ed308d7837
An offline cluster can now work with more modes in pg_checksums: - --enable enables checksums in a cluster, updating all blocks with a correct checksum, and updating the control file at the end. - --disable disables checksums in a cluster, updating only the control file. - --check is an extra option able to verify checksums for a cluster, and the default used if no mode is specified. When running --enable or --disable, the data folder gets fsync'd for durability, and then it is followed by a control file update and flush to keep the operation consistent should the tool be interrupted, killed or the host unplugged. If no mode is specified in the options, then --check is used for compatibility with older versions of pg_checksums (named pg_verify_checksums in v11 where it was introduced). Author: Michael Banck, Michael Paquier Reviewed-by: Fabien Coelho, Magnus Hagander, Sergei Kornilov Discussion: https://postgr.es/m/20181221201616.GD4974@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: 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/.