Belkin XM Commander Bedienungsanleitung PDF herunterladen (Seite 53)

Appendix B

Installing Xen / XenLinux on

Redhat or Fedora Core

When using Xen / XenLinux on a standard Linux distribution there are a couple of

things to watch out for:

Note that, because domains¿0 don’t have any privileged access at all, certain com-

mands in the default boot sequence will fail e.g. attempts to update the hwclock,

change the console font, update the keytable map, start apmd (power management),

or gpm (mouse cursor). Either ignore the errors (they should be harmless), or re-

move them from the startup scripts. Deleting the following links are a good start:

S24pcmcia, S09isdn, S17keytable, S26apmd, S85gpm.

If you want to use a single root ﬁle system that works cleanly for both domain 0 and

unprivileged domains, a useful trick is to use different ’init’ run levels. For example,

use run level 3 for domain 0, and run level 4 for other domains. This enables different

startup scripts to be run in depending on the run level number passed on the kernel

command line.

If using NFS root ﬁles systems mounted either from an external server or from do-

main0 there are a couple of other gotchas. The default /etc/sysconfig/iptables

rules block NFS, so part way through the boot sequence things will suddenly go dead.

If you’re planning on having a separate NFS /usr partition, the RH9 boot scripts

don’t make life easy - they attempt to mount NFS ﬁle systems way to late in the boot

process. The easiest way I found to do this was to have a /linuxrc script run ahead

of /sbin/init that mounts /usr:

#!/bin/bash

/sbin/ipconfig lo 127.0.0.1

/sbin/portmap

/bin/mount /usr

exec /sbin/init "$@" <>/dev/console 2>&1

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Belkin XM Commander Bedienungsanleitung Seite 53