[Gluster-devel] question on glusterfs kvm performance

Joe Julian joe at julianfamily.org
Wed Aug 8 17:10:06 UTC 2012

On 08/07/2012 08:04 PM, Yin Yin wrote:
>      I use glusterfs3.3.0 as KVM storage, but I have found the 
> performance in vm is poor.
>      I have the same problem as the below bug: 
> https://bugzilla.redhat.com/show_bug.cgi?id=842254
>       the I/O performance is < 1% of my hardwares capability. 
> Hopefully work on buffering and other tuning will fix this ? Or maybe 
> the work mentioned getting qemu talking directly to gluster will fix this?
I replied with my phone, but didn't notice that I replied directly. For 
the benefit of others:

Or change your perspective. Do you NEED to write to the VM image?

I write to fuse mounted GlusterFS volumes from within my VMs. The VM 
image is just for the OS and application. With the data on a GlusterFS 
volume, I get the normal fuse client performance from within my VM.

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