Bug#808151: systemd: failed to start remount root and kernel file system

[Michael Biebl]

Am 17.12.2015 um 13:46 schrieb Frank B. Brokken:
> Dear Michael Biebl, you wrote:
> 
>> What happens afterwards? Are you dropped into the rescue shell?
> 
> Afterwards (i.e., after the initial failure message) the system tries to
> continue booting, but shows lots of failure messages, eventually grinding to a
> halt. No reboot (e.g. ctrl-alt-del) is possible and there's no rescue shell.
> 
>> If not, try to enable the debug shell by adding "systemd.debug-shell" to
>> the kernel command line. This will give you a root shell on tty9.
> 
> Unfortunately, it doesn't, since the system halts (I first removed the
> automatic reboot on failure).

What exactly do you mean with halt? The systems completely locks up so
you can't use the keyboard and switch to tty9?

That would sound like a kernel problem.

> However, during the process I observed that setting systemd.debug-shell and
> removing the default 'quiet' specification from grub's /etc/default/grub (so,
> now it specifies:
> 
> GRUB_CMDLINE_LINUX_DEFAULT="systemd.debug-shell" 
> 
> greatly reduces the chances of a failing boot. Not completely, but
> greatly. Still, when rebooting fails there's just the plain halt, w/o a debug
> shell. Since removing the quiet also produces a lot more output on the screen,
> might my problem not simply be some timing problem?

Can you make a screenshot or a video from the boot process with "quiet"
removed from the kernel command line.


-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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