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

[Ingo Molnar]

* Tom Gundersen <teg at jklm.no> wrote:

> Hi Ingo,
> 
> On Thu, Oct 4, 2012 at 11:12 AM, Ingo Molnar <mingo at kernel.org> wrote:
> > I'm wondering how to debug the following systemd problem:
> 
> [...]
> 
> > Here are the units that are showing some sort of error:
> >
> > lyra:~> systemctl --all | grep -i err
> > exim.service              error  inactive dead          exim.service
> > iscsi.service             error  inactive dead          iscsi.service
> > iscsid.service            error  inactive dead          iscsid.service
> > livesys-late.service      error  inactive dead          livesys-late.service
> > livesys.service           error  inactive dead          livesys.service
> > named.service             error  inactive dead          named.service
> > postfix.service           error  inactive dead          postfix.service
> > remount-rootfs.service    error  inactive dead          remount-rootfs.service
> > ypserv.service            error  inactive dead          ypserv.service
> 
> You might get useful information from:
> 
> # systemctl status remount-rootfs.service
> 
> (and similarly for the other ones).

Querying those gives me the following uninformative output:

[root at lyra ~]# systemctl status $(systemctl --all | grep error | cut -d' ' -f1)
exim.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


iscsi.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


iscsid.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


livesys-late.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


livesys.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


named.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


postfix.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


remount-rootfs.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)


ypserv.service
	  Loaded: error (Reason: No such file or directory)
	  Active: inactive (dead)

[root at lyra ~]# 

Trying to start it again gives:

[root at lyra ~]# systemctl start remount-rootfs.service
Failed to issue method call: Unit remount-rootfs.service failed 
to load: No such file or directory. See system logs and 
'systemctl status remount-rootfs.service' for details.

neither system logs nor 'systemctl status 
remount-rootfs.service' tells us anything.

Thanks,

	Ingo