@maikel : Not the same issue mate, this is the first time ever i install zfsonlinux and my packages are for fedora 23.
I used the new packages available through github (specific for fedora 23), the module could not build for whathever reason, seems that it is looking for files i do not have since a genius decided that when you update the system why not update the kernel itself #yolo.
You aren't giving us any useful information. There is no such error as "could not build for whatever reason". Give us the actual failure message instead of being coy about it.
Best. Star in a new Terminal window, follow their two steps, copy paste the entire result to
fpaste.org, and then post the URL here.
So i'm screwed, i have absolutly zero knowledge in kernel so i have no idea how to get those files back (something like kernel-header, sources etc) and i have to boot on my previous kernel otherwise i cannot launch my qemu vm which uses vfio.
Hopefully you filled a kernel bug on that?
In the meantime you need to use --exclude=kernel whenever you do system updates or it will update the kernel and kernel-headers.
And there can be only one kernel-headers version installed at a time. This can get tricky (OK annoying).
What do you get for
dnf downgrade kernel-headers
Does it correctly offer to install the version for the kernel needed for vfio? If yes, let dnf downgrade kernel-headers. Then retry reinstalling ZFS stuff.
Next look at man dnf.conf to see how you can add an exclude for the kernel, until the kernel vfio bug gets fixed.
Chris Murphy