[rhelv6-list] module load order changed in initramfs

Jon Masters jcm at redhat.com
Tue Jan 11 11:05:32 UTC 2011

On Tue, 2011-01-11 at 16:04 +0530, neo3 matrix wrote:

> Can anybody tell me what is the driver load order in RHEL 6 and how
> can I find it out?


Module loading for hardware devices in RHEL6 initramfs is determined by
calls udev makes to modprobe, so in theory you will see very few as it's
a standard script. The order of loading may change from RHEL5, but
broadly follows the order in which the kernel enumerates devices.

I specifically changed module load ordering in RHEL6 to remove the
"parallel" loading approach taken in Fedora. That was cute for slight
improvement in boot speed, but it undermined predictability. Therefore,
the version of udev in RHEL6 will make *one call at a time*, and you
should always see the same ordering on each boot.

Can you let us know specifically what problem you are having? Possibly
by filing a support case or opening a Bugzilla?


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