On Fri, Jan 15, 2010 at 01:54:09PM +0200, Pasi Kärkkäinen wrote:
> Hello,
>
> I thought of writing some information about running Fedora 12 Xen guests
> and also Fedora 12 Xen hosts/dom0.
>
> Fedora 12 includes the upstream Linux pv_ops Xen domU support in the default kernel.
> By using virt-install or virt-manager you can install Fedora 12 Xen PV
> (paravirtual) guests directly from network, for example on RHEL 5.4,
> CentOS 5.4, or Fedora Xen dom0/host.
>
> If you want to run Fedora 12 Xen dom0 (host), there are some extra steps
> needed. Fedora 12 ships with Xen hypervisor and management tools
> (Xen 3.4.1, and Xen 3.4.2 in the F12 updates), but the required Xen dom0
> capable host kernel is not included in Fedora atm/yet.
>
> ...
>
Oh, and here's an example of how to configure things in grub.conf for
Xen dom0.
Normal VGA console:
title Fedora Xen 3.4.2 / 2.6.31.6 dom0 kernel
root (hd0,0)
kernel /xen.gz dom0_mem=512M loglvl=all guest_loglvl=all
module /vmlinuz-2.6.31.6 ro root=/dev/mapper/vg_f12test-lv01 SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=fi nomodeset
module /initrd-2.6.31.6.img
Note the "nomodeset" option that is currently needed.
And also an example for using the onboard serial port as a serial console
for debugging and logging the boot process:
title Fedora Xen 3.4.2 with serial console / 2.6.31.6 dom0 kernel
root (hd0,0)
kernel /xen.gz dom0_mem=512M loglvl=all guest_loglvl=all com1=38400,8n1 console=com1
module /vmlinuz-2.6.31.6 ro root=/dev/mapper/vg_f12test-lv01 SYSFONT=latarcyrheb-sun16 LANG=en_US.UTF-8 KEYTABLE=fi nomodeset console=hvc0 earlyprintk=xen nomodeset
module /initrd-2.6.31.6.img
Using a virtual serial port like SOL (Serial Over LAN) from a server management processor,
or an IPMI card, or Intel AMT/vPro management chip might require you to specify the
IOport aswell, like this in grub.conf:
kernel /xen.gz com1=38400,8n1,0xcf00,0 console=com1
Where 0xcf00 is the IO port for the PCI serial port (you can check it by running lspci -vvv in Linux),
and ",0" is the IRQ, which can usually be left to 0.
-- Pasi
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