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Without an explicit WAL filename, pg_waldump determines the segment size from the first WAL-named directory entry. A preallocated segment with an uninitialized header can make this fail before the checkpoint is read. Pass the WAL filename recorded in backup_label to avoid depending on directory enumeration order. Use command_like() so command failures and stderr are checked rather than appearing only as an empty-output mismatch. This was independently reported by Nazir Bilal Yavuz and Alexander Lakhin. Author: Nazir Bilal Yavuz <byavuz81@gmail.com> Reported-by: Nazir Bilal Yavuz <byavuz81@gmail.com> Reported-by: Alexander Lakhin <exclusion@gmail.com> Reviewed-by: Zsolt Parragi <zsolt.parragi@percona.com> Reviewed-by: Daniel Gustafsson <daniel@yesql.se> Discussion: https://postgr.es/m/CAN55FZ1Yak_xBqMaDQsD7atpBkGLEkF-DKXcs3nLHM1Uq4YRew%40mail.gmail.com Discussion: https://postgr.es/m/ffd837c5-dc22-4db1-a2d8-b623cbe9b30c@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.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.