Index of files created by Percona XtraBackup¶
- Information related to the backup and the server
| File Name | Description |
|---|---|
backup-my.cnf |
This file contains information to start the mini instance
of InnoDB during the --prepare.
This
**not** a
backup of the original my.cnf. The
InnoDB configuration is
read from
the file backup-my.cnf created by
xtrabackup when the backup was made. The --prepare uses InnoDB
configuration from backup-my.cnf
by default, or from --defaults-file, if specified. The InnoDB's configuration in this context means server variables that affect dataformat, i.e. innodb_page_size option, innodb_log_block_size, etc. Location-related variables, like innodb_log_group_home_dir or innodb_data_file_path are always ignored by --prepare, so preparing a backup always works with data files from the back directory, rather than any external ones. |
xtrabackup_checkpoints | The type of the backup (for example, full or incremental),
its state (for example, prepared) and the LSN range contained in it.
This information is used for incremental backups. Example of the
backup_type = full-backuped
from lsn= 0
to_lsn = 15188961605
last_lsn = 15188961605
xtrabackup_checkpoints after taking an
incremental backup:
backup_type = incremental
from_lsn = 15188961605
to_lsn = 15189350111
last_lsn = 15189350111
|
xtrabackup_binlog_info |
The binary log file used by the server and its position at the moment of the backup. A result of the following query: SELECT server_uuid, local, replication, storage_engines FROM performance_schema.log_status;
|
xtrabackup_binlog |
The xtrabackup binary used in the process. |
xtrabackup_logfile |
Contains data needed for running the: --prepare.
> The bigger this file is the --prepare process
> will take longer to finish.
|
<table_name>.delta.meta |
This file is going to be created when performing the incremental backup. > It contains the per-table delta metadata: page size, size of compressed > page (if the value is 0 it means the tablespace isn’t compressed) and > space id. Example of this file: page_size = 16384
zip_size = 0
space_id = 0
|
- Information related to the replication environment (if using the
--slave-infooption):
xtrabackup_slave_info
The CHANGE MASTER statement needed for setting up a replica.
- Information related to the Galera and Percona XtraDB Cluster (if
using the
--galera-infooption):
xtrabackup_galera_info
Contains the values of wsrep_local_state_uuid andwsrep_last_committed status variables