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Three LOG messages are added in the recovery code paths, providing information that can be useful to track corruption issues depending on the state of the cluster, telling that: - Recovery has started from a backup_label. - Recovery is restarting from a backup start LSN, without a backup_label. - Recovery has completed from a backup. This was originally applied on HEAD as of 1d35f705e191, and there is consensus that this can be useful for older versions. This applies cleanly down to 15, so do it down to this version for now (older versions have heavily refactored the WAL recovery paths, making the change less straight-forward to do). Author: Andres Freund Reviewed-by: David Steele, Laurenz Albe, Michael Paquier Discussion: https://postgr.es/m/20231117041811.vz4vgkthwjnwp2pp@awork3.anarazel.de Backpatch-through: 15
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: https://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 https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.