[CentOS-virt] Libvirt enhancement requests

Jean-Marc LIGER jean-marc.liger at parisdescartes.fr
Mon Nov 2 23:49:26 UTC 2015


Le 02/11/2015 18:28, Johnny Hughes a écrit :
> On 10/31/2015 04:34 PM, Jean-Marc LIGER wrote:
>> Hi Lucian,
>>
>> It seems to be upstream libvirt-1.2.15-2 with options with_xen and
>> with_libxl enabled.
>> http://cbs.centos.org/koji/buildinfo?buildID=1348
>>
> Right, and we can use that version, or a newer one and enable rbd as well.

You might use this preview one :
http://people.redhat.com/~rjones/libguestfs-RHEL-7.2-preview/libvirt-1.2.17-3.el7.src.rpm

I personally rebuild libvirt from last official releases which enable 
ceph by default for el7 :
http://libvirt.org/sources/

My dogfooding tests still **can be found here :
https://copr.fedoraproject.org/coprs/jmliger/virt7-upstream/

> The next question is, is there a difference between the generic rbd and
> building against ceph-devel.  (As in, is one ceph only and the other
> generic only or can you use both when built against ceph-devel, etc)
>
> Since qemu-kvm-ev enables ceph, if we can also enable ceph in libvirt,
> seems like a win to me, if it also does rbd the same as building against
> librados2-devel and librbd1-devel.

Maybe I'm wrong but ceph-devel seems to have been replaced by librados2-devel and librbd1-devel in el7.

> These may only work with CentOS 7 as well .. have to look at if those
> build in CentOS 6.7.

Which ceph release forCentOS 6.7Hammer or Firefly ?
Jean-Marc Liger

> Thoughts?
>
> Thanks,
> Johnny Hughes
>
>
>> Regards,
>> Jean-Marc
>>
>> Le 28/10/2015 09:38, Nux! a écrit :
>>> Pasi,
>>>
>>> Where are these RPMs, how are they built, what exactly are the
>>> differences vs the stock ones?
>>>
>>> Regards,
>>> Lucian
>>>
>>> -- 
>>> Sent from the Delta quadrant using Borg technology!
>>>
>>> Nux!
>>> www.nux.ro
>>>
>>> ----- Original Message -----
>>>> From: "Pasi Kärkkäinen"<pasik at iki.fi>
>>>> To: "Discussion about the virtualization on CentOS"
>>>> <centos-virt at centos.org>
>>>> Sent: Wednesday, 28 October, 2015 08:36:18
>>>> Subject: Re: [CentOS-virt] Libvirt enhancement requests
>>>> On Tue, Oct 27, 2015 at 05:19:16PM +0000, Nux! wrote:
>>>>> To clarify my own request:
>>>>>
>>>>> RBD (for CEPH) support is available in the version bundled in RHEL
>>>>> 7.2 Beta, so
>>>>> we'll have it in CentOS 7.2 (or whatever will be the identifying
>>>>> number).
>>>>>
>>>>> The hooks seems just like a matter of creating files in the correct
>>>>> location.
>>>>>
>>>>> ..So, all is good in the world once again.
>>>>>
>>>> Except the VirtSIG provides a different version/build of libvirt
>>>> rpms, so we
>>>> still need to enable RBD/Ceph support separately in VirtSIG provided
>>>> version..
>>>>
>>>>
>>>> -- Pasi
>>>>
>>>>> Regards,
>>>>> Lucian
>>>>>
>>>>> -- 
>>>>> Sent from the Delta quadrant using Borg technology!
>>>>>
>>>>> Nux!
>>>>> www.nux.ro
>>>>>
>>>>> ----- Original Message -----
>>>>>> From: "Nux!"<nux at li.nux.ro>
>>>>>> To: "Discussion about the virtualization on CentOS"
>>>>>> <centos-virt at centos.org>
>>>>>> Sent: Tuesday, 27 October, 2015 15:22:27
>>>>>> Subject: Re: [CentOS-virt] Libvirt enhancement requests
>>>>>> So... how exactly do we proceed?
>>>>>>
>>>>>> Anyone from the Virt SIG, please stand up?
>>>>>>
>>>>>> -- 
>>>>>> Sent from the Delta quadrant using Borg technology!
>>>>>>
>>>>>> Nux!
>>>>>> www.nux.ro
>>>>>>
>>>>>> ----- Original Message -----
>>>>>>> From: "Pasi Kärkkäinen"<pasik at iki.fi>
>>>>>>> To: "Discussion about the virtualization on CentOS"
>>>>>>> <centos-virt at centos.org>
>>>>>>> Sent: Sunday, 25 October, 2015 11:02:22
>>>>>>> Subject: Re: [CentOS-virt] Libvirt enhancement requests
>>>>>>> On Wed, Oct 21, 2015 at 05:44:20PM +0100, Nux! wrote:
>>>>>>>> Hi folks,
>>>>>>>>
>>>>>>> Hi,
>>>>>>>
>>>>>>>> I know you're rebuilding livbirt for the SIG. Would it be
>>>>>>>> possible to enable RBD
>>>>>>>> support in it?
>>>>>>>>
>>>>>>> Yes, we should definitely enable RBD / Ceph support in libvirt!
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>> I know quite a few cases (in the Cloudstack community) that
>>>>>>>> switched to Ubuntu
>>>>>>>> particularly because CEPH support was missing.
>>>>>>>> The recommendation is to rebuild the rpms, but this is not a
>>>>>>>> viable thing for
>>>>>>>> everyone. E.g.
>>>>>>>> http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-storage-pool-support/
>>>>>>>>
>>>>>>>>
>>>>>>>> Another thing that I noticed on the CentOS ml recently is an
>>>>>>>> alleged lack of
>>>>>>>> hooks,https://www.libvirt.org/hooks.html
>>>>>>>>
>>>>>>>> And last but not least, where could I find the libvirt (s)rpms
>>>>>>>> that the SIG
>>>>>>>> produces?
>>>>>>>>
>>>>>>>> Lucian
>>>>>>>>
>>>>>>> -- Pasi
>
>
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