On Sun, 26 Mar 2006, Daniel Jarboe wrote:
>> Also, if I compile this module into the kernel, what would happen if I
>> used yum or up2date to update the kernel? I don't think the system would
>> boot... Maybe I can compile the kernel with the megaraid module as a
>> loadable module? Not sure, any help would be appreciated.
...
> Hrm, this might get long, but I think in this case it is better to be
> complete. As to the question of a loadable module or building it
> directly into the kernel, I would recommend building it as a loadable
> module if you can get away with it. That way you are still running
> the CentOS kernel which is tested for your distribution and all that
> jazz, not running your own kernel build which might possibly introduce
> some irregularities that were not tested for in QA.
FWIW, I've compiled my own kernel from vanilla source for the last maybe 10
years, on 5+ different machines, and haven't had a problem yet.
> You'd like to change as little as possible, and introducing a single
> loadable module is the best thing for that.
I'd say, use a loadable module so that if it needs to be reloaded, you can
rmmod / modprobe it; easier than rebooting.
> The reason you might not be able to work with a loadable module, however,
> is that this driver is a SCSI driver. If you need to read from a SCSI
> device to load the SCSI driver... well, good luck :). It'd be like me
> needing to read a book in Chinese to learn how to read Chinese.
Uh yeah. :-) HD drivers, root filesystem, etc. have to be built-in, not
modularized.
> Do you know if you boot process uses an initrd (initial ramdisk)? If
> not, you should probably start.
Also FWIW, I've never used one. If I had a modular-only driver for my boot
hardware, I would act differently.
> Sorry for rambling, but I hope this has answered your current questions
> (and a number of followup ones). To recap, the best thing to try is to
> build the loadable module for the same 2.6 version you want to run,
Yeah. Generally it has to be compiled against the kernel version you (will)
run.
-- -eben ebQenW1@EtaRmpTabYayU.rIr.OcoPm home.tampabay.rr.com/hactar A. A Top Poster \ http://www.fscked.co.uk/ B. Who's there? \ writing/ A. Knock-knock -- from bobward@xxx.com \ top-posting-cuss.html ----------------------------------------------------------------------- This list is provided as an unmoderated internet service by Networked Knowledge Systems (NKS). Views and opinions expressed in messages posted are those of the author and do not necessarily reflect the official policy or position of NKS or any of its employees.
This archive was generated by hypermail 2.1.3 : Fri Aug 01 2014 - 20:05:38 EDT