428a2609ef
Attempting to use pg_checksums (pg_verify_checksums in 11) on a data folder which includes tablespace paths used across multiple major versions would cause pg_checksums to scan all directories present in pg_tblspc, and not only marked with TABLESPACE_VERSION_DIRECTORY. This could lead to failures when for example running sanity checks on an upgraded instance with --check. Even worse, it was possible to rewrite on-disk pages with --enable for a cluster potentially online. This commit makes pg_checksums skip any directories not named TABLESPACE_VERSION_DIRECTORY, similarly to what is done for base backups. Reported-by: Michael Banck Author: Michael Banck, Bernd Helmle Discussion: https://postgr.es/m/62031974fd8e941dd8351fbc8c7eff60d59c5338.camel@credativ.de backpatch-through: 11
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/.