Unix/Linux Go Back    


SuSE SUSE Linux is a major operating system. The developer rights are owned by Novell, Inc.

Starting mgetty with systemd?

SuSE


Closed    
 
Thread Tools Search this Thread Display Modes
    #1  
Old Unix and Linux 09-24-2014   -   Original Discussion by mrm5102
mrm5102's Unix or Linux Image
mrm5102 mrm5102 is offline
Registered User
 
Join Date: Jul 2012
Last Activity: 9 March 2018, 4:04 PM EST
Posts: 198
Thanks: 100
Thanked 11 Times in 10 Posts
Starting mgetty with systemd?

Hello All,

OS: openSUSE 13.1 (Bottle) (armv7hl)
uname -a: Linux linux.site 3.14.14-cubox-i #1 SMP Sat Sep 13 03:48:24 UTC 2014 armv7l armv7l armv7l GNU/Linux

So this is my first attempt at starting a service at boot with systemd. I've done this with inittab in the past,
but I'm having trouble getting mgetty to start during boot. If I check the status of mgetty.service I can see
that it failed, but there really isn't any useful debugging information there...

Here is the Status output:
*Does the word "disabled" and/or "inactive (dead)" in the message below mean it didn't even try to start it?


Code:
# systemctl status mgetty
mgetty.service - Smart Modem Getty(mgetty)
   Loaded: loaded (/usr/lib/systemd/system/mgetty.service; disabled)
   Active: inactive (dead)
     Docs: man:mgetty(8)

There is also no information in mgetty's log (*/var/log/mgetty.ttyACM0) for that device (*nor is there anything about
mgetty in /var/log/messages with today's date)
. It almost seems like systemd didn't even attempt to start mgetty.

But, I CAN start mgetty from the command line manually with "systemctl start mgetty.service" and then if I
check the staus again I can see it started up successfully...


Code:
# systemctl status mgetty
mgetty.service - Smart Modem Getty(mgetty)
   Loaded: loaded (/usr/lib/systemd/system/mgetty.service; disabled)
   Active: active (running) since Wed 2014-09-24 11:01:41 EDT; 4s ago
     Docs: man:mgetty(8)
 Main PID: 1711 (mgetty)
   CGroup: /system.slice/mgetty.service
           └─1711 /usr/sbin/mgetty -D -s 57600 -n 2 -m "" AT+VCID=1 /dev/ttyACM0

Sep 24 11:01:41 linux.site systemd[1]: Started Smart Modem Getty(mgetty).



Here is my "/usr/lib/systemd/system/mgetty.service"
File:


Code:
[Unit]
Description=Smart Modem Getty(mgetty)
Documentation=man:mgetty(8)
Requires=systemd-udev-settle.service
After=systemd-udev-settle.service

[Service]
Type=simple
ExecStart=/usr/sbin/mgetty -D -s 57600 -n 2 -m '"" AT+VCID=1' /dev/ttyACM0
Restart=always
PIDFile=/var/run/mgetty.pid.ttyACM0

[Install]
WantedBy=multi-user.target

Should I be seeing something in the /var/log/messages file if it did in fact attempt to start? And, since it starts successfully
when I start it manually with systemctl start it seems like maybe it's attempting to start too early, but I can't be sure
since there is no debugging/log information about it...

Any ideas what I can try here to get this started at boot?
Any thoughts or suggestions would be greatly appreciated...

Thanks in Advance,
Matt

---------- Post updated at 11:54 AM ---------- Previous update was at 11:16 AM ----------

Sorry, I think I figured it out....

After Googling around a bit more I found the option below for systemctl:


Code:
# systemctl is-enabled mgetty.service
disabled
# systemctl enable mgetty.service

After entering the "systemctl enable mgetty.service" command (*which printed out a "ln -s" command to STDOUT, but I don't remember
exactly what it linked to...)
, and re-running "systemctl status mgetty" I can see it says enabled now, instead of disabled like it was previously.

So I then rebooted and after I logged in and opened up a terminal and checked the status, it showed it was running... See below:


Code:
# systemctl status mgetty
mgetty.service - Smart Modem Getty(mgetty)
   Loaded: loaded (/usr/lib/systemd/system/mgetty.service; enabled)
   Active: active (running) since Tue 2014-07-08 00:00:22 EDT; 2 months 17 days ago
     Docs: man:mgetty(8)
 Main PID: 1110 (mgetty)
   CGroup: /system.slice/mgetty.service
           └─1110 /usr/sbin/mgetty -D -s 57600 -n 2 -m "" AT+VCID=1 /dev/ttyACM0

Jul 08 00:00:22 linux.site systemd[1]: Stopping Smart Modem Getty(mgetty)...
Jul 08 00:00:22 linux.site systemd[1]: Starting Smart Modem Getty(mgetty)...
Jul 08 00:00:22 linux.site systemd[1]: Started Smart Modem Getty(mgetty).

Not sure why it shows that it had to stop mgetty first (*any ideas why it would say that), but it seems to be working now...

Thanks,
Matt
Sponsored Links
Closed

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Linux More UNIX and Linux Forum Topics You Might Find Helpful
Thread Thread Starter Forum Replies Last Post
How to Send AT Commands to mgetty? mrm5102 UNIX for Dummies Questions & Answers 2 09-18-2014 12:55 PM
Systemd thailand UNIX for Advanced & Expert Users 1 05-09-2014 02:29 AM
Systemd hibernation is killing me lockheed Linux 1 11-16-2012 03:04 PM
Systemd Brandon9000 UNIX for Advanced & Expert Users 2 09-28-2012 02:00 PM
Linux systemd - Is it really required? admin_xor What is on Your Mind? 0 05-29-2012 03:34 PM



All times are GMT -4. The time now is 10:52 AM.