Xen on Fedora 13

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 AN!Wiki :: How To :: Xen on Fedora 13

Warning: This is currently a dumping ground for notes. DO NOT FOLLOW THIS DOCUMENT'S INSTRUCTIONS. Seriously, it could blow up your computer or cause winter to come early.



Installing from RPM

yum install xen


Building from Source

This is the only way to get Xen 4.0 at the time of writing. It seems to not play nicely with DRBD though.

All of this is from here.

Install Requirements

Install:

yum -y groupinstall "Development Libraries"
yum -y groupinstall "Development Tools"
yum -y install transfig wget texi2html libaio-devel dev86 glibc-devel e2fsprogs-devel gitk mkinitrd iasl xz-devel bzip2-devel pciutils-libs pciutils-devel SDL-devel libX11-devel gtk2-devel bridge-utils PyXML qemu-common qemu-img mercurial
yum -y install glibc-devel.i686

Build from source

Note: These are the tools, not dom0.

From mercurial, stable tag.

Get version 4.0.0 (or newer, depending on what the latest stable is):

hg clone -r RELEASE-4.0.0 http://xenbits.xen.org/xen-4.0-testing.hg

Go into the directory and compile the tools:

cd xen-4.0-testing.hg
make xen
make tools
make stubdom

Install the tools (assuming compile worked):

make install-xen
make install-tools
make install-stubdom

Done.

dom0

From RPM

This uses a kernel built for Fedora 12, but it works on Fedora 13.

Add the repo:

cd /etc/yum.repos.d/
wget -c http://myoung.fedorapeople.org/dom0/myoung.dom0.repo

Edit the repo file and change the two enabled=0 entries to enabled=1.

vim /etc/yum.repos.d/myoung.dom0.repo
[myoung-dom0]
name=myoung's repository of Fedora based dom0 kernels - $basearch
baseurl=http://fedorapeople.org/~myoung/dom0/$basearch/
enabled=1
gpgcheck=0

[myoung-dom0-source]
name=myoung's repository of Fedora based dom0 kernels - Source
baseurl=http://fedorapeople.org/~myoung/dom0/src/
enabled=1
gpgcheck=0

Install the Xen dom0 kernel (edit the version number if needed).

yum install kernel-2.6.32.17-157.xendom0.fc12.x86_64

The entry in grub's /boot/grub/menu.lst won't work. You will need to edit it to look like this:

Note: Copy and modify the entry created by the RPM. Simply copying this entry will almost certainly not work!

Xen 4.0.0:

title Xen 4.0.0, Linux kernel 2.6.32.17-157.xendom0.fc12.x86_64
	root   (hd0,0)
	kernel /xen-4.0.0.gz dom0_mem=1024M
	module /vmlinuz-2.6.32.17-157.xendom0.fc12.x86_64 ro root=/dev/mapper/vg_01-lv_root rd_MD_UUID=4f48439e:39ec22e8:a6154857:c340036f rd_LVM_LV=vg_01/lv_root rd_LVM_LV=vg_01/lv_swap rd_NO_LUKS rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
	module /initramfs-2.6.32.17-157.xendom0.fc12.x86_64.img

Xen 3.x:

title Xen 3.4.x, Linux kernel 2.6.32.17-157.xendom0.fc12.x86_64
	root   (hd0,0)
	kernel /xen.gz dom0_mem=1024M
	module /vmlinuz-2.6.32.17-157.xendom0.fc12.x86_64 ro root=/dev/mapper/vg_01-lv_root rd_MD_UUID=4f48439e:39ec22e8:a6154857:c340036f rd_LVM_LV=vg_01/lv_root rd_LVM_LV=vg_01/lv_swap rd_NO_LUKS rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYTABLE=us rhgb quiet
	module /initramfs-2.6.32.17-157.xendom0.fc12.x86_64.img


Add this to /etc/fstab

vim /etc/fstab
xenfs                   /proc/xen               xenfs   defaults        0 0

Make cman and xend play nice

By default under Fedora 13, cman will start before xend. This is a problem because xend takes the network down as part of it's setup. This causes totem communication to fail which leads to fencing.

To avoid this, edit /etc/init.d/cman and tell it to start after xend by adding "xend" to Required-Start and Required-Stop boot facility lists.

When done, the cman LSB header should look like this:

vim /etc/init.d/cman
### BEGIN INIT INFO
# Provides:             cman
# Required-Start:       $network $time xend
# Required-Stop:        $network $time xend
# Default-Start:
# Default-Stop:
# Short-Description:    Starts and stops cman
# Description:          Starts and stops the Cluster Manager set of daemons
### END INIT INFO

Lastly, remove and re-add the cman daemon and add the xend daemon to the start list:

chkconfig cman off
chkconfig cman on
chkconfig xend on

Done. You should be able to reboot into the dom0 kernel now.

Misc

Source RPM: xen-4.0.1-0.1.rc6.fc13.src.rpm

 

Any questions, feedback, advice, complaints or meanderings are welcome.
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