[systemd-devel] Reboot hangs at the very last step

[Frank Steiner]

Hi,

on some of our servers (all of those are NFS-servers with iscsi devices...)
rebooting sometimes hangs after

[  OK  ] Reached target Shutdown.

The next line, the kernel mesage about resetting the system, never
shows up. Is there a way to figure out what systemd is waiting for 
at this point?

I tried the debug shell with a while-true loop doing "systemctl list-jobs",
but the last output I get before the debug shell itself hangs looks quite 
ok (see screenshot).

On one server I can reliably trigger the hang: I removed iscsi.service
so the iscsi-mounts in /etc/fstab timeo ut during the boot. After the
server has come up, I manually activate the iscsi-devices with iscsiadm,
then run "vgchange -ay", then reboot the server, and it hangs.
Without manually activating the devices or if iscsi.service is there 
during boot, the server will reboot fine.

Unfortunately, when I add  "systemd.log_level=debug" the server will
even reboot in the scenario that otherwise triggers the hang :-(

cu,
Frank



-- 
Dipl.-Inform. Frank Steiner   Web:  http://www.bio.ifi.lmu.de/~steiner/
Lehrstuhl f. Bioinformatik    Mail: http://www.bio.ifi.lmu.de/~steiner/m/
LMU, Amalienstr. 17           Phone: +49 89 2180-4049
80333 Muenchen, Germany       Fax:   +49 89 2180-99-4049
* Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. *
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