Just as a comment, I have a similar system, though no ACS, also recently updated Arch and noticed a change in libvirt behavior. Specifically, my VM which didn't autostart for some reason (there were multiple cryptic errors in the journal) started autostarting again. (It worked when I first set it up, then stopped several Arch updates ago). The joys of running Arch and subtle interactions.... I assume it will stop again at some future Arch update.
On Aug 2, 2016, at 3:09 PM, Alex Williamson <alex l williamson gmail com> wrote: