Am 22.01.2013 23:04, schrieb Joe Lawrence:
> Hello Harold / list,
>
> I'm trying to build an initramfs that includes an out-of-tree kernel
> module for the mpt2sas driver without much success (by default).
>
> The modified driver in question resides at:
>
> /lib/modules/3.8.0-rc4.sra+/updates/lsb-ft/extra/mpt2sas/mpt2sas.ko
>
> and recent versions of dracut exclude this driver from the generated
> initramfs. This is on a F18 install, 3.8.0-rc4 kernel and a newly
> recompiled out-of-tree mpt2sas ko file.
>
> Using git bisect, I found dracut *would* include the updated .ko until...
>
> d8aeb3a72afe03e426f4ea9f07c857c9a499144f is the first bad commit
> commit d8aeb3a72afe03e426f4ea9f07c857c9a499144f
> Author: Harald Hoyer <harald@xxxxxxxxxx>
> Date: Wed Jun 27 09:35:39 2012 +0200
>
> dracut.sh, dracut-functions.sh: do lazy kernel module dep resolving
>
> First, we just install the kernel module and keep track, what we
> installed. At the very end, call modprobe and modinfo for firmwares to
> resolve all kernel module dependencies. This speeds up image creation,
> because we can call modprobe and modinfo with many modules.
>
> I notice that find_kernel_modules_by_path() filters out any string that
> does not start with 'kernel' as well as the given path, ie 'drivers/scsi'
> (by design I would assume).
>
> If the in-tree mpt2sas driver is loaded, then
> find_kernel_modules_by_path() would echo the driver since:
>
> $1 = drivers/scsi
> $a = kernel/drivers/scsi/mpt2sas/mpt2sas.ko
>
> but when the out-of-tree driver is used, then
>
> $1 = drivers/scsi
> $a = updates/lsb-ft/extra/mpt2sas/mpt2sas.ko
>
> fails this check.
>
> 1 - Should Dracut be checking the /lib/modules/ver/{updates,extras}
> directories as well as the in-tree kernel directory for drivers?
yes
>
> 2 - Do modules underneath /lib/modules/ver/{updates,extras} need to
> include their respective directory structure (ie, 'drivers/scsi').
yes
>
> I can avoid this by forcing dracut to include out-of-tree drivers using
> the add_drivers directive, but I defer to the dracut coders here on how I
> can best include them by default.
>
> Regards,
>
> -- Joe
Thanks for reporting this, will fix this bug!
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