Bug ID 435607: Datastor Message Queue Lockup

Last Modified: May 29, 2024

Affected Product(s):
BIG-IP AAM(all modules)

Known Affected Versions:
11.5.1, 11.5.2, 11.5.3, 11.5.4, 11.5.5, 11.5.6, 11.5.7, 11.5.8, 11.5.9, 11.5.10

Opened: Oct 28, 2013

Severity: 3-Major

Symptoms

In some cases, the message queue functionality of datastor can lockup, causing TMM to be restarted by SOD.

Impact

TMM restarts, as does datastor.

Conditions

These vary, but include long delays or network instability on the back end, excessive disc activity on the discs that contain the backing store extent and abandoned cache level transitions due to size issues.

Workaround

While there is no way to guarantee this does not happen, it happens fairly rarely, and the risk can be reduced by utilizing cache entry management through policy control. In the worst cases, turning off backing store support is recommended.

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips