Bug ID 2017105: Disk partition /var full after quick config changes

Last Modified: Aug 30, 2025

Affected Product(s):
BIG-IP ASM, Install/Upgrade(all modules)

Known Affected Versions:
17.5.0, 17.5.1

Opened: Aug 13, 2025

Severity: 3-Major

Symptoms

When a new configuration is applied, the previous data files are kept as long as they may be needed and also had a minimum age for deletion applied. When multiple config changes were made in quick succession this resulting in multiple generations that were under the minimum age for cleanup, and some duplicate data files that hadn't changed between generations. This can exhaust the available space in /var.

Impact

Disk space was exhausted, leading to failure to apply configuration or configuration corruption.

Conditions

Many small config changes are applied in quick succession. This can occur during a version upgrade or EHF installation.

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips