgamode=0x31a vgamode=0x31a
cc_compiler : gcc version 4.5.0 20100604 [gcc-4_5-branch revision 160292] (SU
cc_compile_by : root
cc_compile_domain : site
cc_compile_date : Sat Jul 31 16:07:27 MSD 2010
xend_config_format : 4

Now /usr/bin/pygrub suppports Grub2’s syntax of Ubuntu 10.04
Create Ubuntu 10.04 Server HVM DomU :-

virt-install -n LucidHVM -r 2048 --hvm --vnc -f /dev/sdb5 -c /home/user1/lucidSRV.iso --debug

and LucidPVG.xml file to define Lucid Server PV DomU:

<domain type='xen'>
<name>LucidPVG</name>
<memory>2097152</memory>
<currentMemory>2097152</currentMemory>
<vcpu>1</vcpu>
<bootloader>/usr/bin/pygrub</bootloader>
<bootloader_args>-q</bootloader_args>
<os>
<type>linux</type>
</os>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<devices>
<emulator>/usr/lib/xen/bin/qemu-dm</emulator>
<disk type='block' device='disk'>
<driver name='phy'/>
<source dev='/dev/sdb5'/>
<target dev='xvda' bus='xen'/>
</disk>
<interface type='bridge'>
<mac address='00:16:3e:77:0b:94'/>
<source bridge='br0'/>
<script path='/etc/xen/scripts/vif-bridge'/>
<target dev='vif3.0'/>
</interface>
<console type='pty' tty='/dev/pts/1'>
<source path='/dev/pts/1'/>
<target port='0'/>
</console>
<input type='mouse' bus='xen'/>
<graphics type='vnc' port='5900' autoport='yes'/>
</devices>
</domain>






Runtime snapshots OSOL 134 PV DomU been started via virt-manager ( ZFS 24 support )





Back port ZFS 24 support to Suse’s 11.3 Xen Hypervisor
1. Add fsimage-zfs-24.patch ([1]) to /usr/src/packages/SOURCES
2. Change xen.spec as follows :-

..........
Version: 4.0.0_21091_05
# Old one 6.7
Release: 6.9
..........
Patch44: 21188-grub2-fix.patch
..........
Patch704: fsimage-zfs-24.patch
...........
%patch44 -p1
............
%patch704 -p1
............

:wq

# rpmbuild -bb ./xen.spec

This time Hypervisor upgrade has been run as follows :-

linux-y4jf:/usr/src/packages/RPMS/x86_64 # cat inst.sh
zypper install xen-4.0.0_21091_05-6.9.x86_64.rpm \
xen-devel-4.0.0_21091_05-6.9.x86_64.rpm \
xen-doc-html-4.0.0_21091_05-6.9.x86_64.rpm \
xen-doc-pdf-4.0.0_21091_05-6.9.x86_64.rpm \
xen-kmp-default-4.0.0_21091_05_k2.6.34.0_12-6.9.x86_64.rpm \
xen-kmp-desktop-4.0.0_21091_05_k2.6.34.0_12-6.9.x86_64.rpm \
xen-libs-4.0.0_21091_05-6.9.x86_64.rpm \
xen-tools-4.0.0_21091_05-6.9.x86_64.rpm

linux-y4jf:/usr/src/packages/RPMS/x86_64 # ./inst.sh
Loading repository data…
Reading installed packages…
Resolving package dependencies…

The following packages are going to be upgraded:
xen xen-devel xen-doc-html xen-doc-pdf xen-kmp-default xen-kmp-desktop xen-libs xen-tools

8 packages to upgrade.
Overall download size: 14.3 MiB. After the operation, additional 10.0 KiB will be used.
Continue? [y/n/?] (y): y
Retrieving package xen-libs-4.0.0_21091_05-6.9.x86_64 (1/8), 694.0 KiB (2.8 MiB unpacked)
Installing: xen-libs-4.0.0_21091_05-6.9 [done]
Retrieving package xen-kmp-desktop-4.0.0_21091_05_k2.6.34.0_12-6.9.x86_64 (2/8), 738.0 KiB (4.2 MiB unpacked)
Installing: xen-kmp-desktop-4.0.0_21091_05_k2.6.34.0_12-6.9 [done]
Retrieving package xen-kmp-default-4.0.0_21091_05_k2.6.34.0_12-6.9.x86_64 (3/8), 719.0 KiB (4.0 MiB unpacked)
Installing: xen-kmp-default-4.0.0_21091_05_k2.6.34.0_12-6.9 [done]

Retrieving package xen-doc-pdf-4.0.0_21091_05-6.9.x86_64 (4/8), 1.3 MiB (1.5 MiB unpacked)
Installing: xen-doc-pdf-4.0.0_21091_05-6.9 [done]
Retrieving package xen-doc-html-4.0.0_21091_05-6.9.x86_64 (5/8), 190.0 KiB (422.0 KiB unpacked)
Installing: xen-doc-html-4.0.0_21091_05-6.9 [done]
Retrieving package xen-4.0.0_21091_05-6.9.x86_64 (6/8), 6.3 MiB (25.0 MiB unpacked)
Installing: xen-4.0.0_21091_05-6.9 [done]
Retrieving package xen-tools-4.0.0_21091_05-6.9.x86_64 (7/8), 3.6 MiB (16.5 MiB unpacked)
Installing: xen-tools-4.0.0_21091_05-6.9 [done]
Additional rpm output:
Updating etc/sysconfig/xend…
Updating etc/sysconfig/xendomains…

Retrieving package xen-devel-4.0.0_21091_05-6.9.x86_64 (8/8), 867.0 KiB (5.0 MiB unpacked)
Installing: xen-devel-4.0.0_21091_05-6.9 [done]

References
1. http://old.nabble.com/-PATCH–RESUBMIT–sync-up-zfs-boot-support-in-pygrub-p28236835.html

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