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 used by MySQL programs, see Section 4.2.6, “Using Option Files”.

Table 4.13 mysqlhotcopy Options

FormatDescription
--addtodestDo not rename target directory (if it exists); merely add files to it
--allowoldDo not abort if a target exists; rename it by adding an _old suffix
--checkpoint=db_name.tbl_nameInsert checkpoint entries
--chroot=pathBase directory of the chroot jail in which mysqld operates
--debugWrite a debugging log
--dryrunReport actions without performing them
--flushlogFlush logs after all tables are locked
--helpDisplay help message and exit
--host=host_nameConnect to MySQL server on given host
--keepoldDo not delete previous (renamed) target when done
--methodThe method for copying files
--noindicesDo not include full index files in the backup
--password[=password]Password to use when connecting to server
--port=port_numTCP/IP port number to use for connection
--quietBe silent except for errors
--regexpCopy all databases with names that match the given regular expression
--resetmasterReset the binary log after locking all the tables
--resetslaveReset the master.info file after locking all the tables
--socket=pathFor connections to localhost, the Unix socket file to use
--tmpdir=pathThe temporary directory
--user=user_name,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