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The initial backup files might not be in a consistent state, because data could be changed while the backup is running. These initial files are known as the raw backup. The next step is to update the backup files so that they reflect the state of the database corresponding to a specific InnoDB log sequence number. (The same kind of operation as crash recovery. When this step is complete, these final files are known as the prepared backup.
During the backup,
ibbackup copies the
accumulated InnoDB log to a file called
ibbackup_logfile. This log file is used to
“roll forward” the backed-up data files, so that
every page in the data files corresponds to the same log sequence
number of the InnoDB log.
The option for applying the log is
In the prior InnoDB Hot Backup Product, this option was called
--restore, but that option was renamed because
it prepares the data to be restored, rather than actually
This phase also creates new
correspond to the data files.