Re: [Xen-users] How to create an img.

["Todd Deshane" <deshantm@xxxxxxxxx>]

> While we're on this subject, I could use an opinion about something. I'd
> like to use a xen machine as a production database. The plan would be to run
> only one guest and give it most of the system resources. I read that disk
> partitions give better performance than files, which makes sense, but it
> also appears easier to clone and use files than partitions, and
> administration and maintainance time is certainly an issue. So the question
> is this: in this circumstance, with the entire machien dedicated to one
> guest, do you think that the performance difference is enough to warrant the
> use of a dedicated partition? How substantial is it?
>

This is actually a popular question:

http://xen.markmail.org/message/yjjjhl2qr4hjvdom?q=file+partition+performance#query:file%20partition%20performance+page:1+mid:cdhlcfyfzzjpey2y+state:results

http://xen.markmail.org/message/v6wus56oes3uwu5t?q=file+partition+performance#query:file%20partition%20performance+page:1+mid:y3tim7urxsfiwray+state:results

http://xen.markmail.org/message/kgr4v4iitkaszlh4?q=file+partition+performance&page=2#query:file%20partition%20performance+page:2+mid:hrr66tw37ifleznc+state:results

Some basics to keep in mind.
Best thing to do if you are worried about it run some benchmarks
(iozone is a good one).
Keep in mind the workload that you want to run
With a network storage server, or even file server, you can get the
best of both (but then you move a potential bottleneck to the network)
You should test as much as you can and ask for help/opinions if you
get strange results.

Hope that helps.

Cheers,
Todd

P.S. you said you are new to Xen, do you have the Running Xen book?

-- 
Todd Deshane
http://todddeshane.net
http://runningxen.com

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