[systemd-devel] Missing forked processes in 'systemctl status'

[Leonid Isaev]

Hi,

On Wed, Aug 13, 2014 at 03:29:40PM +0200, Lennart Poettering wrote:
> On Mon, 11.08.14 13:22, Leonid Isaev (lisaev at umail.iu.edu) wrote:
> 
> > Hi,
> > 
> > 	I am seeing an oddity in the CGroup output of systemctl status ran on
> > some units. On the other hand, systemd-cgls shows correct information.
> > 	Here is an example:
> > ------
> > $ systemctl status netctl at wan.service
> >   netctl at wan.service - DHCP connection on bond0
> >    Loaded: loaded (/etc/systemd/system/netctl at wan.service; enabled)
> >    Active: active (exited) since Mon 2014-08-11 11:51:05 EDT; 1h 20min ago
> >      Docs: man:netctl.profile(5)
> >   Process: 645 ExecStart=/usr/lib/network/network start %I (code=exited, status=0/SUCCESS)
> >  Main PID: 645 (code=exited, status=0/SUCCESS)
> > 
> > $ systemctl status netctl at wlan.service 
> >   netctl at wlan.service - Secure wireless uplink
> >    Loaded: loaded (/etc/systemd/system/netctl at wlan.service; enabled)
> >    Active: active (exited) since Mon 2014-08-11 11:50:58 EDT; 1h 16min ago
> >      Docs: man:netctl.profile(5)
> >   Process: 489 ExecStart=/usr/lib/network/network start %I (code=exited, status=0/SUCCESS)
> >  Main PID: 489 (code=exited, status=0/SUCCESS)
> >    CGroup: /system.slice/system-netctl.slice/netctl at wlan.service
> >            501 wpa_supplicant -B -P /run/wpa_supplicant_wlp3s0.pid -i
> >   wlp3s..
> 
> When you use "systemctl -p ControlGroup show" on the two services, do
> they both show valid cgroup paths?

No.
------
$ systemctl show netctl at wlan.service | grep -i controlgroup
ControlGroup=/system.slice/system-netctl.slice/netctl at wlan.service
$ systemctl show netctl at wan.service | grep -i controlgroup
<nothing>
------

> 
> What's the Type= of the units?

netclt at .service is Type=oneshot:
------
$ cat /usr/lib/systemd/system/netctl at .service 
[Unit]
Description=Networking for netctl profile %I
Documentation=man:netctl.profile(5)
Before=network.target netctl.service
Wants=network.target

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStart=/usr/lib/network/network start %I
ExecStop=/usr/lib/network/network stop %I
KillMode=none
------

Thanks,
-- 
Leonid Isaev
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