Web Hosting Talk : Web Hosting Main Forums : VPS Hosting : getty / hvc0 on Xen but not OpenVZ

[vpswing]

Hi,

I've 2 "nearly identical VPS" (from the provider) both running Ubuntu 10.04, one is a Xen, another OpenVZ.

I noticed that when I issued 'ps aux' - the Xen listed a whole lot of processes which I don't see in OpenVZ - is this normal?

Also, in the /etc/init/ folder - there are 46 different config files (in the Xen) compared to only 18 (in OpenVZ)

ps ax on the Xen will show all the ttys, e.g.

  405 tty4     Ss+    0:00 /sbin/getty -8 38400 tty4
  407 tty5     Ss+    0:00 /sbin/getty -8 38400 tty5
  411 tty2     Ss+    0:00 /sbin/getty -8 38400 tty2
  412 tty3     Ss+    0:00 /sbin/getty -8 38400 tty3
  415 tty6     Ss+    0:00 /sbin/getty -8 38400 tty6
  489 tty1     Ss+    0:00 /sbin/getty -8 38400 tty1
22142 ?        Ss     0:00 /sbin/getty -8 38400 hvc0

But non on the OpenVZ.

And there is an "error" that is really bugging me, i.e.

--------
Jul 6 02:46:26 srv1 init: hvc0 main process (21769) terminated with status 1
Jul 6 02:46:26 srv1 init: hvc0 main process ended, respawning

Jul 6 02:46:36 srv1 init: hvc0 main process (21771) terminated with status 1
Jul 6 02:46:36 srv1 init: hvc0 main process ended, respawning

-------------

That error is being logged every 10 seconds in /var/log/syslog

Any idea why?

What is this 'hvc0' ?

Can I safely remove the /etc/init/hvc0.conf file?
I assume that will stop the respawning of the hvc0

Many thanks!

[EDIS]

I noticed that when I issued 'ps aux' - the Xen listed a whole lot of processes which I don't see in OpenVZ - is this normal?

Yes, since OpenVZ does not run it's own Kernel enviroment.

Also, in the /etc/init/ folder - there are 46 different config files (in the Xen) compared to only 18 (in OpenVZ)

Again: OpenVZ does not need any Kernel related services there.

But non on the OpenVZ.

Yet again the Kernel....

Can I safely remove the /etc/init/hvc0.conf file?

No, but comment everything out in it and restart the VPS, that will stop the process from spawning.

William

[vpswing]

Hi William,

Thanks for the reply. Currently, my hvc0.conf shows:

-------------------
start on stopped rc RUNLEVEL=[2345]
stop on runlevel [!2345]

respawn
exec /sbin/getty -8 38400 hvc0
----------------

So, I just comment out everything, like:

------------------------
#start on stopped rc RUNLEVEL=[2345]
#stop on runlevel [!2345]

#respawn
#exec /sbin/getty -8 38400 hvc0
-----------------

Or just comment out the "respawn" line?

Many thanks!