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pg_basebackup now has a --target=TARGET[:DETAIL] option. If specfied, it is sent to the server as the value of the TARGET option to the BASE_BACKUP command. If DETAIL is included, it is sent as the value of the new TARGET_DETAIL option to the BASE_BACKUP command. If the target is anything other than 'client', pg_basebackup assumes that it will now be the server's job to write the backup in a location somehow defined by the target, and that it therefore needs to write nothing locally. However, the server will still send messages to the client for progress reporting purposes. On the server side, we now support two additional types of backup targets. There is a 'blackhole' target, which just throws away the backup data without doing anything at all with it. Naturally, this should only be used for testing and debugging purposes, since you will not actually have a backup when it finishes running. More usefully, there is also a 'server' target, so you can now use something like 'pg_basebackup -Xnone -t server:/SOME/PATH' to write a backup to some location on the server. We can extend this to more types of targets in the future, and might even want to create an extensibility mechanism for adding new target types. Since WAL fetching is handled with separate client-side logic, it's not part of this mechanism; thus, backups with non-default targets must use -Xnone or -Xfetch. Patch by me, with a bug fix by Jeevan Ladhe. The patch set of which this is a part has also had review and/or testing from Tushar Ahuja, Suraj Kharage, Dipesh Pandit, and Mark Dilger. Discussion: http://postgr.es/m/CA+TgmoaYZbz0=Yk797aOJwkGJC-LK3iXn+wzzMx7KdwNpZhS5g@mail.gmail.com
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/.