On Thu, Nov 02, 2017 at 12:10:16PM +0100, Alexander Wigen wrote:

Hi there,

I'm hitting a conflict when using Ceph and oVirt 4.2beta.

The upcoming oVirt 4.2 release is pulling in ~liburcu-cds.so.6 where Ceph is requiring liburcu-cds.so.1. And the same for liburcu-bp.

Here is the output from yum update:

http://pastebin.centos.org/411116/

This happens due to a conflict between packages from the CentOS Storage SIG and Fedora EPEL. The combination of these repositories is not (well) tested and it seems the lttng-ust package from EPEL is the culprit. If you do not need lttng-ust, you should be able to uninstall that package and use userspace-rcu from the Storage SIG.

This has also been reported as https://bugs.centos.org/view.php?id=14053

The best way forward is to get an updated version of userspace-rcu in Fedora EPEL and get the dependent packages rebuilt. I'll report it as a bug against EPEL and will update the CentOS bug once done.

HTH, Niels