Last Modified: Nov 05, 2025
Affected Product(s):
BIG-IP ASM, Install/Upgrade
Known Affected Versions:
17.5.0, 17.5.1, 17.5.1.2, 17.5.1.3
Fixed In:
21.0.0
Opened: Aug 13, 2025 Severity: 3-Major
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.
Disk space was exhausted, leading to failure to apply configuration or configuration corruption.
Many small config changes are applied in quick succession. This can occur during a version upgrade or EHF installation.
None
File cleanup now correctly removes files that are no longer needed, regardless of their age. "Duplicate" data files are now hardlinked to reduce wasted disk space.