On Mon, Dec 12, 2016 at 1:49 PM, Sandro Bonazzola <sbonazzo@redhat.com> wrote:
Hi,
as you probably noticed, CentOS 7.3 is rolling out right now and will be announced pretty soon.
Please note that due to new libvirt shipped within CentOS 7.3, it is required to update qemu-kvm-ev to 2.6 at the same time.

If you're using CentOS Virt SIG rpms / repos for oVirt this should happen automatically. 
If you're using only ovirt repositories be sure to have qemu-kvm-ev 2.6 if you update to CentOS 7.3.

In terms of ovirt repositories, qemu-kvm-ev 2.6 is available right now in ovirt-master-snapshot-static, ovirt-4.0-snapshot-static, and ovirt-4.0-pre (contains 4.0.6 RC4 rpms going to be announced in a few minutes.)

Thanks,
--
Sandro Bonazzola
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Hello,
I start again from the initial post.
There is still something that I miss on this.
I currently have a host in oVirt 4.0.5 and in CentOS 7.2 (last update run on mid November)
What are the steps I should run to keep current my oVirt host os now?

If I now run 

[root@ractor ~]# yum update
Loaded plugins: fastestmirror, langpacks
Repository virtio-win-stable is listed more than once in the configuration
Loading mirror speeds from cached hostfile
 * base: ba.mirror.garr.it
 * extras: artfiles.org
 * ovirt-3.6: ftp.nluug.nl
 * ovirt-3.6-epel: epel.besthosting.ua
 * ovirt-4.0: ftp.nluug.nl
 * ovirt-4.0-epel: epel.besthosting.ua
 * updates: ba.mirror.garr.it
Resolving Dependencies

and relevant updates proposed are

Installing:
 kernel                            x86_64   3.10.0-514.2.2.el7                updates                       37 M

. . .

Updating:

. . .

 centos-release                    x86_64   7-3.1611.el7.centos               base                          23 k

. . . 

 libvirt                           x86_64   2.0.0-10.el7_3.2                  updates                      138 k
 libvirt-client                    x86_64   2.0.0-10.el7_3.2                  updates                      4.3 M
 libvirt-daemon                    x86_64   2.0.0-10.el7_3.2                  updates                      720 k
 libvirt-daemon-config-network     x86_64   2.0.0-10.el7_3.2                  updates                      139 k
 libvirt-daemon-config-nwfilter    x86_64   2.0.0-10.el7_3.2                  updates                      141 k
 libvirt-daemon-driver-interface   x86_64   2.0.0-10.el7_3.2                  updates                      181 k
 libvirt-daemon-driver-lxc         x86_64   2.0.0-10.el7_3.2                  updates                      803 k
 libvirt-daemon-driver-network     x86_64   2.0.0-10.el7_3.2                  updates                      337 k
 libvirt-daemon-driver-nodedev     x86_64   2.0.0-10.el7_3.2                  updates                      181 k
 libvirt-daemon-driver-nwfilter    x86_64   2.0.0-10.el7_3.2                  updates                      205 k
 libvirt-daemon-driver-qemu        x86_64   2.0.0-10.el7_3.2                  updates                      615 k
 libvirt-daemon-driver-secret      x86_64   2.0.0-10.el7_3.2                  updates                      171 k
 libvirt-daemon-driver-storage     x86_64   2.0.0-10.el7_3.2                  updates                      375 k
 libvirt-daemon-kvm                x86_64   2.0.0-10.el7_3.2                  updates                      137 k
 libvirt-lock-sanlock              x86_64   2.0.0-10.el7_3.2                  updates                      186 k
 libvirt-python                    x86_64   2.0.0-2.el7                       base                         321 k

. . .

 vdsm                              x86_64   4.18.15.3-1.el7.centos            ovirt-4.0                    688 k
 vdsm-api                          noarch   4.18.15.3-1.el7.centos            ovirt-4.0                     53 k
 vdsm-cli                          noarch   4.18.15.3-1.el7.centos            ovirt-4.0                     67 k
 vdsm-hook-vmfex-dev               noarch   4.18.15.3-1.el7.centos            ovirt-4.0                    6.6 k
 vdsm-infra                        noarch   4.18.15.3-1.el7.centos            ovirt-4.0                     12 k
 vdsm-jsonrpc                      noarch   4.18.15.3-1.el7.centos            ovirt-4.0                     25 k
 vdsm-python                       noarch   4.18.15.3-1.el7.centos            ovirt-4.0                    602 k
 vdsm-xmlrpc                       noarch   4.18.15.3-1.el7.centos            ovirt-4.0                     25 k
 vdsm-yajsonrpc                    noarch   4.18.15.3-1.el7.centos            ovirt-4.0                     27 k

. . .

No qemu related update proposed.

The same if I run a "yum clean all" before.

My current situation about it:

[root@ractor ~]# rpm -qa|grep ^qemu
qemu-kvm-common-ev-2.3.0-31.el7.16.1.x86_64
qemu-img-ev-2.3.0-31.el7.16.1.x86_64
qemu-kvm-ev-2.3.0-31.el7.16.1.x86_64
qemu-kvm-tools-ev-2.3.0-31.el7.16.1.x86_64
[root@ractor ~]# 

Does this mean I'm going to have problems still, because of libvirt version provided by CentOS 7.3 and qemu-kvm-ev 2.3?
Also, what are exactly te problems we are speaking about?
Do I need to follow what suggested in one of the threads's mails

"
You can enable CentOS Virt SIG repo by running "yum install centos-release-qemu-ev" on your CentOS 7 systems.
and you'll have updated qemu-kvm-ev."

Is it planned that this repo is going to be enabled by default then, so that no manual intervention from users?

Thanks,
Gianluca