7638ec548a
The comment about all-zero pages created by smgrzeroextend() sounded much scarier than the reality. In fact trying to encrypt these all-zero pages might not only be a waste of CPU cycles but also could decrease security by making us re-use the same IV first with all zeros and then with the actual data. And the extra amount of protection we gain from encrypting them is minuscule since they are only added at the end of the table, soon overwritten and only gives the attacker a very slightly more accurate table size.
Percona Server for PostgreSQL
Percona Server for PostgreSQL is a free, enhanced, fully compatible, open source, drop-in replacement for the PostgreSQL Database Management System with enterprise-grade features. It requires no changes to PostgreSQL applications or code.
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 Percona Server for PostgreSQL can be found at https://docs.percona.com/postgresql/17/. In particular, information about building PostgreSQL from the source code can be found at https://docs.percona.com/postgresql/17/installing.html.
Submit a bug report or a feature request
If you find a bug in Percona Server for PostgreSQL, you can submit a report to the project's Jira issue tracker
As a general rule of thumb, please try to create a bug report that is:
Reproducible - include the steps on how to reproduce the issue
Specific - include as much detail as possible, such as which version, which environment, etc.
Unique - do not duplicate existing tickets
Scoped to a single issue - only one issue per report