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Percona XtraBackup 8.4.0-7 (2026-09-17)

Get started with Quickstart Guide for Percona XtraBackup.

Release highlights

Percona XtraBackup 8.4.0-7 release includes improvements and bug fixes.

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.

Improvements

  • PXB-3502: Improves parallel processing performance by processing files in largest-first order instead of discovery order. With --parallel, large tables and partitions start processing earlier, reducing the time spent waiting for large files after other parallel tasks complete. The improvement applies to --backup, --prepare --incremental-dir, --copy-back, --move-back, and --decompress.

  • PXB-3853: Improves incremental backups with page tracking by skipping unchanged page ranges between blocks of changed pages. This reduces unnecessary I/O, especially for large tablespaces, and keeps the amount of data read closer to the amount of changed data. (Thank you to Reto Giezendanner for your contribution)

  • PXB-3862: Improves incremental backups with page tracking by reading nearby changed pages together instead of reading each page separately. This improves backup performance when changed pages are scattered. Backup contents and size remain unchanged. Set --page-tracking-merge-gap=0 to read each changed page separately.

Bug fixes

  • PXB-3609: Fixed an issue where xbcloud delete did not remove .md5 checksum files  for backups uploaded with xbcloud put --md5.

  • PXB-3863: Fixed an issue where xbcloud put, xbcloud get, and xbcloud delete could fail on Azure Blob Storage containers with hierarchical namespace enabled when the backup name began with a slash, for example xbcloud put /db/hns. Leading slashes are now handled correctly.

Additional resources

Install Percona XtraBackup 8.4.0-7

The Percona XtraBackup GitHub repository

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