[CentOS] KVM Host Disk Performance

Sun Apr 3 18:06:26 UTC 2011
compdoc <compdoc at hotrodpc.com>

> I'm having quite an interesting time getting up to speed with KVM/QEMU
>and the various ways of creating virtual Guest VMs.  But disk I/O
>performance remains a bit of a question mark for me.  I'm looking for
>suggestions and opinions ....

It's possible to set up guests to use a block device that will get you the
same disk I/O as the underlying storage.

Is that what you're seeing? What speed does the host see when benchmarking
the RAID volumes, and what speeds do the guests see?