Re: [gentoo-user] problems getting systemd to work

[Canek Peláez Valdés]

On Thu, May 15, 2014 at 1:18 AM, Canek Peláez Valdés <caneko@×××××.com> wrote:
> On Wed, May 14, 2014 at 5:26 PM,  <covici@××××××××××.com> wrote:
> [snip]
>>
>> Well, the workaround sort of worked -- it went through the initrd -- I
>> had debug in the kernel command line, but it did not stop for nothing!
>> When it went to the real root, however it did not activate any of the
>> lvm volumes I had except for what I specified in the kernel command
>> line, causing things not to work well.  Also, I noticed that if insisted
>> on using the predictable network names, even though I have
>> /etc/udev/rules.d/70-persistent-net.rules and
>> /etc/udev/rules.d/80-name-slot.rules which work fine in openrc to give
>> me back my eth* names.  So all in all, it was a mess and took me to an
>> emergency shell and that was the end of that.  I did eventually activate
>> some volumes by lvchange -aay, but obviously that would not work well.
>
> OK, I was a little mystified about why dracut-036 worked on my system
> and 037 didn't. Before I tried any workaround, I wanted to know what
> changed from the previous version to the current one.
>
> So I generated an initramfs with dracut-036-r4 and another one with
> dracut-037-r1, and I tried to see what changed from one to the other.
> The answer is surprisingly easy: in /etc/cmdline.d/, the following
> files where in the 036-r4 version, but not in the 037-r4:
>
> 90crypt.conf
> 90lvm.conf
> 90mdraid.conf
> base.conf
>
> Te contents of those files are (90crypt.conf is empty):
>
> 90lvm.conf
>    rd.lvm.lv=vg/vol1
>    rd.lvm.lv=vg/vol4
>    rd.lvm.lv=vg/vol3
>
> 90mdraid.conf
>    rd.md.uuid=f4a59e68:fbe4039f:a39fc86d:e9e91e12
>
> base.conf
>    ro
>
> So I just changed my /etc/default/grub file:
>
> GRUB_CMDLINE_LINUX="init=/usr/lib/systemd/systemd quiet nosplash
> rd.lvm.lv=vg/vol1 rd.lvm.lv=vg/vol4 rd.lvm.lv=vg/vol3
> rd.md.uuid=f4a59e68:fbe4039f:a39fc86d:e9e91e12"
>
> I regenerated my GRUB2 config, and now again my LVM test system works
> perfectly with the latest dracut version.

I'm an idiot; I didn't saw the documentation about hostonly_cmdline;
BTW Jc, you used host_cmdline, I think the former is the correct one.

So, to resume: there is no bug, is just that before hostonly_cmdline
was yes by default, and now is no by default. This change was
documented, but I failed to notice it (and I think the ebuild in
Gentoo should print an einfo message).

Anyway, I think that explains all my problems; John, I don't know if
it will solve yours. Again: did you used "dracut --print-cmdline" to
get the command line? Also, have you tried to use -H to generate your
initramfs? And finally, have you tried with --hostonly-cmdline?

Regards.
-- 
Canek Peláez Valdés
Profesor de asignatura, Facultad de Ciencias
Universidad Nacional Autónoma de México