Decompress and prepare a backup¶
Before you can prepare the backup you need to decompress all the files.
Decompress a backup¶
-
To decompress backups made using
LZ4
orZSTD
compression algorithm, install the corresponding package for your package management system.Install on APT systems
$ sudo apt install lz4
$ sudo apt install zstd
Install on YUM systems
$ sudo yum install lz4
$ sudo yum install zstd
-
Use the
--decompress
option to decompress the backup.$ xtrabackup --decompress --target-dir=/data/compressed/
Note
--parallel
can be used with--decompress
option to decompress multiple files simultaneously.Percona XtraBackup does not automatically delete compressed files. To clean up the backup directory, use the
--remove-original
option. If you do not remove the compressed files, these files will not be copied or moved to the datadir when using the--copy-back
or--move-back
options.
Prepare the backup¶
When the files are decompressed you can prepare the backup with the --prepare
option.
$ xtrabackup --prepare --target-dir=/data/compressed/
Confirmation message
InnoDB: Starting shutdown...
InnoDB: Shutdown completed; log sequence number 9293846
170223 13:39:31 completed OK!
Now the files in /data/compressed/
are ready to be used by the server.
The next step is to Restore a backup.
Get expert help¶
If you need assistance, visit the community forum for comprehensive and free database knowledge, or contact our Percona Database Experts for professional support and services.