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streamed backup, throw an error and refuse to start up. The restore has not finished correctly in that case and the data directory is possibly corrupt. We already errored out in case of archive recovery, but could not during crash recovery because we couldn't distinguish between the case that pg_start_backup() was called and the database then crashed (must not error, data is OK), and the case that we're restoring from a backup and not all the needed WAL was replayed (data can be corrupt). To distinguish those cases, add a line to backup_label to indicate whether the backup was taken with pg_start/stop_backup(), or by streaming (ie. pg_basebackup). This requires re-initdb, because of a new field added to the control file.
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. Changes between all PostgreSQL releases are recorded in the file HISTORY. 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/.