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Author: Marc Shapiro
Date:  
To: Gregory Nowak
CC: dng
New-Topics: Re: [DNG] /lib/modules on separate partition? (Not SOLVED, but DONE)
Subject: Re: [DNG] /lib/modules on separate partition?

On 11/20/22 17:48, Gregory Nowak wrote:
> On Sun, Nov 20, 2022 at 03:44:46PM -0800, Marc Shapiro via Dng wrote:
>> On 11/20/22 14:31, Gregory Nowak wrote:
>>> On Sat, Nov 19, 2022 at 08:55:06PM -0800, Marc Shapiro via Dng wrote:
>>>> Is there a way to have the system mount /lib/modules immediately after
>>>> mounting / and before loading the remaining kernel modules? Or even better,
>>>> is there a way to have all modules that should be loaded during the boot
>>>> process come from the initrd?
>>> You already got the answer on how to include all needed modules in the
>>> initrd. As for mounting /lib/modules right after /, add a line similar
>>> to the following in /etc/fstab right below the entry for /:
>>>
>>> /dev/group-lvm /lib/modules ext4 defaults 0 1
>>>
>>> This should cause /lib/modules to be mounted right after /. Replace
>>> /dev/group-lvm with the volume containing /lib/modules. Also adjust
>>> the file system type to whatever fs you're using.
>> That was the first thing that I tried, since it would be the easiest and not
>> required any additional steps when a new kernel is installed.
>> Unfortunately, /lib/modules still mounts along with all the rest of my
>> partitions, after the modules are loaded.
> So almost certainly, the modules are being loaded and the root fs is
> being mounted in the initrd, before /etc/fstab gets read. Including
> all the modules in the initrd maybe your only option then.
>
> Greg


I found another way, which works on Debian Stretch, but not on Devuan
Beowulf:

I got the list of modules, as Tito suggested, but instead of updating
the initrd, I put the list of modules into /etc/modules. In Stretch,
this causes them to load after /lib/modules is mounted and everything
works as it should.  For some reason, though, it does not work for
Beowulf.  I also tried putting the list in a conf file in
/etc/modules-load.d, but that didn't work, either. It would seem that
updating the initrd may, in fact, be the only workable option.

Marc