Shutdown server and wait till the connection is down with ansible

When executing something like "ansible all -m command -a "shutdown now" --ask-pass -b" on ubuntu server 16 ansible will power off the machine, but return the error 

192.168.0.2 | FAILED | rc=0 >>
MODULE FAILURE                          

The solution is to add the delay before shutdown command using shell module and sleep.

shutdown.yml:
 
---
- hosts: all
  tasks:
  - name: shutdown
    shell: nohup bash -c "sleep 2s && shutdown now" &
    async: 0
    poll: 0
    ignore_errors: true
    become: true

  - name: wait for server power off
    local_action: wait_for host="{{ inventory_hostname }}"
      state=stopped port=22 delay=10 timeout=300
    become: false

Wait for server fower off task will check that at least ssh on the host is down. But it will not notify if shutdown itself hangs.

Test direct show seeking

How to test that DirectShow seeking do not crash or hang your filter? You can use AutoIt and graphstudionext seek menu to seek to the troublesome position.