Setting Up A 32-Bit Domain 0 On A 64-Bit Hypervisor - Novell XEN - ADMINISTRATION Manual

• Change the default boot to the Xen label, then click Set as Default.
• Click Finish.
• Disable powersave functionality on the host and all guest operating systems. On
the host computer and other Linux computers, you can use the chkconfig
powersaved off command.
• Close Virtual Machine Manager if you are not actively using it and restart it when
needed. Closing Virtual Machine Manager does not affect the state of virtual ma-
chines.
• For best performance, only the applications and processes required for virtualization
should be installed on the virtual machine host.
• When using both, iSCSI and OCFS2 to host Xen images, the latency required for
OCFS2 default timeouts in SP2 may not be met. To reconfigure this timeout, run
/etc/init.d/o2cb configure or edit O2CB_HEARTBEAT_THRESHOLD
in the system configuration.
2.2 Setting Up a 32-Bit Domain 0 on
a 64-Bit Hypervisor
A virtual machine host running on a 64-bit platform can access much more memory
than hosts running on a 32-bit platform. However, there might be circumstances where
you want to run the 32-bit version of the SUSE® Linux operating system (as domain
0) on the 64-bit Xen hypervisor.
1 On 64-bit hardware, start the 32-bit SUSE Linux operating system installation
program.
2 Select Installation Settings > Software to include the Xen Virtual Machine
Host Server software package selection.
3 Select Software > Software Selection and System Tasks and click Details to
view all packages.
Setting Up a Virtual Machine Host 9