CEPH rbd support in EL7 libvirt
Hi folks, I was directed here by Sandro with the question in the $subject. As I could not find anything conclusive in either bugzilla or the 7.2 release notes, can someone clarify this for me? At this point it's apparently as easy as rebuilding the libvirt src.rpm with "with_storage_rbd 1".[1] I see users migrating from CentOS to Ubuntu because this is missing, it's not even in technology preview. Kind of odd RH undermining their own projects in this way. [1] - http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-s... -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro
On Sun, Oct 11, 2015 at 12:52 PM, Nux! <nux@li.nux.ro> wrote:
Hi folks,
I was directed here by Sandro with the question in the $subject. As I could not find anything conclusive in either bugzilla or the 7.2 release notes, can someone clarify this for me? At this point it's apparently as easy as rebuilding the libvirt src.rpm with "with_storage_rbd 1".[1]
I see users migrating from CentOS to Ubuntu because this is missing, it's not even in technology preview. Kind of odd RH undermining their own projects in this way.
[1] - http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-s...
RHEL 7.1 supports rbd out of the box; so should be current CentOS 7. We do not use libvirt storage pool for ovirt, so I don't think you need to build anything. Also, we do not access rbd volumes via libvirt. When we run vms using rbd: volumes, libvirt pass the volume url to qemu, and qemu access the volume. So we may not need any rbd support in libvirt itself. Did you try to use ceph with ovirt 3.6 on CentOS? Nir
Hi Nir, I have not tried to use Ovirt with Ceph, my question was about libvirt and was directed to ask the question here, sorry for the noise; I understand libvirt is not really ovirt's people concern. The thing is qemu can do ceph rbd in EL7, libvirt does not, although support seems to be there and a simple rebuild enables it. Was hoping you guys know more. Lucian -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro ----- Original Message -----
From: "Nir Soffer" <nsoffer@redhat.com> To: "Nux!" <nux@li.nux.ro> Cc: "users" <users@ovirt.org> Sent: Monday, 12 October, 2015 09:05:00 Subject: Re: [ovirt-users] CEPH rbd support in EL7 libvirt
On Sun, Oct 11, 2015 at 12:52 PM, Nux! <nux@li.nux.ro> wrote:
Hi folks,
I was directed here by Sandro with the question in the $subject. As I could not find anything conclusive in either bugzilla or the 7.2 release notes, can someone clarify this for me? At this point it's apparently as easy as rebuilding the libvirt src.rpm with "with_storage_rbd 1".[1]
I see users migrating from CentOS to Ubuntu because this is missing, it's not even in technology preview. Kind of odd RH undermining their own projects in this way.
[1] - http://blog.widodh.nl/2015/04/rebuilding-libvirt-under-centos-7-1-with-rbd-s...
RHEL 7.1 supports rbd out of the box; so should be current CentOS 7.
We do not use libvirt storage pool for ovirt, so I don't think you need to build anything.
Also, we do not access rbd volumes via libvirt. When we run vms using rbd: volumes, libvirt pass the volume url to qemu, and qemu access the volume. So we may not need any rbd support in libvirt itself.
Did you try to use ceph with ovirt 3.6 on CentOS?
Nir
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 12/10/15 10:13, Nux! wrote:
Hi Nir,
I have not tried to use Ovirt with Ceph, my question was about libvirt and was directed to ask the question here, sorry for the noise; I understand libvirt is not really ovirt's people concern.
The thing is qemu can do ceph rbd in EL7, libvirt does not, although support seems to be there and a simple rebuild enables it. Was hoping you guys know more.
Lucian
I'd suggest to ask this on the virt-sig of centOS (cc'ed). Why is there no rbd support in el7 libvirt? I don't know, maybe the virt repo guys from centos can rebuild it (they already do rebuild libvirt afaik, another flag might not hurt them ). HTH - -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH & Co. KG Königsberger Straße 6 32339 Espelkamp T: +495772 293100 F: +495772 293333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhaus en Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJWG6/UAAoJEMby9TMDAbQRCOkP/1aCsCIUvJSdCdsdAi/A/46H EZHFLq9vak/NOWI9WQ4hVEh9zgXgCwoMz1vEMDceFXT1QXqGz+zlwODH55RS73FP LZcEWFFDwmVljG2MWnlYIp0F25vO/LtpvkQv+gtq/2MHtJwEG5TKY0jWdKCkrMJK Hip3qgm36hghYE2U1HQ1wMOAj6m5xedtIker4uIDcLcC7fqEx7Kw5zbPF/Rna6en eFZMiOaMtThEGUWi2EqbnbObJlvWkr0vduG3Knzsnht4luromYrc7/5qmLt7zYkN 6KIASpCZ7gwsUTblGBlF1qfp3mHy1rzZlh163Lktyw1+bzmJHa62kF61JJ8ZFysJ uzp9UMqnl1DaGKh3Y8zwZL/z25hPFNaB4GkY3VOxCVPNuDtTNrbNH43ahaVQ4Urw zpQxoi37pU+MPTlC7QiIQaI6eNEpFaWeZwcr+OoEwZNs2FOJ4TYzTL7FGisNF1MP KEZN/vQipq8pk367bCS1y70fVlzeSfjns49PkbN/zaemRmv5Q8RtwL03V5b6o4on cSzJLg3SfXBkiPXvlemjm7W7kym74GILB+s/R4LebNiYzpZyRtcDHVjYIQcA6SWM E5vmwMLr6KGJxmF4Cw9qoQRNldXkMshZeIGgHAHaf47e5N4X3cGn8zgjtcLGbyhu TX/OrFrnROA40g441hFX =pyBp -----END PGP SIGNATURE-----
hi is ovirt useable with xen? is there any doc/howto how to use it? Am 2015-10-12 15:04, schrieb Sven Kieske:
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On 12/10/15 10:13, Nux! wrote:
Hi Nir,
I have not tried to use Ovirt with Ceph, my question was about libvirt and was directed to ask the question here, sorry for the noise; I understand libvirt is not really ovirt's people concern.
The thing is qemu can do ceph rbd in EL7, libvirt does not, although support seems to be there and a simple rebuild enables it. Was hoping you guys know more.
Lucian
I'd suggest to ask this on the virt-sig of centOS (cc'ed).
Why is there no rbd support in el7 libvirt? I don't know, maybe the virt repo guys from centos can rebuild it (they already do rebuild libvirt afaik, another flag might not hurt them ).
HTH
- -- Mit freundlichen Grüßen / Regards
Sven Kieske
-- --------- Greetz
On Tue, Oct 13, 2015 at 9:02 AM, Christoph <mangel@gmx.de> wrote:
hi
is ovirt useable with xen? is there any doc/howto how to use it?
There have been experiments in such direction, you can find more info here: http://www.ovirt.org/Xen
Am 2015-10-12 15:04, schrieb Sven Kieske:
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
On 12/10/15 10:13, Nux! wrote:
Hi Nir,
I have not tried to use Ovirt with Ceph, my question was about libvirt and was directed to ask the question here, sorry for the noise; I understand libvirt is not really ovirt's people concern.
The thing is qemu can do ceph rbd in EL7, libvirt does not, although support seems to be there and a simple rebuild enables it. Was hoping you guys know more.
Lucian
I'd suggest to ask this on the virt-sig of centOS (cc'ed).
Why is there no rbd support in el7 libvirt? I don't know, maybe the virt repo guys from centos can rebuild it (they already do rebuild libvirt afaik, another flag might not hurt them ).
HTH
- -- Mit freundlichen Grüßen / Regards
Sven Kieske
-- --------- Greetz
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participants (5)
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Christoph -
Nir Soffer -
Nux! -
Sandro Bonazzola -
Sven Kieske