ad569b54a1
When faced with a relation containing more than 1 physical segment (i.e. >1GB, with normal settings), the previous code could compute a truncation block length greater than RELSEG_SIZE, which could lead to restore failures of this form: file "%s" has truncation block length %u in excess of segment size %u The fix is simply to clamp the maximum computed truncation_block_length to RELSEG_SiZE. I have also added some comments to clarify the logic. The test case was written by Oleg Tkachenko, but I have rewritten its comments. Reported-by: Oleg Tkachenko <oatkachenko@gmail.com> Diagnosed-by: Oleg Tkachenko <oatkachenko@gmail.com> Co-authored-by: Robert Haas <rhaas@postgresql.org> Co-authored-by: Oleg Tkachenko <oatkachenko@gmail.com> Reviewed-by: Amul Sul <sulamul@gmail.com> Backpatch-through: 17 Discussion: http://postgr.es/m/00FEFC88-EA1D-4271-B38F-EB741733A84A@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/17/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/17/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/.