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

[covici@ccs.covici.com]

Stefan G. Weichinger <lists@xunil.at> wrote:

> Am 15.05.2014 13:50, schrieb covici@ccs.covici.com:
> > 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?
> > 
> > OK, I was looking through the journal output and I think the key to the
> > lvm's not activating is the following:
> > 4 12:54:57 ccs systemd[1]: Got notification message for unit
> > systemd-journald.service
> > 4 12:54:57 ccs systemd[1]: systemd-journald.service: Got notification
> > message from PID 1750 (WATCHDOG=1...)
> > 4 12:54:57 ccs systemd[1]: systemd-journald.service: got WATCHDOG=1
> > 4 12:54:57 ccs systemd[1]: Received SIGCHLD from PID 2603 (lvm).
> > 4 12:54:57 ccs systemd[1]: Child 2602 (lvm) died (code=exited,
> > status=5/NOTINSSTALLED)
> > 4 12:54:57 ccs systemd[1]: Child 2603 (lvm) died (code=exited,
> > status=5/NOTINSSTALLED)
> > 4 12:54:57 ccs systemd[1]: Child 2610 (lvm) died (code=exited,
> > status=5/NOTINSSTALLED)
> > 4 12:54:57 ccs systemd[1]: Job
> > dev-mapper-linux\x2d\x2dfiles\x2dportage.device/start timed out.
> > 
> > So what is not installed?
> 
> My search tells me that this might be a misinterpreted return code.
> I might repeat myself but the thread gets quite large now:
> 
> Did you enable lvm2-lvmetad.service or socket (and set use_lvmetad=1 in
> lvm.conf)?
Yep, did not see that starting.

> 
> I think you don't have to, I just ask to check.
> 
> What release of lvm2, btw?
105-r2


> 
> > Also, for the first two lines, I get hundreds of thatpair of lines, how
> > can I prevent such.
> 
> The PID1 stuff ?

Nope, the notifications about journald and watchdog=1

> 
> > So, between the lvm problem and the udev renaming my eth0 devices these
> > are the key as to why things are going wrong -- with openrc udev is not
> > renaming eth0 at all.
> 
> We'll take care of eth0 as well as soon your box boots correctly ;-)
> 
> 
> Stefan

-- 
Your life is like a penny.  You're going to lose it.  The question is:
How do
you spend it?

         John Covici
         covici@ccs.covici.com