Thanks for the information. Indeed, lxc-stop -k still works by talking to the lxc monitor. What appears to have happened here is that the monitor itself is frozen.
Could you please show full output of: ps -ef Then do 'ps -ef | grep lxc-start' to find the lxc-start process for the hung container. In one terminal do sudo strace -f -odebug.out -p $pid where $pid is the process id of the lxc-start. Then in another terminal again do lxc-stop -n $container -k and attach the file debug.out to this report. ** Changed in: lxc (Ubuntu) Status: Invalid => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1261338 Title: lxc-stop and even lxc-stop -k can hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1261338/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs