Q: How to "freeze" LTSP sessions - and unfreeze later.
know that situation? You want to explain something that would last only
2 minutes - if not you had to detach 25 pupils from "their" computer
If one could only halt their sessions - so they won't be distracted for
the next 2 minutes.
I tried out several things, one worked: Assuming _you_ are on a
workstation and pupils use thin clients, log in to ltspserver and
"ifdown" eth0 (presuming eth0 has the 192-net).
At once, all thin clients freeze. Alas, after some time, an ifup of eth0
doesn't reactivate the sessions - they are timed out and closed (as
opposed to nx sessions BTW).
Is there any other services that I could use to have the same effect?
Maybe just start a process with real time priority?