Storage usage issue: disk space keeps filling up despite 180-day retention policy

[robyfr]

I am experiencing a recurring issue with disk storage management in UTMStack. Even though I have configured a log retention policy of 180 days and the "cold storage" flag is disabled, my disk usage continues to grow until it triggers the 70% threshold alert, and eventually nears the 85% mark.

Environment details:

UTMStack Version: v10.9.5-202606021041

Storage Setup: /utmstack is mounted on a dedicated, separate hard drive.

Retention Policy: 180 days.

Cold Storage: Disabled.

The issue:
Whenever I receive the 70% capacity warning, I increase the disk size. However, after a few weeks, the storage usage climbs back up to the 70% threshold, prompting the same alerts again. I am essentially forced to continuously increase the disk size, which suggests that the automatic cleanup process might not be behaving as expected, or that I am misunderstanding the retention mechanics.

My questions:

Retention Logic: Does the system wait until the 85% "auto-delete" threshold is reached to effectively purge logs older than 180 days, rather than consistently pruning them based on the 180-day policy?

Diagnostics: Is there a way to investigate which sensors or timeframes are consuming the most storage? Could you provide guidance on:

API calls or SQL queries (if applicable) to analyze data volume by source/date?

Specific paths or files within /utmstack/ that I should inspect to identify the "heavy" data contributors?

I would appreciate any advice on how to troubleshoot this behavior and ensure that the retention policy is being enforced correctly.

Thank you for your support!