Hi,
currently pg_basebackup uses fetch mode when only -x is specified -
which imo isn't a very good thing to use due to the increased risk of
not fetching everything.
How about switching to stream mode for 9.5+?
Greetings,
Andres Freund
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Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services