This release is the current GA (Generally Available) stable release in the 2.0 series.
Percona XtraBackup has implemented basic support for MySQL 5.6, Percona Server 5.6 and MariaDB 10.0. Basic support means that these versions are are recognized by Percona XtraBackup, and that backup/restore works as long as no 5.6-specific features are used (such as GTID, remote/transportable tablespaces, separate undo tablespace, 5.6-style buffer pool dump files).
Individual InnoDB tablespaces with size less than 1MB were extended to 1MB on the backup prepare operation. This led to a large increase in disk usage in cases when there are many small InnoDB tablespaces. Bug fixed #950334 (Daniel Frett, Alexey Kopytov).
Fixed the issue that caused databases corresponding to inaccessible datadir subdirectories to be ignored by Percona XtraBackup without warning or error messages. This was happening because InnoDB code silently ignored datadir subdirectories it could not open. Bug fixed #664986 (Alexey Kopytov).
Under some circumstances Percona XtraBackup could fail to copy a tablespace with a high --parallel option value and a low innodb_open_files value. Bug fixed #870119 (Alexey Kopytov).
Fix for the bug #711166 introduced a regression that caused individual partition backups to fail when used with --include option in innobackupex or the --tables option in xtrabackup. Bug fixed #1130627 (Alexey Kopytov).
innobackupex didn’t add the file-per-table setting for table-independent backups. Fixed by making Percona XtraBackup auto-enable innodb_file_per_table when the --export option is used. Bug fixed #930062 (Alexey Kopytov).
Under some circumstances Percona XtraBackup could fail on a backup prepare with innodb_flush_method=O_DIRECT. Bug fixed #1055547 (Alexey Kopytov).
innobackupex did not pass the --tmpdir option to the xtrabackup binary resulting in the server’s tmpdir always being used for temporary files. Bug fixed #1085099 (Alexey Kopytov).
Percona XtraBackup has improved the error reporting for unrecognized server versions. Bug fixed #1087219 (Alexey Kopytov).
Fixed the missing rpm dependency for Perl Time::HiRes package that caused innobackupex to fail on minimal CentOS installations. Bug fixed #1121573 (Alexey Bychko).
innobackupex would fail when --no-lock and --rsync were used in conjunction. Bug fixed #1123335 (Sergei Glushchenko).
Unnecessary debug messages have been removed from the Percona XtraBackup output. Bug fixed #1131084 (Alexey Kopytov).
Other bug fixes: bug fixed #1153334 (Alexey Kopytov), bug fixed #1098498 (Laurynas Biveinis), bug fixed #1132763 (Laurynas Biveinis), bug fixed #1142229 (Laurynas Biveinis), bug fixed #1130581 (Laurynas Biveinis).