Installation guide

The example below is a typical a para-virtualized guest configuration file:
name = "rhel5vm01"
memory = "2048"
disk = ['tap:aio:/var/lib/libvirt/images/rhel5vm01.dsk,xvda,w',]
vif = ["type=ieomu, mac=00:16:3e:09:f0:12 bridge=xenbr0',
"type=ieomu, mac=00:16:3e:09:f0:13 ]
vnc = 1
vncunused = 1
uuid = "302bd9ce-4f60-fc67-9e40-7a77d9b4e1ed"
bootloader = "/usr/bin/pygrub"
vcpus=2
on_reboot = "restart"
on_crash = "restart"
Note that the serial="pty" is the default for the configuration file. This configuration file example
is for a fully-virtualized guest:
name = "rhel5u5-86_64"
builder = "hvm"
memory = 500
disk = ['/var/lib/libvirt/images/rhel5u5-x86_64.dsk.hda,w']
vif = [ 'type=ioemu, mac=00:16:3e:09:f0:12, bridge=xenbr0', 'type=ieomu,
mac=00:16:3e:09:f0:13, bridge=xenbr1']
uuid = "b10372f9-91d7-ao5f-12ff-372100c99af5'
device_model = "/usr/lib64/xen/bin/qemu-dm"
kernel = "/usr/lib/xen/boot/hvmloader/"
vnc = 1
vncunused = 1
apic = 1
acpi = 1
pae = 1
vcpus =1
serial ="pty" # enable serial console
on_boot = 'restart'
Note
Editing Xen configuration files is unsupported. Use virsh dumpxml and virsh create (or
virsh edit) to edit the libvirt configuration files (xml based) which have error checking
and safety checks.
35.13. Int erpret ing Xen error messages
You receive the following error:
failed domain creation due to memory shortage, unable to balloon domain0
A domain can fail if there is not enough RAM available. Domain0 does not balloon down enough to
provide space for the newly created guest. You can check the xend.log file for this error:
[2006-12-21] 20:33:31 xend 3198] DEBUG (balloon:133) Balloon: 558432 Kib free; 0 to
scrub; need 1048576; retries: 20
[2006-12-21] 20:33:31 xend. XendDomainInfo 3198] ERROR (XendDomainInfo: 202
Domain construction failed
⁠Chapt er 35. T roub leshoo t ing Xen
339