[systemd-devel] systemd unexpectedly dropping into rescue mode - how do I best debug this?

[Ingo Molnar]

* Mirco Tischler <mt-ml at gmx.de> wrote:

> 2012/10/4 Ingo Molnar <mingo at kernel.org>:
> > Here are the kernel parameters:
> >
> >  lyra:~> cat /proc/cmdline
> >
> >  BOOT_IMAGE=/boot/bzImage
> >  root=UUID=dd8873f1-9cfd-4338-b9ec-f4902abdc486 ro single rd.md=0
> >  rd.lvm=0 rd.dm=0 SYSFONT=latarcyrheb-sun16
> >  earlyprintk=serial,ttyS0,115200 console=ttyS0,115200 console=tty
> >  KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8
>
> You boot into single user mode, which I guess is translated 
> into runlevel1, which is a symlink to rescue.target by 
> default?

LOL! :)

I copied that 'single' parameter from an older kernel that 
booted just fine:

 linux   /boot/vmlinuz-3.5.4-2.fc17.x86_64 
 root=UUID=dd8873f1-9cfd-4338-b9ec-f4902abdc486 ro single rd.md=0 
 rd.lvm=0 rd.dm=0 SYSFONT=latarcyrheb-sun16 
 earlyprintk=serial,ttyS0,115200 console=ttyS0,115200 
 console=tty KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8 rhgb

But when I boot that kernel the 'single' parameter disappears 
(!):

 BOOT_IMAGE=/boot/vmlinuz-3.5.4-2.fc17.x86_64 
 root=UUID=dd8873f1-9cfd-4338-b9ec-f4902abdc486 ro rd.md=0 
 rd.lvm=0 rd.dm=0 SYSFONT=latarcyrheb-sun16 
 earlyprintk=serial,ttyS0,115200 console=ttyS0,115200 
 console=tty KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8 rhgb

When I boot my test kernel, it remains. How's that possible? 
Does the initrd modify the kernel command line?

When I boot the new kernel, the 'single' parameter is there and 
likely caused the problem.

Thanks,

	Ingo