Bug ID 487696: Number of CPU allocated for ASM guests

Last Modified: Sep 13, 2023

Affected Product(s):
BIG-IP ASM, LTM(all modules)

Known Affected Versions:
11.5.0, 11.5.1, 11.6.0, 11.6.1, 11.6.2, 11.6.3, 11.6.3.1, 11.6.3.2, 11.6.3.3, 11.6.3.4, 11.6.4, 11.6.5, 11.6.5.1, 11.6.5.2, 11.6.5.3, 12.1.0 HF1, 12.1.0 HF2, 12.1.1 HF1, 12.1.1 HF2, 12.1.2 HF1, 12.1.2 HF2

Fixed In:
12.0.0, 11.5.2

Opened: Oct 30, 2014

Severity: 3-Major

Related Article: K90320292

Symptoms

The TMM plugin manager does not expect/support an ASM guest configuration of 10 cores, thus its calculations as to the number of devices required and numbering does not match the existing number of threads/devices.

Impact

System does not start up or has intermittent failures if running.

Conditions

This occurs when there are 10 CPUs allocated for ASM guests.

Workaround

Reduce the number of cores to 8 or increase the number to 12.

Fix Information

This release disables channel splitting/division when number of TMMs is not a supported number, so ASM guests work correctly.

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips