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MySQL in a Nutshell by Russell J.T. Dyer

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Name

mysqlhotcopy

Synopsis

mysqlhotcopy database [path]

Use this to make backup copies of databases while the server is active. It only works on MyISAM and ISAM tables, though. It makes a simple copy of each database directory and each table file. This results in a separate directory for each database and usually three files for each table: one for the schema, another for the data, and a third for the index. It places a read lock on all of the tables in the database while copying them. Here is an example of how you can copy a database with mysqlhotcopy:

mysqlhotcopy -u russell -p password db1 /tmp/backup

Note that unlike other MySQL utilities, there is a space between the -p and the password. Next the database (db1) is specified. Finally, the path to write the backup directories is given. To restore databases or tables that were copied by mysqlhotcopy, just copy the table files to be restored to their original data directories. Here are the following options:

--addtodest

Instructs the utility not to abort the session or to rename the backup directory, but to add new files to the directory.

--allowold

Instructs the utility to rename an existing backup directory to *_old so that the copying may be completed. If the new copy is successful, the old directory is deleted. If it’s unsuccessful, the old directory is restored.

--checkpoint= database.table

Instructs the utility to save logging information to the named database and table.

--debug

Used to enable debugging information.

--dryrun, ...

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