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MYSQLHOTCOPY(1)       User Contributed Perl Documentation      MYSQLHOTCOPY(1)

       mysqlhotcopy - fast on-line hot-backup utility for local MySQL
       databases and tables

	 mysqlhotcopy db_name

	 mysqlhotcopy --suffix=_copy db_name_1 ... db_name_n

	 mysqlhotcopy db_name_1 ... db_name_n /path/to/new_directory

	 mysqlhotcopy db_name./regex/

	 mysqlhotcopy db_name./^\(foo\|bar\)/

	 mysqlhotcopy db_name./~regex/

	 mysqlhotcopy db_name_1./regex_1/ db_name_1./regex_2/ ... db_name_n./regex_n/ /path/to/new_directory

	 mysqlhotcopy --method=scp -Bq -i /usr/home/foo/.ssh/identity --user=root --password=secretpassword \
		db_1./^nice_table/ user@some.system.dom:~/path/to/new_directory

       WARNING: THIS PROGRAM IS STILL IN BETA. Comments/patches welcome.

       mysqlhotcopy is designed to make stable copies of live MySQL databases.

       Here "live" means that the database server is running and the database
       may be in active use. And "stable" means that the copy will not have
       any corruptions that could occur if the table files were simply copied
       without first being locked and flushed from within the server.

       --checkpoint checkpoint-table
	   As each database is copied, an entry is written to the specified
	   checkpoint-table.  This has the happy side-effect of updating the
	   MySQL update-log (if it is switched on) giving a good indication of
	   where roll-forward should begin for backup+rollforward schemes.

	   The name of the checkpoint table should be supplied in database.ta
	   ble format.	The checkpoint-table must contain at least the follow
	   ing fields:

	     time_stamp timestamp not null
	     src varchar(32)
	     dest varchar(60)
	     msg varchar(255)

       --record_log_pos log-pos-table
	   Just before the database files are copied, update the record in the
	   log-pos-table from the values returned from "show master status"
	   and "show slave status". The master status values are stored in the
	   log_file and log_pos columns, and establish the position in the
	   binary logs that any slaves of this host should adopt if ini
	   tialised from this dump.  The slave status values are stored in
	   master_host, master_log_file, and master_log_pos, and these are
	   useful if the host performing the dump is a slave and other sibling
	   slaves are to be initialised from this dump.

	   The name of the log-pos table should be supplied in database.table
	   format.  A sample log-pos table definition:

	       CREATE TABLE log_pos (
		 host		 varchar(60) NOT null,
		 time_stamp	 timestamp(14) NOT NULL,
		 log_file	 varchar(32) default NULL,
		 log_pos	 int(11)     default NULL,
		 master_host	 varchar(60) NULL,
		 master_log_file varchar(32) NULL,
		 master_log_pos  int NULL,

		 PRIMARY KEY  (host)

       --suffix suffix
	   Each database is copied back into the originating datadir under a
	   new name. The new name is the original name with the suffix

	   If only a single db_name is supplied and the --suffix flag is not
	   supplied, then "--suffix=_copy" is assumed.

	   Move any existing version of the destination to a backup directory
	   for the duration of the copy. If the copy successfully completes,
	   the backup directory is deleted - unless the --keepold flag is set.
	   If the copy fails, the backup directory is restored.

	   The backup directory name is the original name with "_old"
	   appended.  Any existing versions of the backup directory are

	   Behaves as for the --allowold, with the additional feature of keep
	   ing the backup directory after the copy successfully completes.

	   Dont rename target directory if it already exists, just add the
	   copied files into it.

	   This is most useful when backing up a database with many large
	   tables and you dont want to have all the tables locked for the
	   whole duration.

	   In this situation, if you are happy for groups of tables to be
	   backed up separately (and thus possibly not be logically consistant
	   with one another) then you can run mysqlhotcopy several times on
	   the same database each with different db_name./table_regex/.  All
	   but the first should use the --addtodest option so the tables all
	   end up in the same directory.

	   Rotate the log files by executing "FLUSH LOGS" after all tables are
	   locked, and before they are copied.

	   Reset the bin-log by executing "RESET MASTER" after all tables are
	   locked, and before they are copied. Useful if you are recovering a
	   slave in a replication setup.

	   Reset the master.info by executing "RESET SLAVE" after all tables
	   are locked, and before they are copied. Useful if you are recover
	   ing a server in a mutual replication setup.

       --regexp pattern
	   Copy all databases with names matching the pattern

       --regexp /pattern1/./pattern2/
	   Copy all tables with names matching pattern2 from all databases
	   with names matching pattern1. For example, to select all tables
	   which names begin with bar from all databases which names end
	   with foo:

	      mysqlhotcopy --indices --method=cp --regexp /foo$/./^bar/

	   Copy only tables matching pattern. Shell metacharacters ( (, ), |,
	   !, etc.) have to be escaped (e.g. \). For example, to select all
	   tables in database db1 whose names begin with foo or bar:

	       mysqlhotcopy --indices --method=cp db1./^\(foo\|bar\)/

	   Copy only tables not matching pattern. For example, to copy tables
	   that do not begin with foo nor bar:

	       mysqlhotcopy --indices --method=cp db1./~^\(foo\|bar\)/

       -?, --help
	   Display helpscreen and exit

       -u, --user=#
	   user for database login if not current user

       -p, --password=#
	   password to use when connecting to the server. Note that you are
	   strongly encouraged *not* to use this option as every user would be
	   able to see the password in the process list. Instead use the
	   [mysqlhotcopy] section in one of the config files, normally
	   /etc/my.cnf or your personal ~/.my.cnf.  (See the chapter my.cnf
	   Option Files in the manual)

	   WARNING: Providing a password on command line is insecure as it is
	   visible through /proc to anyone for a short time.

       -h, -h, --host=#
	   Hostname for local server when connecting over TCP/IP.  By specify
	   ing this different from localhost will trigger mysqlhotcopy to
	   use TCP/IP connection.

       -P, --port=#
	   port to use when connecting to MySQL server with TCP/IP.  This is
	   only used when using the --host option.

       -S, --socket=#
	   UNIX domain socket to use when connecting to local server

	   Don\t include index files in copy. Only up to the first 2048 bytes
	   are copied;	You can restore the indexes with isamchk -r or myisam
	   chk -r on the backup.

	   method for copy (only "cp" currently supported). Alpha support for
	   "scp" was added in November 2000. Your experience with the scp
	   method will vary with your ability to understand how scp works.
	   man scp and man ssh are your friends.

	   The destination directory _must exist_ on the target machine using
	   the scp method. --keepold and --allowold are meaningless with scp.
	   Liberal use of the --debug option will help you figure out what\s
	   really going on when you do an scp.

	   Note that using scp will lock your tables for a _long_ time unless
	   your network connection is _fast_. If this is unacceptable to you,
	   use the cp method to copy the tables to some temporary area and
	   then scp or rsync the files at your leisure.

       -q, --quiet
	   be silent except for errors

	   Debug messages are displayed

       -n, --dryrun
	   Display commands without actually doing them

       This software is free and comes without warranty of any kind. You
       should never trust backup software without studying the code yourself.
       Study the code inside this script and only rely on it if you believe
       that it does the right thing for you.

       Patches adding bug fixes, documentation and new features are welcome.
       Please send these to internals@lists.mysql.com.

       Extend the individual table copy to allow multiple subsets of tables to
       be specified on the command line:

	 mysqlhotcopy db newdb	t1 t2 /^foo_/ : t3 /^bar_/ : +

       where ":" delimits the subsets, the /^foo_/ indicates all tables with
       names begining with "foo_" and the "+" indicates all tables not copied
       by the previous subsets.

       newdb is either another not existing database or a full path to a
       directory where we can create a directory db

       Add option to lock each table in turn for people who don\t need cross-
       table integrity.

       Add option to FLUSH STATUS just before UNLOCK TABLES.

       Add support for other copy methods (eg tar to single file?).

       Add support for forthcoming MySQL RAID table subdirectory layouts.

       Tim Bunce

       Martin Waite - added checkpoint, flushlog, regexp and dryrun options
		      Fixed cleanup of targets when hotcopy fails.
       Added --record_log_pos.
		      RAID tables are now copied (dont know if this works
       over scp).

       Ralph Corderoy - added synonyms for commands

       Scott Wiersdorf - added table regex and scp support

       Monty - working --noindex (copy only first 2048 bytes of index file)
	       Fixes for --method=scp

       Ask Bjoern Hansen - Cleanup code to fix a few bugs and enable -w again.

       Emil S. Hansen - Added resetslave and resetmaster.

       Jeremy D. Zawodny - Removed depricated DBI calls.  Fixed bug which
       resulted in nothing being copied when a regexp was specified but no
       database name(s).

       Martin Waite - Fix to handle database name that contains space.

       Paul DuBois - Remove end / from directory names

perl v5.8.8			  2008-01-27		       MYSQLHOTCOPY(1)

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