task/mds_thrash: don't drop exceptions from thrasher

Previously, when there was an exception in the thrasher
main loop, it would log it but ultimately "succeed"
the teuthology task.

Signed-off-by: John Spray <john.spray@redhat.com>

diff --git a/tasks/mds_thrash.py b/tasks/mds_thrash.py
index 75530f8a8efaca9aad82596f9a2b30007ca60b8d..7f9d9ade0d06ab4eb5b3e7327bc8431af9cf49a8 100644 (file)
--- a/tasks/mds_thrash.py
+++ b/tasks/mds_thrash.py
@@ -411,5 +411,6 @@ def task(ctx, config):
         for t in thrashers:
             log.info('join thrasher for failure group [{fg}]'.format(fg=', '.join(failure_group)))
             thrashers[t].stop()
+            thrashers[t].get()  # Raise any exception from _run()
             thrashers[t].join()
         log.info('done joining')