https://access.redhat.com/documentation/en/red-hat-virtualization/4.0/single/administration-guide/#sect-SPICE_Log_Files Whole section "18.3.3. SPICE Logs for SPICE Clients Launched Using Browser Plug-ins" can be removed completely. There no any more Browser Plug-ins in RHV 4.x
Thanks, Andrei. We're tracking this in bug 1326295 already, so closing this one as a duplicate. *** This bug has been marked as a duplicate of bug 1326295 ***