Red Hat Training
A Red Hat training course is available for Red Hat Enterprise Linux
Chapter 2. Kernel
Timeout Value Control
The Red Hat Enterprise Linux 5.11 kernel now includes an option to control the timeout value for I/O error recovery commands. Previously, the retry value was set to 5, which resulted in 90-second timing out messages. Reducing the number of retries allows for a more efficient management of timeout layers.
LSI 12 Gb/s adapters with the MegaRAID SAS driver
LSI MegaRAID SAS 9360/9380 12Gb/s controllers, previously supported as a Technology Preview, are now fully supported in Red Hat Enterprise Linux 5.11.