On Sat, Sep 13, 2025 at 11:39 PM Michael D. Setzer II via users <
[email protected]> wrote:
> On local 3 notebooks, was able to to remove oldest kernel using
> dnf, and modifying the dnf.conf to only allow 2 kernels.
> Then the install went thru ok.
> On one I shifted / partition over 512M and expanded /boot to make
> it 1.5G now.
> I've got 5 other machines that are 7 timezones away, and did same
> process to get them to be able to install new kernels.
>
> Current notebook has a 1.5G boot so has the 3 kernels and rescue
> kernel.
> /dev/sdb2 1512328 945096 519396 65% /boot
>
> Just looking at img files.
> 180141088 Sep 6 04:19 initramfs-6.16.4-200.fc42.x86_64.img
> 180182306 Sep 10 02:56 initramfs-6.16.5-200.fc42.x86_64.img
> 180186104 Sep 12 14:14 initramfs-6.16.7-200.fc42.x86_64.img
> 278057070 Sep 6 04:21
> initramfs-0-rescue-5454d68084c145e496d5ce383b5147de.img
>
> Have used dnfup for long time, so not sure if size was changed at
> some point. Just checked a recent install on 2TB system, and it
> shows boot as 1G?
>
> But seeing its img files about 100M smaller than on this one?
>
> 76159287 Sep 5 01:19 initramfs-6.16.4-200.fc42.x86_64.img
> 79431805 Sep 9 18:32 initramfs-6.16.5-200.fc42.x86_64.img
> 79753328 Sep 13 19:33 initramfs-6.16.7-200.fc42.x86_64.img
> 176153063 Sep 1 22:44
> initramfs-0-rescue-3b8d97eb0c824e69a66569165466fcc9.img
>
> So, not sure why huge difference in sizes?
>
"sloppy" host-only mde was recently added to make systems bootable after
"minor" hardware changes:
man dracut.conf:
hostonly_mode="{sloppy|strict}"
Specify the host-only mode to use (default=sloppy).
In "sloppy" host-only mode, extra drivers and modules will be
installed, so minor hardware change
won’t make the image unbootable (e.g. changed keyboard), and the
image is still portable among similar hosts.
With "strict" mode enabled, anything not necessary for booting
the local host in its current state will not be
included, and modules may make additional efforts to save more
space. Minor changes in hardware or environment
can make the image unbootable.
Because I rarely make hardware changes, I added:
% cat /etc/dracut.conf.d/hostonly.conf
# save space
hostonly=yes
hostonly_mode=strict
If I wanted "sloppy" mode I would increase the size of /boot. Dracut adds
both modules and firmware, so many
of the systems that run out of space have Nvidia graphics.
--
George N. White III
--
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