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Re: [Xen-users] Xen Partition Performance


So I will use LVM for the data. Does any one have any numbers for the
performance of Xen with some of the choices (since I need to present my

Thanks for your help.


On Tue, 25 Apr 2006, Mark Williamson wrote:

> > I have a question who may be complet your question ...  What is the best
> > File Back-End VBD for more stability and performance ?   If i use SAN to
> > stock data, Nfs, Gfs ??
> You mean what's the best way to store domU FSes in file-backed VBDs?
> Best if you don't put File VBDs onto NFS.  Both NFS and the loopback block 
> driver use a load of RAM, and they tend to OOM when used together.  Also, the 
> performance will probably be bad.
> SANs are nice ;-)  There have been threads on using GFS to store guest disk 
> files recently.  Has the advantage of making live-migration easier.
> Better performing might be to run CLVM on the SAN so that all dom0's can see 
> logical volumes stored there, then use logical volumes directly.  Lower 
> overhead than using the filesystem layer.
> I've not tried this, so it's speculation on my part ;-)
> Cheers,
> Mark
> -- 
> Dave: Just a question. What use is a unicyle with no seat?  And no pedals!
> Mark: To answer a question with a question: What use is a skateboard?
> Dave: Skateboards have wheels.
> Mark: My wheel has a wheel!

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