Akmods run RPM install as service?

[Richard Shaw]

On Wed, Sep 14, 2016 at 12:12 PM, Nicolas Chauvet <kwizart at gmail.com> wrote:

> 2016-09-14 18:01 GMT+02:00 Richard Shaw <hobbes1069 at gmail.com>:
> > I've had a few failures but not really sure as to the cause, but I've
> been
> > toying around with doing the final RPM install with a systemd service
> > instead of calling dnf directly with the kernel posttrans script.
> >
> > Thoughts? Pitfalls?
> I really don't understand the method here.
> Can you reproduce any issue ? or do you have received informal
> informations that the posttrans script wasn't working for a reason ?
> Because for now It's working fine with me all the time, so there is
> probably an unknown corner case here.
>

Reproduce, no, but I've had a couple of occasions where I was not able to
get to graphical boot. I just read about the need to run depmod on a Fedora
thread. I didn't think about that so I manually erased the RPMs and let
akmod rebuild them which fixed the problem.



> For some known ones, the major reason why the kernel posttrans script
> might fails is because it's missing the matching kernel-devel for the
> new installed kernel. Please see:
> https://bugzilla.rpmfusion.org/show_bug.cgi?id=3386 (please note that
> while its reported against the akmods maintainer, anyone can take this
> and implement, not only Richard or me).
> In others word, you need to force to install the matching kernel-devel
> along with the kernel update (dnf update kernel will break).
>

I'm certainly not missing kernel-devel but I have had intermittent issues.


Looking at the current akmods.service, can you please explain why:
> - It's using before display-manager.service (that's not the point with
> nvidia here, if the nvidia driver isn't here, we should better
> implement a fallback to anything else)
>

Are you saying it should be dependent on an earlier target? I chose
display-manager since nvidia is my primary use.



> - RemainAfterExit=yes, Can you point me why this was added ? akmods
> shouldn't remains once it has finished to build.
>

Since it runs and exits (not a daemon) this option keeps systemd from
thinking it failed.



> - It has "ExecStart=-/usr/sbin/modprobe nvidia", this is not the way
> the nvidia driver should be loaded, it's loaded by the DDX driver
> (well not that true with modern nvidia driver,but at least it shoudn't
> be loaded that way).
>

I can't remember why I added that but if must have fixed a problem I was
having at the time.


I think having more into systemd service might help (you can trigger a
> start akmods.service from posttrans), I don't think having yet another
> akmods script will help.


No new script, just alter the akmodsposttrans to call "systemctl start
akmods-install" or whatever it will be called instead of calling akmods
directly.

Thanks,
Richard
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