MySQL 5.5 Reference Manual Including MySQL NDB Cluster 7.2 Reference Guide

4.6.9 mysqlhotcopy — A Database Backup Program

mysqlhotcopy is a Perl script that was originally written and contributed by Tim Bunce. It uses FLUSH TABLES, LOCK TABLES, and cp or scp to make a database backup. It is a fast way to make a backup of the database or single tables, but it can be run only on the same machine where the database directories are located. mysqlhotcopy works only for backing up MyISAM and ARCHIVE tables. It runs on Unix.

To use mysqlhotcopy, you must have read access to the files for the tables that you are backing up, the SELECT privilege for those tables, the RELOAD privilege (to be able to execute FLUSH TABLES), and the LOCK TABLES privilege (to be able to lock the tables).

shell> mysqlhotcopy db_name [/path/to/new_directory]
shell> mysqlhotcopy db_name_1 ... db_name_n /path/to/new_directory

Back up tables in the given database that match a regular expression:

shell> mysqlhotcopy db_name./regex/

The regular expression for the table name can be negated by prefixing it with a tilde (~):

shell> mysqlhotcopy db_name./~regex/

mysqlhotcopy supports the following options, which can be specified on the command line or in the [mysqlhotcopy] and [client] groups of an option file. For information about option files used by MySQL programs, see Section, “Using Option Files”.

Table 4.21 mysqlhotcopy Options

Option Name Description
--addtodest Do not rename target directory (if it exists); merely add files to it
--allowold Do not abort if a target exists; rename it by adding an _old suffix
--checkpoint Insert checkpoint entries
--chroot Base directory of the chroot jail in which mysqld operates
--debug Write debugging log
--dryrun Report actions without performing them
--flushlog Flush logs after all tables are locked
--help Display help message and exit
--host Host on which MySQL server is located
--keepold Do not delete previous (renamed) target when done
--method The method for copying files
--noindices Do not include full index files in the backup
--old_server Connect to server that does not support FLUSH TABLES tbl_list WITH READ LOCK
--password Password to use when connecting to server
--port TCP/IP port number for connection
--quiet Be silent except for errors
--regexp Copy all databases with names that match the given regular expression
--resetmaster Reset the binary log after locking all the tables
--resetslave Reset the file after locking all the tables
--socket Unix socket file or Windows named pipe to use
--tmpdir The temporary directory
--user MySQL user name to use when connecting to server

Use perldoc for additional mysqlhotcopy documentation, including information about the structure of the tables needed for the --checkpoint and --record_log_pos options:

shell> perldoc mysqlhotcopy