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Re: Xen Dom0 vs. DomU disk I/O

Am Donnerstag, 22. November 2012, 12:27:49 schrieben Sie:
> John,
> my disk line looks like this:
> disk = [ 'file:/opt/xen/vm00.img,0x1,w' ,
> 'file:/opt/xen/NetBSD-6.0-amd64.iso,0x04,r' ]
> The disk image was created with qemu-img-xen and is assigned to a vnd
> device. I suspect that it is a sparse file.
this is (was i wrote) a file based emulated disk which is slow by principle. 
This is usually not useful in productive / high load environments. To get 
"full" storage troughput you should use something like:

 - plain / dedicated disks (hardware)
 - plain / real partitions
 - LVM volumes from Dom0

 or any "real" storage type.

instead of file based / emulated disks.

Change this and check again.

good luck and 

 Niels Dettenbach
 Syndicat IT & Internet

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