Re: [Patch v2 2/2] let user specify action after systemd start dracut-emergency

[Baoquan <bhe-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

On 05/30/2013 06:33 PM, Harald Hoyer wrote:

> worksforme... with
> http://git.kernel.org/cgit/boot/dracut/dracut.git/commit/?id=b78e6ac2c328c76057b17059a761ab44707f9aa0
> and
> "rd.shell rd.break action_on_fail=continue"
> 
> dracut-pre-pivot[227]: /lib/dracut-lib.sh@933(_emergency_shell): systemctl start
> dracut-emergency.service
> Trying to enqueue job dracut-emergency.service/start/replace
> Installed new job dracut-emergency.service/start as 39
> Enqueued job dracut-emergency.service/start as 39
> Starting of dracut-emergency.service requested but condition failed. Ignoring.
> Job dracut-emergency.service/start finished, result=done
> 
> .. no rd.shell on rd.break...
> 


Hi Harald,

I tried your method, add


1)"rd.break=pre-pivot action_on_fail=continue" to kernel cmdline;

2)add "ConditionKernelCommandLine=!action_on_fail=continue" into
dracut-emergency.service

it works very well, won't drop into shell. And this works for 1st kernel
and kdump kernel.

However, when I tried the mount failed method, it doesn't work.

1)"rd.break=pre-pivot action_on_fail=continue" to kernel cmdline;

2)add "ConditionKernelCommandLine=!action_on_fail=continue" into
dracut-emergency.service

3)change root to a wrong name in /proc/cmdline to make mount root failed.

:/# cat /proc/cmdline
root=/dev/mapper/fedora-root111 action_on_fail=continue .....

In this way, it always drops into shell.