High disk space utilization in /var/log partition by nginx_access.log
Article ID: 169391
SSL Visibility Appliance Software
This was initially addressed by SSLV-1955 in SV 184.108.40.206. If you are running a version older than SV 220.127.116.11, update to the latest SV version.
If the problem happens in SV 18.104.22.168 or newer versions, a Technical Case should be opened with Symantec Support for further investigation.