screen commandline tool bugged?

[eldamir]

Hi guys,

this problem is not strictly linux related, but I seem to find a lot of my answers here, so I figured it was a great place to ask. anyway:

I have a Minecraftserver running on my server. The server is setup with the ubuntu 10.04 LTS Desktop installation.

I am maintaining my minecraftserver by ssh'ing to the server and having the MC server run in a screen session.

I've started the screen as such:

screen -S mc java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui

my problem is this:
When i want to restart the server for various reasons, i connect to the session by typing

screen -r mc

Upon gaining access i type

stop

to have the MC server save and close. This also closes the screen session window.

now my trouble is, that when i try to create the session again, all i get is the message

[Screen is terminating]

I tried typing 'screen -ls' to see if the session was still running. I've tried 'killall -9 screen' to be certain. Still i only get that annoying message.

I tried creating the screen session from another user, which worked, but only until trying to restart the session. Then same problem.

Incidently, i sortof solved it by reinstalling screen altogether, but that is hardly the proper solution.

If anyone would offer an idea to why this message appears and how to fix it, i'd be most appreciative

[Rubberman]

So what changed between when it worked as expected, and then started to not work as expected?

[eldamir]

with a clean install of screen, I can open all the sessions I want. However, when i close the session running minecraft, i cannot open or connect to any session, but only get the message [Screen is terminating] ... upon reinstalling screen, it works again until i close the minecraft session...

[Rubberman]

with a clean install of screen, I can open all the sessions I want. However, when i close the session running minecraft, i cannot open or connect to any session, but only get the message [Screen is terminating] ... upon reinstalling screen, it works again until i close the minecraft session...

I understand that, but it seemed from your earlier post that this was not originally the case. So, again, I have to ask what changed?

[eldamir]

I may have misspoken then. This was originally the case. Was like that on my first try

[Rubberman]

Ok. Thanks for the clarification. I'll have to some codgertating on this.

[BrianMicek]

Hi, I think I understand your problem. The problem is the screen parent process is terminating which will end your session.
Try this ... try starting screen like you did before, but just do this:

[root@bmicek ~]# screen -S myScreen

Okay, now in your (new) bash shell, start minecraft with your java command. To leave the screen session, detach with ^a^d (control + a control + d). Now to attach to your screen session later, use:

[root@bmicek ~]# screen -x myScreen

To leave the session, enter ^a^d like before

[alf55]

Since you put the command on the screen command line, the screen ends when the command ends. You really wish to create a screen and then enter the screen to run the command.

screen -dmS mc
screen -r mc
java -Xmx1024M -Xms1024M -jar minecraft_server.jar nogui
control-ad

The "control-ad" is a "control-a" followed by a "d".

[eldamir]

The problem is the screen parent process is terminating which will end your session.

That makes perfect sense, actually

Okay, now in your (new) bash shell, start minecraft with your java command. To leave the screen session, detach with ^a^d (control + a control + d). Now to attach to your screen session later, use:

I'll try that out as soon as i get the chance and report back on my success

[eldamir]

Works like a dream thanks Brian and the rest of y'all