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xen-users
Re: [Xen-users] Running OS instances within domU or on physical device
Nyers, Gabor wrote:
> [...]
> Is there any interesting application of this? (For one, I can imagine a case,
> when a non
> 24x7 VM gets started on a physical machine in order to cope with
> periodic heavy loads)
> [...]
Hmm, I see not much useful application in this.
For this type of load balancing, you would rather let the domU run alone
on a single host, and migrate other away to less used servers.
Having to reboot every time the load gets higher seems a bit odd for
real production.
So, this experiment might be an interesting result, but I see not
practical use.
On the other hand, it's not even such a wonder that this works: if you
installed a normal kernel to boot from, there is not much difference
between a "normal" system and a (PV - HVM is even less different, if at
all)domU - the only thing different is that you have a xen kernel, and
you often disbale all but one serial console - nothing special that
keeps you from using the system directly on the hardware instead with a
hypervisor in between.
Maybe it's interesting and usable for desktop/laptop users - I don't know?
Henning
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