35.3. Log file descriptions
			Xen features the 
xend daemon and qemu-dm  process, two utilities that write the multiple log files to the /var/log/xen/ directory:
		- xend.logis the log file that contains all the data collected by the- xenddaemon, whether it is a normal system event, or an operator initiated action. All virtual machine operations (such as create, shutdown, destroy and so on) appear in this log. The- xend.logis usually the first place to look when you track down event or performance problems. It contains detailed entries and conditions of the error messages.
- xend-debug.logis the log file that contains records of event errors from- xendand the Virtualization subsystems (such as framebuffer, Python scripts, and so on).
- xen-hotplug-logis the log file that contains data from hotplug events. If a device or a network script does not come online, the event appears here.
- qemu-dm.[PID].logis the log file created by the- qemu-dmprocess for each fully virtualized guest. When using this log file, you must retrieve the given- qemu-dmprocess PID, by using the- pscommand to examine process arguments to isolate the- qemu-dmprocess on the virtual machine. Note that you must replace the [PID] symbol with the actual PID- qemu-dmprocess.
			If you encounter any errors with the Virtual Machine Manager, you can review the generated data in the 
virt-manager.log file that resides in the /.virt-manager  directory. Note that every time you start the Virtual Machine Manager, it overwrites the existing log file contents. Make sure to backup the  virt-manager.log  file, before you restart the Virtual Machine manager after a system error.