Hello Community, I was waiting for 7.7 to come up before I upgrade my lab. The engine got upgraded  without issues, same for OS - but after the system powered up I receive the  following: [root@ovirt1 ~]# ssh engine root@engine's password: Last login: Wed Sep 18 19:48:32 2019 from ovirt1.localdomainnet_mlx5: cannot load glue library: libibverbs.so.1: cannot open shared object file: No such file or directory net_mlx5: cannot initialize PMD due to missing run-time dependency on rdma-core libraries (libibverbs, libmlx5) PMD: net_mlx4: cannot load glue library: libibverbs.so.1: cannot open shared object file: No such file or directory PMD: net_mlx4: cannot initialize PMD due to missing run-time dependency on rdma-core libraries (libibverbs, libmlx4) net_mlx5: cannot load glue library: libibverbs.so.1: cannot open shared object file: No such file or directory net_mlx5: cannot initialize PMD due to missing run-time dependency on rdma-core libraries (libibverbs, libmlx5) PMD: net_mlx4: cannot load glue library: libibverbs.so.1: cannot open shared object file: No such file or directory PMD: net_mlx4: cannot initialize PMD due to missing run-time dependency on rdma-core libraries (libibverbs, libmlx4) [root@engine ~]# Anyone else experiecing this  ? I can't find libmlx4  or libmlx5 in the repos. P.S.: I have a gluster  snapshot, so I can rollback if needed. For now I will postpone  my hosts' upgrade. Best Regards, Strahil Nikolov