[Gluster-devel] question on glusterfs kvm performance

Yin Yin maillistofyinyin at gmail.com
Wed Aug 15 06:44:21 UTC 2012

Hi,Bharata B Rao:
       I have try your patch, but has some problem. I found that both
glusterfs and qemu have a fun uuid_is_null.
glusterfs use contrib/uuid/isnull.c
qemu use block/vdi.c

I test the api/example, the glfsxmp.c call uuid_is_null in
but qemu/block/gluster.c finally call the uuid_is_null in vdi.c which cause
vm can't boot.

I was wonder why this happen?

Best Regards,

On Fri, Aug 10, 2012 at 9:56 AM, Bharata B Rao <bharata.rao at gmail.com>wrote:

> On Fri, Aug 10, 2012 at 7:05 AM, Yin Yin <maillistofyinyin at gmail.com>
> wrote:
> > Bharata B Rao :
> >       Thanks!! This is what I wanted!
> >       I'll try your patch and make some test.
> >       BTW: why gluster-qemu integration had so high performance than fuse
> > mount?
> With no FUSE overhead, IO path becomes simpler with no back and forth
> transition to kernel.
> Regards,
> Bharata.
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