The Smoothwall Filter & Firewall Administration Dashboard page shows a low disk space message. This article shows you how to identify which partition is running low on disk space and a couple of different things you can do to reduce the disk space on your logs partition.
This means that the amount of disk space left on one of the two partitions is running low. We need to determine the partition that is running low on space and the type of data causing this.
System or Log Partition
The Dashboard page shows a graphic that indicates how much space is used by each partition.
The Logs partition holds all logs generated. This partition is the most likely to be the cause. Log retention likely needs reducing to free up disk space.
The System partition holds the proxy cache and the reports. The disk space in use on the system partition should rarely fluctuate. If the system partition is running low, Smoothwall support might need to get involved.
First, check what type of logs are taking up the space. Navigate to Reports » Settings » Datastore settings and look at the graph on the Current usage tab. Try to identify the type of logs that are causing the low disk space warning. Most likely this will be the Guardian logs.
Setting Retention for Guardian Logs
The Retention settings section on the Datastore settings page sets both minimum and maximum months' retention for Guardian web filter logs and firewall logs. You should decrease the maximum retention by how much you can see on the Usage estimates tab next to the Current usage tab. The Usage estimates tab shows how much space is needed for up to 12 months. Use these numbers to set the maximum retention rate to a value that does not exceed the disk space available.
If the system partition is running low on space, it's likely Smoothwall support will need to be involved but there are one or two things you can check before you contact support. To see what size the proxy cache is set to navigate to Web proxy » Web proxy » Settings, click to expand the Advanced » section. Under the Cache options section, the default value is 1500 MB. If this has been set higher, reset it back to 1500 MB and click Save and restart with cleared cache at the bottom of the page.
Another thing that you can check is the number of archives. Navigate to check System » Maintenance » Archives . When an archive is setup, the option to generate an automatic backup will generate a weekly backup as well as take a backup at reboot. If these archives are not pruned automatically, the list of stored archives could grow quite large. Set the pruning of stored archives by navigating to System » Maintenance » Scheduler.
Finally, the stored reports generated by the report scheduler might also be taking up space. Navigate to Reports » Reports » Recent and saved to view all the saved reports. If automated reports have been running for a while, this list might grow quite large as well. While it is possible to delete them manually, it's tedious work and support will be able to do this quicker in the backend.
If none of the above solves the disk space issues, please contact Smoothwall support.
Set up Alerts for Low Disk Space Warning Level
You can set up low disk space alerts and notifications by going to Reports » Alerts » Alert settings or Reports » Logs » Log settings. Adjust the threshold values to set when alerts are triggered and sent.
See our knowledge base article, Reducing Logging on a Smoothwall and Troubleshooting Excessive Logging.