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xen-devel
Re: [Xen-devel] Re: Virtualization Test Day for F16 and Xen / dom0 testi
On Wed, Sep 14, 2011 at 05:45:39PM +0300, Pasi Kärkkäinen wrote:
> >
> > > > ([3]https://fedorahosted.org/fedora-qa/ticket/219). It takes time
> > > > for us
> > > > to setup test environment, and would be good to have some info in
> > > > advance.
> >
Ok, so some basic steps to test Xen dom0 functionality in Fedora 16:
- Install Fedora 16 Beta TC2 host, to become Xen dom0. Installable ISO images
available here:
http://alt.fedoraproject.org/pub/alt/stage/16-Beta.TC2/Fedora/
(and LIVE ISO's here:
http://alt.fedoraproject.org/pub/alt/stage/16-Beta.TC2/Live/).
- Disk partitioning on the host: First partition should be /boot as ext3,
for the rest of the disk use LVM volume group, and remember to leave free
space in the
volume group so you can later after installation create LVM volumes for the
VMs.
See these tutorials for an example about disk partitioning:
http://wiki.xen.org/xenwiki/Fedora13Xen4Tutorial
http://wiki.xen.org/xenwiki/RHEL6Xen4Tutorial
- After Fedora 16 is installed and everything works properly on baremetal,
including Internet access,
proceed to installing Xen and virtualization related packages:
yum install xen xen-hypervisor xen-runtime libvirt virt-manager virt-viewer
xorg-x11-xauth
- Enable automatic start of xend and libvirtd
chkconfig xend on
chkconfig libvirtd on
chkconfig --list xend
chkconfig --list libvirtd
- Add a suitable grub entry for Xen.
This grub entry is just an example, keep your own root device uuids/names etc
and modify to suit your setup:
menuentry 'Xen dom0, Fedora Linux 3.1.0-rc6' --class fedora --class gnu-linux
--class gnu --class os {
load_video
insmod part_gpt
insmod ext2
set root='(hd0,gpt2)'
search --no-floppy --fs-uuid --set=root
6b84e53a-8a3a-4465-ac5a-c1c98758e448
multiboot /xen-4.1.gz placeholder dom0_mem=1024M loglvl=all
guest_loglvl=all console_to_ring cpuidle=xen
echo 'Loading Linux 3.1.0-rc6 ...'
module /vmlinuz-3.1.0-rc6 root=/dev/mapper/VolGroup00-lv_root ro
rd.md=0 rd.dm=0 KEYTABLE=us debug loglvel=8 rd.lvm.lv=VolGroup00/lv_swap
SYSFONT=latarcyrheb-sun16 rd.luks=0 rd.lvm.lv=VolGroup00/lv_root
LANG=en_US.UTF-8
echo 'Loading initial ramdisk ...'
module /initramfs-3.1.0-rc6.img
}
grub entries will be automatically generated later, but currently grub/grubby
does not have all required patches to do it automatically.
- Reboot to Xen dom0!
- Verify Xen and xend works:
xm info
xm list
- Verify you have a bridge called "virbr0" (use: "brctl show"). It should get
created by libvirtd.
There should be a "dnsmasq" process running for virbr0 providing that bridge
a DHCP server with private IPs,
dns relay and NAT to internet, so you can use it for VM network installations.
- Install a Fedora 15 Xen PV domU:
First create a new LVM volume for the VM:
lvcreate -L30G -nf15_disk1 /dev/VolGroup00
(Replace VolGroup00 with your VG name.. use "vgdisplay" to check.)
Start actual installation:
virt-install -d -n f15 -r 1024 --vcpus=1 -f /dev/VolGroup00/f15_disk1 --vnc
-p -l
"ftp://ftp.funet.fi/pub/mirrors/fedora.redhat.com/pub/fedora/linux/releases/15/Fedora/x86_64/os/";
(replace the URL with your local Fedora mirror site).
virt-install will open a virt-viewer (VNC) graphical window of the guest
console (pvfb) where you can do the Fedora installation as usual.
- Install and test various other types of VMs, both PV and HVM.
- Try using file: disk backend (image files) aswell.
- Try using graphical "virt-manager" GUI to install Xen VMs.
- Disable automatic start of xend, reboot, and test xl / libxl,
also with virt-manager/virt-install.
That should get you started with testing.
Btw. I noticed some issues installing F16 Alpha Xen PV domU, so F16 needs some
more investigation/debugging before F16 final.
-- Pasi
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