Bug 149237 – hamachi-0.9.9.9_p20-r2 occasionally hangs when stopping daemon

• Product: Gentoo Linux
• Status: RESOLVED WORKSFORME

[Description Michael Ploujnikov 2006-09-26 15:48:53 UTC]

I have noticed, on multiple occasions (but not every shutdown/reboot), that during a shutdown, Hamachi's init script does not terminate and it just hangs there after printing:
 * Stopping hamachi ... 
This of course hangs my shutdown/reboot procedure.
I checked hamachi's log and I set start-stop-daemon to be verbose but that didn't help me get any info at all as to what is going on during the "stopping" phase and why it is hanging.

I also tried `while true; do /etc/init.d/hamachi restart; done` while the system was running, but so far haven't even been able to re-produce the problem.

[Comment 1 Caleb Tennis (RETIRED) 2006-09-27 03:30:05 UTC]

do you have anything actively talking over hamachi when it's trying ot shutdown?  I'm wondering if the daemon won't shutdown as long as traffic is flowing.

[Comment 2 Michael Ploujnikov 2006-09-27 09:31:00 UTC]

Nothing that I'm aware of is using the hamachi network when I'm shutting down.
I tried constantly pinging a host on my hamachi network while I was running `/etc/init.d/hamachi restart` and the init script successfully stopped and started the service. I also tried restarting hamachi with some VNC traffic and got the same results.

[Comment 3 Michael Kedzierski 2006-10-11 17:52:13 UTC]

Hi, I am also experiencing the same problem, it happened the first time I tried to restart after having installed hamachi. I haven't performed a second shutdown yet, so I'm uncertain as to whether this happens intermittently or not.

I'll have a poke around at it though.

[Comment 4 Caleb Tennis (RETIRED) 2006-11-03 07:53:27 UTC]

Maybe we need to send it a different signal to stop from start-stop-daemon?

Does it help if we add a "-s 2" or "-s 1" to the start-stop-daemon line that stops the service?

[Comment 5 Caleb Tennis (RETIRED) 2006-11-03 07:55:24 UTC]

der, ignore that.

I'm curious though, is it hanging on the logout command or the stop command in the stop portion?

[Comment 6 Michael Ploujnikov 2006-11-03 09:10:45 UTC]

After adding print statements 
to /etc/init.d/hamachi, before

/usr/bin/hamachi -c $CONFDIR logout &>${LOG}

and

/usr/bin/hamachi -c $CONFDIR stop &>${LOG}

lines

and executing

/etc/init.d/hamachi stop

it appears that it hangs during the stopping stage.

This also shows that I was able to re-produce the hang without initiating a system shutdown.

On a separate note:
I have a hunch that this has something to do with the state of the network(s) that my hamachi client is connected to. I didn't test this at all, but it seems like this hang only happens after I re-connect another client on one of my private networks.

[Comment 7 Caleb Tennis (RETIRED) 2007-07-31 14:11:45 UTC]

never been able to reproduce.  closing as a worksforme.