host information in domU over /proc or /sys filesystem

[Hannes Kuehnemund <hannes.kuehnemund@sap.com>]

Hi,

I have a few questions. But lets start with the background:

Several other virtualization technologies beside Xen do provide the 
possibility to get configuration information of the VM itself and the 
host it is running on through the /proc file system. These technologies 
are for example zLinux or Linux on ppc64.

This feature is very important for quality of service aspects. How many 
physical CPU do I have? How many CPU time can I use? Other important 
information would the real memory and the hostname of the host machine. 
Basically all this information is provided by other virtualization 
technologies as read only values. Having a huge hosting solution with 
enterprise software running in virtual machines depends on these quality 
of service aspects. Having a black box makes debugging of performance 
issues impossible and thus the whole solution is not usable.

Is it possible to provide such a solution with Xen (of course only if 
enabled in dom0 due to security reasons!) over the /proc or /sysfs?

Thanks,
Hannes

-- 

* Hannes Kuehnemund
* SAP Linuxlab
* SAP AG
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mailto: hannes.kuehnemund@sap.com
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