Implemented remote incremental restore via the send-backup command with the -I/--incremental-mode option. For more details, refer to the Remote Restore section.

Changed the default buffer size (the --buffer-size option) to 128KB, improving performance when working with SFTP and remote storage.

Fixed TDE support for backup to a remote server. Page validation is now correctly skipped for encrypted data.

Fixed a buffer overflow detection issue that occurred during backup creation.

Fixed incorrect thread termination on error in DIRECT mode.

Fixed performance degradation during PTRACK backup creation in PRO and DIRECT modes.

Fixed position tracking of replication slots to ensure timely removal of archived WAL files.

Fixed incorrect handling of the zstd compression algorithm during WAL archiving by adding a custom zstd iostreams filter.

Fixed the “Attempt to write more than uint32_t::max” error which occurred when using the --with-file-map option with large amounts of data in mapping files.

Fixed recovery with excluded tablespaces. The pg_tblspc directory is no longer restored when excluded, which also resolves WAL validation errors.

Added support for Shardman on s390x, including the following fixes and improvements:

Improved S3 integration:

Fixed an issue where an SFTP session could remain open on file write errors. The session is now properly closed at the end of the operation.

Improved SFTP error messages for better diagnostics of remote operation issues.

Added support for the pglz compression algorithm to extend compatibility with various Postgres Pro configurations. pg_probackup3 now correctly handles CFS files in lz4, zstd, zlib, and pglz formats.

Fixed compression application for CFS backups. The utility now derives the compression algorithm for each tablespace from its *.cfm files, independent of the backup compression algorithm. Different compression algorithms can now coexist across tablespaces.

Fixed PGDATA comparison logic for CFS tablespaces — *.cfm files are now handled correctly when comparing pages, which ensures a proper validation check during synchronization (catchup) and incremental restore.

Fixed error handling when reading instance configuration — errors are now logged along with descriptions.

Improved the error message that occurred when attempting to unmount a FUSE filesystem with a running Postgres Pro instance.

Added logging of current retention policy parameters during the retention operation.

Fixed the CORRUPT backup status behavior. It is no longer set when backup validation is interrupted.

Added protection against infinite loops triggered by backup corruption detection.

Refined the archive-get command to correctly handle cases where zstd or any other compression algorithm is unavailable.

Fixed recovery with --recovery-target-timeline set to latest — it now works correctly on replicas after promotion.

Removed redundant cancellation token warnings that occurred when using --with-file-map in DIRECT mode. The metadata object is now initialized only when necessary.