4.6.10. 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, see Section 4.2.3.3, "Using Option Files".

Table 4.16. mysqlhotcopy Options

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



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