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If you point pg_rewind to a server that is using synchronous replication, with "pg_rewind --source-server=...", and the replication is not working for some reason, pg_rewind will get stuck because it creates a temporary table, which needs to be replicated. You could call broken replication a pilot error, but pg_rewind is often used in special circumstances, when there are changes to the replication setup. We don't do any "real" updates, and we don't care about fsyncing or replicating the operations on the temporary tables, so fix that by setting synchronous_commit off. Michael Banck, Michael Paquier. Backpatch to 9.5, where pg_rewind was introduced. Discussion: <20161005143938.GA12247@nighthawk.caipicrew.dd-dns.de>
PostgreSQL Database Management System ===================================== This directory contains the source code distribution of the PostgreSQL database management system. PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings. PostgreSQL has many language interfaces, many of which are listed here: http://www.postgresql.org/download See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at http://www.postgresql.org/download/. For more information look at our web site located at http://www.postgresql.org/.