Last Modified: Oct 06, 2020
See more info
Known Affected Versions:
11.1.0, 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.4.1, 11.5.0, 11.5.1, 11.5.1 HF1, 11.5.1 HF10, 11.5.1 HF11, 11.5.1 HF2, 11.5.1 HF3, 11.5.1 HF4, 11.5.1 HF5, 11.5.1 HF6, 11.5.1 HF7, 11.5.1 HF8, 11.5.1 HF9, 11.5.10, 11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4
12.0.0, 11.6.0 HF5, 11.5.2, 11.4.1 HF9
Opened: Jun 17, 2014
Related AskF5 Article: K16184
If the device experiences an IDE DMA timeout, some processes become unresponsive and the kernel logs messages containing 'DMA timeout error' in kern.log. An unfulfilled request from the kernel of the IDE device might result in uninterruptible, stuck processes.
This condition can cause the i/o request to never complete and result in unresponsive and uninterruptible processes. Various symptoms result depending on the affected process. Some conditions might require a power cycle to correct.
This occurs on VIPRION B4100/B4100N (A100), B4200/B4200N (A107) blades and on Virtual Edition (VE) configurations deployed with IDE storage drivers (Xen, Hyper-V).
IDE DMA timeouts no longer result in become unresponsive on VIPRION B4100/B4100N (A100), B4200/B4200N (A107) blades and on Virtual Edition (VE) configurations deployed with IDE storage drivers (Xen, Hyper-V).