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 and NetWare.

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, see Section 4.2.6, “Using Option Files”.

Table 4.13 mysqlhotcopy Options

FormatOption FileDescription
--addtodestaddtodestDo not rename target directory (if it exists); merely add files to it
--allowoldallowoldDo not abort if a target exists; rename it by adding an _old suffix
--checkpoint=db_name.tbl_namecheckpointInsert checkpoint entries
--chroot=pathchrootBase directory of the chroot jail in which mysqld operates
--debugdebugWrite a debugging log
--dryrundryrunReport actions without performing them
--flushlogflushlogFlush logs after all tables are locked
--help Display help message and exit
--host=host_namehostConnect to MySQL server on given host
--keepoldkeepoldDo not delete previous (renamed) target when done
--methodmethodThe method for copying files
--noindicesnoindicesDo not include full index files in the backup
--password[=password]passwordPassword to use when connecting to server
--port=port_numportTCP/IP port number to use for connection
--quietquietBe silent except for errors
--regexpregexpCopy all databases with names that match the given regular expression
--resetmasterresetmasterReset the binary log after locking all the tables
--resetslaveresetslaveReset the master.info file after locking all the tables
--socket=pathsocketFor connections to localhost, the Unix socket file to use
--tmpdir=pathtmpdirThe temporary directory
--user=user_name,userMySQL 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