Increase POLL interval to avoid race with check_kdump #288
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This commit increases the default value of 'POLL' from 30s to 45s.
The reason is that the check_kdump functionality has an internal hard-coded timeout of 30s and this may induce race conditions if POLL is set to the same value.
A warning has been added to make sure users are notified if POLL=30s.
Finally, we take the chance to normalize the retcode for bmh_fencing.