openSUSE 12.2 mgetty, systemd, dial-in server problem

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#1

Hi

Please help me.

I have openSUSE 11.3 x64, dial-in server, with the following settings:

/etc/mgetty+sendfax/mgetty.config

debug 4
speed 57600
port ttyACM0
debug 4
data-only y
init-chat “” \d\d\d+++\d\dATZ&K0&C1&D2 OK

/etc/mgetty+sendfax/login.config

/AutoPPP/ - a_ppp /usr/sbin/pppd -chap +pap login debug

  •   -       -       /bin/login @

/etc/mgetty+sendfax/dialin.config

disallow all other calls

#!all
all

/etc/ppp/options

38400
crtscts
modem
auth
lock
asyncmap 0
debug
kdebug 7
novj
novjccomp
lcp-echo-interval 30
lcp-echo-failure 0
lcp-restart 2
lcp-max-configure 30
refuse-chap
require-pap
nodetach

/etc/ppp/options.pptp

require-mppe

/etc/ppp/options.ttyACM0

192.168.0.43:192.168.0.44
netmask 255.255.255.0
modem
idle 2400

/etc/ppp/pap-secrets

myusername linux mypass64 “*”

/etc/inittab

10:2345:respawn:/usr/sbin/mgetty -n 1 -D /dev/ttyACM0

This is work is fine !!!

I installed the openSUSE 12.2 x64 with the same settings, except
instead of “inittab” “systemd” setting:

/lib/systemd/system/mgettyAM0.service

[Unit]
Description=mgetty start daemon
After=network.target

[Service]
Type=simple
User=root
Group=root
Restart=always
ExecStart=/usr/sbin/mgetty -n 1 -D /dev/ttyACM0
TimeoutSec=0

[Install]
WantedBy=multi-user.target

#systemctl enable mgettyACM0.service

restart system, but not work !!!

systemctl list-units -t service : OK mgettyACM0.service loaded active running

/var/log/mgetty.ttyACM0

10/16 20:47:03 CM0 mgetty: interim release 1.1.36-Jun15
10/16 20:47:03 CM0 check for lockfiles
10/16 20:47:03 CM0 locking the line
10/16 20:47:04 CM0 lowering DTR to reset Modem
10/16 20:47:04 CM0 send: \d\d\d+++\d\dATZ&K0&C1&D2[0d]
10/16 20:47:07 CM0 waiting for OK'' ** found ** 10/16 20:47:08 CM0 waiting... 10/16 20:47:46 CM0 wfr: waiting for RING’’
10/16 20:47:46 CM0 send: ATA[0d]
10/16 20:47:46 CM0 waiting for CONNECT'' ** found ** 10/16 20:48:05 CM0 send: 10/16 20:48:05 CM0 waiting for _’’ ** found **
10/16 20:48:38 ##### failed dev=ttyACM0, pid=5061, got signal 1, exiting

when restart systemd:

     systemctl stop mgettyACM0.service
     systemctl daemon-reload 
     systemctl start mgettyACM0.service
     systemctl daemon-reload

/var/log/messages containing this :

Oct 16 20:34:49 linux systemd[1]: mgettyACM0.service: main process exited, code=exited, status=10
Oct 16 20:34:49 linux systemd[1]: Unit mgettyACM0.service entered failed state.
Oct 16 20:34:49 linux systemd[1]: Reloading.

Any idea ? thanx

#2

signal 1 == SIGHUP, one reason is modem losing phone line. Is it normal and expected? Should mgetty exit in above case? By default sustemd assumes that main service process is there forever and if it terminates unexpectedly, something is wrong. So is mgetty supposed to exit here?

#3

To clarify my question. Is the problem that mgetty unexpectedly exits or that systemd thinks service failed in this case?

#4

On 2012-10-17 05:16, arvidjaar wrote:

> signal 1 == SIGHUP, one reason is modem losing phone line. Is it normal
> and expected? Should mgetty exit in above case? By default sustemd
> assumes that main service process is there forever and if it terminates
> unexpectedly, something is wrong. So is mgetty supposed to exit here?

With inittab, if mgetty exits, crashes, whatever, it is just restarted
(respawned).

–
Cheers / Saludos,

Carlos E. R.
(from 12.1 x86_64 “Asparagus” at Telcontar)

#5

Unit file has Restart=always which does the same.

#6

ok, but what is the equivalent of the respawn ?

#7

I think that systemd thinks service failed in this case. (?)

#8

You already have it. “Restart=always” means the same as “respawn” in /etc/inittab - always restart service when it is terminated.

I think [the problem is] that systemd thinks service failed in this case. (?)

Do you ask me? I do not know. Try to prefix command with “-”, it should ignore exit code:

ExecStart=-/usr/sbin/mgetty -n 1 -D /dev/ttyACM0
#9

THIS IS WORKING !

/lib/systemd/system/mgettyACM0.service

[Unit]
Description=mgettyACM0 daemon
After=network.target

[Service]
Type=simple
User=root
Group=root
ExecStart=-/usr/sbin/mgetty -n 1 -D /dev/ttyACM0
Restart=always
RestartSec=0
KillSignal=SIGHUP
KillMode=process

[Install]
WantedBy=multi-user.target

BUT, when connected the modem, the autoPPP not working.
The login.config containing:

Automatic PPP startup on receipt of LCP configure request (AutoPPP).

mgetty has to be compiled with “-DAUTO_PPP” for this to work.

How to compiled the mgetty with “-DAUTO_PPP” ???

( I tried to copy /usr/sbin/mgetty from version:11.3 to 12.2 and how it works for all.
I do not see this as the best solution. :P)

thanks for everything ( sorry my english )

#10

Please, open new thread for it. It is unrelated to your current issue.