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<div class="moz-cite-prefix">On 03/28/2014 05:37 PM, Dave
Christianson wrote:<br>
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<div>I've come across individual posts from people who
supposedly have done this in CentOS6.5. Basically, all
that is shown in the posts is the XML file generated, no
mention of *how* that file is generated. Virt-manager has
no provision for attaching directly to the gluster volume
except as a mount. Neither virt-manager nor virt-install
recognize the gluster:// type.<br>
<br>
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Supposedly earlier versions of RHEL used qemu-kvm as a
wrapper for qemu-system-x86_64, however in 6.5 qemu-kvm is
its own binary. Qemu-kvm also doesn't recognize the
gluster:// type.<br>
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Debian and Ubuntu supposedly have the newer versions of
gluster and qemu/libvirt availabe (ppa's?). Maybe I'll test
Wheezy...<br>
<br>
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Red Hat seems content to do their own thing. Although the
verisons of libvirt and qemu are older, libgfapi is supposed to
have been backported. It's a shame that full functionality is
not included. It's mindboggling seeing that Red Hat owns
glusterfs, you would think full support for the backend would
have been included in their product. If it is, as you say, that
RH includes this functionality only to RHN subscribers and is
not made available downstream to CentOS/SL, and unless I can
find a repository with the latest full versions of qemu &
libvirt, then CentOS simply will not work.<br>
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<br>
I am pretty sure there would be some technical reason behind not
having all support for libgfapi. May be somebody who has more
knowledge about specifics should give some more context. <br>
<br>
Regarding making functionality only to RHN subscribers and is not
made available downstream to CentOS/SL, <br>
<ul>
<li>It might not be related to source availability as libvirt is
available under LGPL [2] , so nothing can be changed here about
availability of source.<br>
</li>
<li>CentOS is built upon a particular version of RHEL which does
not have the relevant package (which already been mentioned) [1]
</li>
</ul>
<br>
To address these issues CentOS community is now working on special
interest groups, where new and relevant packages can be provided
which is is not present as part of core CentOS. Which is the exactly
the case here. In the same line CentOS Storage SIG [3] was proposed
and already approved by CentOS board. <br>
<br>
CentOS Storage SIG will provide all relevant packages for GlusterFS.
The packages can have required upstream patches, so that community
will not face an issue like this. The initiative has just started
and we are working on it. Hopefully CentOS Storage SIG will solve a
lot of problems like this and provide a easy way to deploy
GlusterFS.<br>
<br>
[1]
<a class="moz-txt-link-freetext" href="http://wiki.centos.org/FAQ/General#head-d22edba1476618760e12d5d9529f354d2d46953a">http://wiki.centos.org/FAQ/General#head-d22edba1476618760e12d5d9529f354d2d46953a</a><br>
[2] <a class="moz-txt-link-freetext" href="http://opensource.org/licenses/lgpl-license.html">http://opensource.org/licenses/lgpl-license.html</a><br>
[3] <a class="moz-txt-link-freetext" href="http://wiki.centos.org/SpecialInterestGroup/Storage/Proposal">http://wiki.centos.org/SpecialInterestGroup/Storage/Proposal</a><br>
<br>
Thanks,<br>
Lala<br>
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<div class="gmail_quote">On Fri, Mar 28, 2014 at 3:13
AM, Harshavardhana <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:harsha@harshavardhana.net"
target="_blank">harsha@harshavardhana.net</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Virt-manager
/ libvirt is yet to expose perhaps this
functionality -<br>
but as far as i remember libvirt should be doing
this as a<br>
pass-through for the URL's which have been passed
as<br>
"<schema>://<server>/<volname>"<br>
<br>
Does libvirt 'invoke' fuse when passed
"gluster://" schema?<br>
<br>
On Thu, Mar 27, 2014 at 5:34 PM, Dave Christianson<br>
<<a moz-do-not-send="true"
href="mailto:davidchristianson3@gmail.com">davidchristianson3@gmail.com</a>>
wrote:<br>
> Good Evening,<br>
><br>
> I have read that libgfapi has been backported
to qemu-kvm in RHEL 6.5 (and<br>
> by virtue CentOS and SL). However I am unable
to figure out how to actually<br>
> make it work as described. Virt-manager still
only seems to support<br>
> glusterfs volumes via fuse.<br>
><br>
> I can use qemu-img to create a disk image on
gluster://<server>/<Volume>.<br>
> But virt-manager can only use it from a fuse
mounted fileshare. There seems<br>
> to be no ability to attach in virt-manager
directly to the image on<br>
> glusterfs using libgfapi.<br>
><br>
> All documents I've found describe the use of
the command<br>
> "qemu-system-x86_64," however that command
does not exist in CentOS 6.5.<br>
> That appears to be the only way to start the
domain using libgfapi. So<br>
> basically, I can create an image via libgfapi
but cannot do anything useful<br>
> with it.<br>
><br>
> Should I be able to do this? If so, what's
the procedure? Or is CentOS/RHEL<br>
> 6.5 just not fully integrated? I really want
to be able to use libgfapi and<br>
> avoid the performance penalty of fuse. Should
I just grab & compile the<br>
> latest verisons of libvirt and qemu-kvm?<br>
><br>
>
_______________________________________________<br>
> Gluster-users mailing list<br>
> <a moz-do-not-send="true"
href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br>
> <a moz-do-not-send="true"
href="http://supercolony.gluster.org/mailman/listinfo/gluster-users"
target="_blank">http://supercolony.gluster.org/mailman/listinfo/gluster-users</a><br>
<span class="HOEnZb"><font color="#888888"><br>
<br>
<br>
--<br>
Religious confuse piety with mere ritual, the
virtuous confuse<br>
regulation with outcomes<br>
</font></span></blockquote>
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