Hi, So I guess since CentOS included libvirt 3.2 (7-1708, or around RHEL 7.4), it's been incompatible with libvirt-python requirements of 2.1.0 in newton [1] and 2.5.0 in ocata [2] (pike, at 3.5.0, works). Do we want to do anything about this? I can think of several options * bump the libvirt-python versions on older branches * Create an older centos image (can't imagine we have the person bandwidth to maintain this) * Hack something in devstack (seems rather pointless to test something so far outside deployments). * Turn off CentOS testing for old devstack branches None are particularly appealing... (I'm sorry if this has been discussed, I have great déjà vu about it, maybe we were talking about it at summit or something). -i [1] http://logs.openstack.org/48/531248/2/check/legacy-tempest-dsvm-neutron-full-centos-7/80fa903/logs/devstacklog.txt.gz#_2018-01-09_05_14_40_960 [2] http://logs.openstack.org/50/531250/2/check/legacy-tempest-dsvm-neutron-full-centos-7/1c711f5/logs/devstacklog.txt.gz#_2018-01-09_20_43_08_833