Re: Why akmod fails on F22 for nvidia (and possible other uses)

On 25 Jul 2015, at 17:34, Massi Ergosum <massi.ergosum(a)gmail.com&gt; wrote: An interesting bug: https://bugzilla.redhat.com/show_bug.cgi?id=1187111 M. 2015-07-24 16:17 GMT+02:00 Barry Scott <barry(a)barrys-emacs.org&gt;: > I did some investigation as to why akmod will fail to install a > the nvidia dirver when a new kernel turns up. > > The problem is that dnf-makecache.service runs at the same time > as akmods.service. DNF locks the RPM data base which prevents > akmods from installing the RPM's it built. > > Here is a extract from 346.72-2.1-for-4.0.8-300.fc22.x86_64.failed.log > > Running transaction > RPMDB already locked by 2285 > The application with PID 2285 is: dnf > Memory : 116 M RSS (677 MB VSZ) > Started: Sat Jul 18 12:09:56 2015 - 06:20 ago > State : Sleeping > 2015/07/18 12:16:16 akmods: Could not install newly built RPMs. You can > find them and the logfile 2015/07/18 12:16:16 akmods: > 346.72-2.1-for-4.0.8-300.fc22.x86_64.failed.log > in /var/cache/akmods/nvidia/ Looking in the journal shows dnf-makecache > running at the time that akmods.service need RPMDB access. > > I ended up working around the issue with: > > systemctl disable dnf-makecache.service > systemctl disable dnf-makecache.timer > > I'm not sure what the right systemd unit change will be to have a > reliable start up. How do you prevent dnf-makecache from running > until after akmods.service has run given that started off a timer? > > At the next kernel release I'll know if this is successful. > > Barry >