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.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.
Next step¶
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.