Gluster users - Mar 2014 - Possible to use libgfapi with libvirt in CentOS 6.5?

Good Evening,

I have read that libgfapi has been backported to qemu-kvm in RHEL 6.5 (and
by virtue CentOS and SL). However I am unable to figure out how to actually
make it work as described. Virt-manager still only seems to support
glusterfs volumes via fuse.

I can use qemu-img to create a disk image on
gluster://<server>/<Volume>.
But virt-manager can only use it from a fuse mounted fileshare. There seems
to be no ability to attach in virt-manager directly to the image on
glusterfs using libgfapi.

All documents I've found describe the use of the command
"qemu-system-x86_64," however that command does not exist in CentOS
6.5.
That appears to be the only way to start the domain using libgfapi. So
basically, I can create an image via libgfapi but cannot do anything useful
with it.

Should I be able to do this? If so, what's the procedure? Or is CentOS/RHEL
6.5 just not fully integrated? I really want to be able to use libgfapi and
avoid the performance penalty of fuse. Should I just grab & compile the
latest verisons of libvirt and qemu-kvm?
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://supercolony.gluster.org/pipermail/gluster-users/attachments/20140327/04b1adb4/attachment.html>

Hello, Dave.

Most of what you described is Chinese to me, but when you mentioned a
command "qemu-system-x86_64", well, this sounds a lot like Red
Hat's
internal suite of commands, which are only available to subscribers.

In practical terms it does not help solving your issue, but at least you
may feel a bit less frustrated in not finding it.

Hopefully someone will know what command replaces it, or how to get to your
objective, here in the list.

KR,

Carlos.


On Fri, Mar 28, 2014 at 1:34 AM, Dave Christianson <
davidchristianson3 at gmail.com> wrote:
> Good Evening,
>
> I have read that libgfapi has been backported to qemu-kvm in RHEL 6.5 (and
> by virtue CentOS and SL). However I am unable to figure out how to actually
> make it work as described. Virt-manager still only seems to support
> glusterfs volumes via fuse.
>
> I can use qemu-img to create a disk image on
gluster://<server>/<Volume>.
> But virt-manager can only use it from a fuse mounted fileshare. There seems
> to be no ability to attach in virt-manager directly to the image on
> glusterfs using libgfapi.
>
> All documents I've found describe the use of the command
> "qemu-system-x86_64," however that command does not exist in
CentOS 6.5.
> That appears to be the only way to start the domain using libgfapi. So
> basically, I can create an image via libgfapi but cannot do anything useful
> with it.
>
> Should I be able to do this? If so, what's the procedure? Or is
> CentOS/RHEL 6.5 just not fully integrated? I really want to be able to use
> libgfapi and avoid the performance penalty of fuse. Should I just grab
&
> compile the latest verisons of libvirt and qemu-kvm?
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://supercolony.gluster.org/mailman/listinfo/gluster-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL:
<http://supercolony.gluster.org/pipermail/gluster-users/attachments/20140328/8cc1f244/attachment.html>

Virt-manager / libvirt is yet to expose perhaps this functionality -
but as far as i remember libvirt should be doing this as a
pass-through for the URL's which have been passed  as
"<schema>://<server>/<volname>"

Does libvirt 'invoke' fuse when passed "gluster://" schema?

On Thu, Mar 27, 2014 at 5:34 PM, Dave Christianson
<davidchristianson3 at gmail.com> wrote:
> Good Evening,
>
> I have read that libgfapi has been backported to qemu-kvm in RHEL 6.5 (and
> by virtue CentOS and SL). However I am unable to figure out how to actually
> make it work as described. Virt-manager still only seems to support
> glusterfs volumes via fuse.
>
> I can use qemu-img to create a disk image on
gluster://<server>/<Volume>.
> But virt-manager can only use it from a fuse mounted fileshare. There seems
> to be no ability to attach in virt-manager directly to the image on
> glusterfs using libgfapi.
>
> All documents I've found describe the use of the command
> "qemu-system-x86_64," however that command does not exist in
CentOS 6.5.
> That appears to be the only way to start the domain using libgfapi. So
> basically, I can create an image via libgfapi but cannot do anything useful
> with it.
>
> Should I be able to do this? If so, what's the procedure? Or is
CentOS/RHEL
> 6.5 just not fully integrated? I really want to be able to use libgfapi and
> avoid the performance penalty of fuse. Should I just grab & compile the
> latest verisons of libvirt and qemu-kvm?
>
> _______________________________________________
> Gluster-users mailing list
> Gluster-users at gluster.org
> http://supercolony.gluster.org/mailman/listinfo/gluster-users


-- 
Religious confuse piety with mere ritual, the virtuous confuse
regulation with outcomes