Hi,

I'm trying to run some android tests using multi-node API. In order to
make sure both nodes of the multi-node job are in known state I'm
using lava-wait test_started/test_finished signals to sync between
nodes. Signals are prefixed so they identify host-target
lava-test-shell pairs with unique names. This works well when there is
only one test scheduled in a job. If anything goes wrong, the worst
case is tests will time out. However in case there are more tests
scheduled in a single job, the flow control sometimes fails. It
happens when lava-test-shell times out on one node. In this scenario
I'm doing:

1. host (wait for test_started from target)
2. target -> test_started -> host

Tests are executed...

3. target (wait for test_finished from host)
4. time out on host

So in this scenario target waits for the test_finished signal and
eventually times out as well (as the signal never comes). At the same
time host node already starts executing next lava-test-shell when it
waits for test_started signal from target. So nodes go out of sync and
the job produces no results. Is there any way to avoid such situation?

Best Regards,
milosz

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