Unmount of $FAI_ROOT/fai after self-written tasks

[Michael Schindler]

Hello,

I am trying to execute self-written tasks similar to the softupdate
capability in fai 2.8.3.
There is one thing I noticed:

In the beginning of the fai run, the configuration space (/fai in my
case) is mounted.
Then, the self-written task is executed from there (/fai/hooks/mytask)
This self-written task cannot unmount the /fai because it is still using it.
(The task_softupdate is able to unmount after everything is done
because it does not reside in /fai itself)

As a result, I get an error message at the end of the fai run:
umount: /fai: device is busy
(I get it twice, why?)

Many thanks,
  Michael

-- 
Michael Schindler
  Theoretische Physik I
  Universität Augsburg
  86135 Augsburg