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Percona XtraBackup 8.4.0-6 (2026-06-24)

Get started with Quickstart Guide for Percona XtraBackup.

Release highlights

Percona XtraBackup 8.4.0-6 release includes new features, improvements and bug fixes.

  • Percona XtraBackup introduces the --check-tables option to validate the structural integrity of InnoDB B-tree indexes during the --prepare phase. Validation during --prepare helps detect corrupted indexes before restore or production deployment.

  • Percona XtraBackup introduces backup size reporting for successful backups. Percona XtraBackup now records backup size in xtrabackup_info and reports the same information in the XtraBackup error log. Backup size reporting helps estimate storage requirements, check that backups work correctly, and plan restores for compressed and streamed backups.

  • Percona XtraBackup adds support for Azure Storage accounts with Hierarchical Namespace (HNS) enabled in xbcloud delete. Percona XtraBackup now correctly removes backups from Azure Data Lake Storage Gen2 environments where deletion previously failed due to unsupported HNS behavior.

  • Percona XtraBackup improves --copy-back and --move-back handling for backups created from servers with non-default InnoDB configuration paths. Percona XtraBackup now automatically processes configuration values stored in backup-my.cnf, avoiding restore failures caused by custom innodb_data_file_path and related settings.

  • Percona XtraBackup improves sparse file handling efficiency by removing redundant fallocate(PUNCH_HOLE) calls from local_write_sparse.

  • Percona XtraBackup improves incremental backup speed for instances containing around one million tables, reducing the time required for incremental backups to complete.

We recommend that you download the Percona XtraBackup for the same platform as the MySQL-compatible server. For example, if your server is on an ARM64 platform, you should download and use the Percona XtraBackup for ARM64 for that operating system.

New features

PXB-3328: Adds the --check-tables option to validate InnoDB B-tree index integrity during the --prepare phase. The option detects structural corruption in backup files before restore or deployment.

PXB-3747: Adds backup size reporting for successful backups. Percona XtraBackup now records backup size in xtrabackup_info and reports the same information in the XtraBackup error log.

Improvements

PXB-3643: Adds support for Azure Storage accounts with Hierarchical Namespace (HNS) enabled in xbcloud delete. Percona XtraBackup now correctly removes backups from Azure Data Lake Storage Gen2 environments where deletion previously failed due to unsupported HNS behavior.

PXB-3458: Improves --copy-back and --move-back handling for backups created from servers with non-default InnoDB configuration paths. Percona XtraBackup now automatically processes configuration values stored in backup-my.cnf, avoiding restore failures caused by custom innodb_data_file_path and related settings.

PXB-3658: Improves sparse file handling efficiency by removing redundant fallocate(PUNCH_HOLE) calls from local_write_sparse.

Bug fixes

PXB-3568: Fixed an issue where xtrabackup terminated unexpectedly on RHEL 9 when using --compress=lz4.

PXB-3759: Fixed an issue where xtrabackup terminated unexpectedly when redo log encryption was enabled and innodb_log_buffer_size exceeded 16 MB.

PXB-3762: Fixed an issue where xtrabackup --backup --transition-key terminated unexpectedly on servers where undo tablespace encryption keys existed only in redo logs.

PXB-3543: Fixed an issue where incremental backups on instances containing around one million tables completed significantly slower than expected.

Packaging notes

  • Percona XtraBackup 8.4 adds support for Ubuntu 26.04.

Additional resources

Install Percona XtraBackup 8.4.0-6

The Percona XtraBackup GitHub repository

Download product binaries, packages, and tarballs at Percona Product Downloads