Comment 6 for bug 1538645

it turned out that fuel-agent does support interruption (SIGINT, but not SIGTERM).

moreover, it performs cleanup: kills all processes in chroot (if any), stops currently running process, and does all umounts and deletes all image leftovers from temporary directory as well.

So, fuel-agent itself is interrupt-able and doesn't need additional signal handlers.

Therefore, if astute needs to stop image building task (literally means to send SIGINT to fuel-agent process involved into image building), then it should do that without any worries.

Logs attached.

The last thing to asure is that processes in chroot will be killed as expected.