Re: [gentoo-user] boot problems

[J. Roeleveld]

On Saturday, May 03, 2014 01:12:45 PM Stefan G. Weichinger wrote:
> Am 03.05.2014 13:05, schrieb J. Roeleveld:
> > dracut = initramfs
> > Did you update the initramfs recently? If out-of-sync with what is on the
> > "main" environment, it could lead to issues.
> >
> >> I worked with exactly this box around 10hrs ago and it booted fine then.
> >> I will check genlop what I upgraded at night ...
> >
> > And rethink everything you did in the last 10 hours. Something caused an
> > issue.
> > Also, check that the disks are fine and you don't have a degraded raid-
> > environment. The initramfs might try to have it rebuild. Which means the
> > whole system can be slow.
> >
> >> Got to eat now and take a rest ... I "love" to fix issues on a saturday
> >
> > Enjoy your lunch, I just had mine.
>
> next steps:
>
> booted into emergency mode directly.
>
> LVs on the SSD (non-raid-based) show up fine.

LVM working then.

> No mdadm-RAIDs started yet ... when I run "systemctl start mdadm" to
> pull up the arrays ... it hangs ... even looks exactly the same as in
> the normal boot, 2 lines from systemd-fsck ... then blinking cursor.

Sounds like an issue with the mdadm-raid devices.
Try setting those up WITHOUT systemctl (or init.d-scripts)

Then checking
- /proc/mdstat
- dmesg
- logging
Any of those might show an error.
Maybe ssh-in from a seperate machine to enable the raid-devices and have the 
local machine show a "tail -f" of the logs to see what happens.

> Maybe -> dracut ... tell it to assemble the arrays via kernel-option ...
> or maybe rebuild the initramfs (not so likely as it should boot with
> older kernels/initramfs then).

Which mdadm metadata format did you use when creating them?
Only 1 or 2 support auto-detection and kernel-assembly

> Yes, lunch ..  thanks ;)

13:20, late lunch :)

--
Joost