Specifying Module Parameters; Storage Parameters - Red Hat ENTERPRISE LINUX 5 - DEPLOYMENT Deployment Manual

Chapter 41. General Parameters and Modules
Tip
This approach is not necessary for network and SCSI interfaces because they have their
own specific mechanisms.

41.3. Specifying Module Parameters

In some situations, it may be necessary to supply parameters to a module as it is loaded for it to
function properly.
For instance, to enable full duplex at 100Mbps connection speed for an Intel Ether Express/100 card,
load the e100 driver with the e100_speed_duplex=4 option.
Caution
When a parameter has commas, be sure not to put a space after a comma.
Tip
The modinfo command is also useful for listing various information about a kernel
module, such as version, dependencies, paramater options, and aliases.

41.4. Storage parameters

Hardware
3ware Storage Controller and
9000 series
Adaptec Advanced Raid
Products, Dell PERC2, 2/Si,
3/Si, 3/Di, HP NetRAID-4M,
IBM ServeRAID, and ICP SCSI
driver
562
Module
3w-xxxx.ko, 3w-9xxx.ko
aacraid.ko
Parameters
nondasd — Control scanning
of hba for nondasd devices.
0=off, 1=on
dacmode — Control whether
dma addressing is using 64 bit
DAC. 0=off, 1=on
commit — Control whether a
COMMIT_CONFIG is issued to
the adapter for foreign arrays.
This is typically needed in
systems that do not have a
BIOS. 0=off, 1=on
startup_timeout — The
duration of time in seconds
to wait for adapter to have it's
kernel up and running. This
is typically adjusted for large