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

["Canek Peláez Valdés" <caneko@gmail.com>]

On Thu, May 15, 2014 at 4:48 AM,  <covici@ccs.covici.com> wrote:
> Canek Peláez Valdés <caneko@gmail.com> wrote:
>
>> On Thu, May 15, 2014 at 1:18 AM, Canek Peláez Valdés <caneko@gmail.com> wrote:
>> > On Wed, May 14, 2014 at 5:26 PM,  <covici@ccs.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?
>
> I did not use --hostonly-cmdline because I have other parameters and
> wanted to keep everyting together -- should that make a difference?

I think so.

>  If
> I did use that then would I have append="" in lilo.conf  or the grub
> equivalemt?

Nothing; dracut would take care of everything (in theory).

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