For AIO the completion of a read into shared buffers (i.e. verifying the page including the checksum, updating the BufferDesc to reflect the IO) can happen in a different backend than the backend that started the IO. As ignore_checksum_failure can differ between backends, we need to allow the caller of PageIsVerified() control whether to ignore checksum failures. The commit leaves a gap in the PIV_* values, as an upcoming commit, which depends on this commit, will add PIV_LOG_LOG, which better fits just after PIV_LOG_WARNING. Reviewed-by: Noah Misch <noah@leadboat.com> Discussion: https://postgr.es/m/20250329212929.a6.nmisch@google.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/.