Operating System - Red Hat ENTERPRISE LINUX 5 - VIRTUALIZATION GUIDE Manual

Chapter 35. Troubleshooting the Xen para-virtualized drivers
Note
The logfile is overwritten every time you start virt-manager. If you are troubleshooting
a problem with virt-manager make sure you save the logfile before you restart virt-
manager after an error has occurred.
Red Hat Enterprise Linux 5 Virtualization related directories
There are a few other directories and files which may be of interest when troubleshooting a Red Hat
Enterprise Linux 5 Virtualization environment:
/var/lib/libvirt/images/
the standard directory for file-based guest images.
/var/lib/xen/xend-db/
directory that hold the xend database which is generated every time the daemon is restarted.
/etc/xen/
Stores a number of configuration files for the Xen hypervisor.
• /etc/xen/xend-config.sxp is the main configuration for the xend daemon. The xend-
config.sxp file enables or disables migration and other features not configured by libvirt.
Use the libvirt tools for all other features.
/var/xen/dump/
Holds dumps generate by virtual machines or when using the xm dump-core command.
/proc/xen/
Stores xen-kernel information in the following files:
• /proc/xen/capabilities
• /proc/xen/privcmd
• /proc/xen/balloon
• /proc/xen/xenbus
• /proc/xen/xsd_port
• /proc/xen/xsd_kva
35.2. Para-virtualized guest fail to load on a Red Hat
Enterprise Linux 3 guest operating system
Red Hat Enterprise Linux 3 is uses processor architecture specific kernel RPMs and because of this
the para-virtualized drivers may fail to load if the para-virtualized driver RPM does not match the
installed kernel architecture.
When the para-virtualized driver modules are inserted, a long list of unresolved modules will be
displayed. A shortened excerpt of the error can be seen below.
# insmod xen-platform-pci.o
370