Bug Fixes:

• Fix issue with adhoc expiration when no backups in a repository. (Reviewed by Stefan Fercot. Reported by Anup Gupta.)

Features:

• Add restore progress to info command output. (Contributed by Denis Garsh, Maxim Michkov. Reviewed by David Steele.)
• Add progress-only detail level for info command output. (Contributed by Denis Garsh. Reviewed by David Steele, Stefan Fercot.)

Improvements:

• Retry failed reads on object stores. (Reviewed by David Christensen.)
• Fix defaults in command-line help. (Reviewed by David Christensen, Chris Bandy.)

Documentation Improvements:

• Describe discrete option values in a list where appropriate. (Contributed by Anton Kurochkin. Reviewed by David Steele.)
• Fix "less than" in help output for archive-mode option. (Contributed by Anton Kurochkin. Reviewed by David Steele.)

Bug Fixes:

• Revert "calculate content-md5 on S3 only when required". (Reviewed by David Christensen. Reported by Frank Brendel.)
• Fix lower bounds checking for option keys. (Reviewed by David Christensen, Wolfgang Walther. Reported by Wolfgang Walther.)

Bug Fixes:

• Fix block incremental restore issue on non-default repository. (Reviewed by David Christensen, Aleksander Łukasz. Reported by Aleksander Łukasz.)
• Do not set recovery_target_timeline=current for PostgreSQL < 12. (Reviewed by Stefan Fercot.)
• Fix expire archive range logging. (Reviewed by Stefan Fercot. Reported by Aleš Zelený.)
• Fix error reporting for queries with no results. (Reviewed by Stefan Fercot. Reported by Susantha Bathige.)

Features:

• Verify recovery target timeline. (Reviewed by Stefan Fercot.)
• Allow verification of a specified backup. (Contributed by Maxim Michkov. Reviewed by David Steele.)
• Add support for S3/GCS requester pays. (Contributed by Timothée Peignier. Reviewed by David Steele.)
• PostgreSQL 18 experimental support. (Reviewed by Stefan Fercot.)
• Allow connections to PostgreSQL on abstract domain sockets. (Reviewed by Chris Bandy. Suggested by Chris Bandy.)
• Add numeric output to version command. (Contributed by Stefan Fercot. Reviewed by David Steele.)

Improvements:

• Allow backup command to operate on remote repositories. (Reviewed by Stefan Fercot.)
• Use lz4 for protocol compression. (Reviewed by Stefan Fercot.)
• Calculate content-md5 on S3 only when required. (Reviewed by David Christensen.)
• Warn when a value for a multi-key option is overwritten. (Reviewed by David Christensen, Stefan Fercot.)
• Add detail logging for expired archive path. (Contributed by Stefan Fercot. Reviewed by David Steele.)
• Remove support for PostgreSQL 9.4. (Reviewed by Stefan Fercot.)
• Remove autoconf/make build. (Reviewed by David Christensen.)

Documentation Improvements:

• Fix documentation for specifying multiple stanzas with tls-server-auth. (Reviewed by David Christensen, Stefan Fercot. Suggested by Terry MacAndrew.)
• Clarify incremental backup expiration. (Reviewed by Stefan Fercot.)
• Clarify requirement for local/remote pgBackRest versions to match. (Contributed by Greg Clough. Reviewed by David Steele.)
• Add FAQ about exporting self-contained cluster. (Contributed by Stefan Fercot. Reviewed by David Steele.)
• Caveat --tablespace-map-all regarding tablespace creation. (Reviewed by Stefan Fercot, Christophe Courtois. Suggested by Christophe Courtois.)
• Clarify behavior of --repo-retention-full-type. (Reviewed by Antoine Beaupré. Suggested by Antoine Beaupré.)
• Change --process-max recommendation for object stores to --repo-bundle. (Reviewed by Stefan Fercot.)
• Update unix_socket_directory to unix_socket_directories. (Contributed by hyunkyu han. Reviewed by David Steele.)
• Recommend not placing spool-path within pg_xlog/pg_wal. (Reviewed by Martín Marqués, Don Seiler. Suggested by Martín Marqués.)

Bug Fixes:

• Fix issue after disabling bundling with block incremental enabled. (Reviewed by David Christensen.)

Documentation Improvements:

• Clarify behavior of multiple configuration files. (Reviewed by Paul Bierly. Suggested by Paul Bierly.)

Bug Fixes:

• Fix issue with version/help commands attempting to load pgbackrest.conf. (Reviewed by Stefan Fercot. Reported by Bradford Boyle, Julian.)

Test Suite Improvements:

• Stabilize async archiving in integration tests. (Contributed by Viktor Kurilko. Reviewed by David Steele.)

NOTE TO PACKAGERS: This is last feature release to support the autoconf/make build. Please migrate to meson if you have not already done so. 2.54.X patch releases (if any) will continue to support autoconf/make.

Bug Fixes:

• Fix PostgreSQL query performance for large datasets. (Fixed by Thibault Vincent, David Steele. Reviewed by David Christensen, Antoine Millet. Reported by Antoine Millet.)

Features:

• Allow repositories on versioned storage to be read at a target time. (Reviewed by Stefan Fercot, David Christensen.)
• Allow requested standby backup to proceed with no standby. (Reviewed by Stefan Fercot.)

Improvements:

• Summarize backup reference list for info command text output. (Contributed by Stefan Fercot. Reviewed by David Steele.)
• Refresh web-id token for each S3 authentication. (Contributed by Brent Graveland. Reviewed by David Steele.)
• Correctly display current values for indexed options in help. (Reviewed by David Christensen.)
• Save backup.info only when contents have changed. (Reviewed by Stefan Fercot.)
• Remove limitation on reading files in parallel during restore. (Reviewed by David Christensen.)
• Improve SFTP error messages. (Contributed by Reid Thompson. Reviewed by David Steele.)

Documentation Features:

• Add performance tuning section to user guide. (Reviewed by Stefan Fercot.)

Documentation Improvements:

• Clarify source for data_directory. (Contributed by Stefan Fercot. Reviewed by David Steele. Suggested by Matthias.)
• Better logic for deciding when a summary should be lower-cased. (Suggested by Daniel Westermann.)

Bug Fixes:

• Fix permissions when restore run as root user. (Reviewed by Stefan Fercot. Reported by Will M.)
• Fix segfault on delayed connection errors. (Reviewed by David Christensen. Reported by Anton Glushakov.)
• Skip local repository duplicate check for SFTP. (Fixed by Reid Thompson. Reviewed by David Steele. Reported by Anton Kurochkin.)

Improvements:

• PostgreSQL 17beta3 support.

IMPORTANT NOTE: The log-level-stderr option default has been changed from warn to off. This makes it easier to capture errors when only redirecting stdout. To preserve the prior behavior set log-level-stderr=warn.

NOTE TO PACKAGERS: The lz4 library is now required by the meson build.

NOTE TO PACKAGERS: Compiler support for __builtin_clzl() and __builtin_bswap64() is now required by the meson build.

Bug Fixes:

• Fix SFTP renaming failure when file already exists. (Fixed by Reid Thompson. Reviewed by David Steele. Reported by ahmed112212.)

Features:

• Allow backups to run concurrently on different repositories. (Reviewed by Reid Thompson, Stefan Fercot.)
• Support IP-based SANs for TLS certificate validation. (Contributed by David Christensen. Reviewed by David Steele.)

Improvements:

• Default log-level-stderr option to off. (Reviewed by Greg Sabino Mullane, Stefan Fercot.)
• Allow alternative WAL segment sizes for PostgreSQL ≤ 10. (Contributed by Viktor Kurilko. Reviewed by David Steele.)
• Add hint to check SFTP authorization log. (Contributed by Vitalii Zurian. Reviewed by Reid Thompson, David Steele.)

Documentation Improvements:

• Clarify archive-push multi-repo behavior. (Reviewed by Stefan Fercot.)

Bug Fixes:

• Fix issue with files larger on the replica than on the primary. (Reviewed by Stefan Fercot. Reported by Nicolas Lassimonne.)

NOTE TO PACKAGERS: The build system for pgBackRest is now meson. The autoconf/make build will not receive any new features and will be removed after a few releases.

Features:

• Add GCS batch delete support. (Reviewed by Reid Thompson.)
• S3 SSE-C encryption support. (Reviewed by Tim Jones. Suggested by Tim Jones.)
• PostgreSQL 17 support. (Reviewed by Stefan Fercot.)

Improvements:

• Allow explicit disabling of optional dependencies in meson builds. (Contributed by Michael Schout. Reviewed by David Steele.)
• Dynamically find python in meson build. (Contributed by Michael Schout. Reviewed by David Steele.)
• Tag pgbackrest build target in meson as installable. (Contributed by Bradford Boyle. Reviewed by David Steele.)

Documentation Improvements:

• Update start/stop documentation to reflect actual functionality. (Reviewed by Stefan Fercot.)