# Percona XtraBackup 8.0.26-18.0


* **Date**

    September 2, 2021



* **Installation**

    [Installing Percona XtraBackup](https://www.percona.com/doc/percona-xtrabackup/8.0/installation.html)


Percona XtraBackup enables MySQL backups without blocking user queries, making it ideal
for companies with large data sets and mission-critical applications that cannot tolerate
long periods of downtime. Offered free as an open source solution, it drives down backup
costs while providing unique features for MySQL backups.

## Improvements


* [PXB-2477](https://jira.percona.com/browse/PXB-2477): The xbcloud should retry on error and utilize incremental backoff (Thanks to Baptiste Mille-Mathias for reporting this issue)


* [PXB-2580](https://jira.percona.com/browse/PXB-2580): With the xbcloud binary, a chunk-upload on an SSL connect error to S3 was not retried (Thanks to Tim Vaillancourt for providing the patch)


* [PXB-2317](https://jira.percona.com/browse/PXB-2317): Remove the obsolete LOCKLESS binary log functionality since the `performance_schema.log_status` table is now used to get the log information on all the storages without locking them

## Bugs Fixed


* [PXB-2101](https://jira.percona.com/browse/PXB-2101): The Prepare step fails due to duplicate Serialized Dictionary Information (SDI) (Thanks to Fungo Wang for reporting this issue)


* [PXB-1504](https://jira.percona.com/browse/PXB-1504): The FIND_GCRYPT macro is broken (Thanks to Maxim Bublis for reporting this issue)


* [PXB-1961](https://jira.percona.com/browse/PXB-1961): The Prepare step of a full backup fails for encrypted tables with a generic error


* [PXB-2585](https://jira.percona.com/browse/PXB-2585): XtraBackup fails to backup archive RocksDB Write-Ahead Log (WAL) files