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Re: [LUG] xen virtulisation

 

On 06/11/06 21:12:11, John Horne wrote:
> On Sat, 2006-11-04 at 09:30 +0000, stinga@xxxxxxxxxxxxx wrote:
> >
> > I have found the term I need to search for which is p2v (private to
> 
> > virtual I guess)
> >
> Well done, you found p2v before I could mention it.
> 'physical-to-virtual' - i.e. take a physical system already set up  
> and
> convert it to a virtual one. We are considering this for some of our
> servers at work (under vmware though :-( ).
>

Does not work for us... :-(

You have to use a 'xenised' kernel unless you have a cpu that supports  
full virtulization..

To summarize what I know so far...

qemu:
Does not support the host pci bus, it emulates the obvious ones, so  
useless if you want to support some wacky pci card

xen:
Can run in para or full virtual mode supports the host pci bus
para...
need a kernel that has been compiled with xen
full...
can run any kernel, but needs a particular cpu even then the bios might  
not support the functionality.
Probably the cpu is hideously expensive, on the 40 machines I checked,  
none of the would support full virtulization.

vmware:
Have not gone then yet, seems it will support any kernel without a  
recompile, but does it support the host pci bus.

So all in all virtulization is not the as good as it seems, has its  
uses I suppose but you need to be careful what you want to do with it.

We are trying to support an EOL card that is currently on a 2.2 kernel.

I am now installing fc5 and down grading the kernel, without much  
sucess I might add.

-- 
'ooroo

stinga...(:)-)
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