mariabackup --help

mariabackup --help

Open source backup tool for InnoDB and XtraDB

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation version 2
of the License.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You can download full text of the license on http://www.gnu.org/licenses/gpl-2.0.txt

Usage: mariabackup [--defaults-file=#] [--backup | --prepare | --copy-back | --move-back] [OPTIONS]

Default options are read from the following files in the given order:
/etc/my.cnf /etc/mysql/my.cnf ~/.my.cnf
The following groups are read: mysqld server mysqld-10.5 mariadb mariadb-10.5 mariadbd mariadbd-10.5 client-server galera
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit.
--no-defaults Don't read default options from any option file.
The following specify which files/extra groups are read (specified before remaining options):
--defaults-file=# Only read default options from the given file #.
--defaults-extra-file=# Read this file after the global files are read.
--defaults-group-suffix=# Additionally read default groups with # appended as a suffix.
-V, --verbose display verbose output
-v, --version print xtrabackup version information
--target-dir=name destination directory
--backup take backup to target-dir
--prepare prepare a backup for starting mysql server on the backup.
--export create files to import to another database when prepare.
--print-param print parameter of mysqld needed for copyback.
--use-memory=# The value is used instead of buffer_pool_size
--throttle=# limit count of IO operations (pairs of read&write) per
second to IOS values (for '--backup')
--log[=name] Ignored option for MySQL option compatibility
--log-copy-interval=#
time interval between checks done by log copying thread
in milliseconds (default is 1 second).
--extra-lsndir=name (for --backup): save an extra copy of the
xtrabackup_checkpoints file in this directory.
--incremental-lsn=name
(for --backup): copy only .ibd pages newer than specified
LSN 'high:low'. ##ATTENTION##: If a wrong LSN value is
specified, it is impossible to diagnose this, causing the
backup to be unusable. Be careful!
--incremental-basedir=name
(for --backup): copy only .ibd pages newer than backup at
specified directory.
--incremental-dir=name
(for --prepare): apply .delta files and logfile in the
specified directory.
--tables=name filtering by regexp for table names.
--tables-file=name filtering by list of the exact database.table name in the
file.
--databases=name filtering by list of databases.
--databases-file=name
filtering by list of databases in the file.
--tables-exclude=name
filtering by regexp for table names. Operates the same
way as --tables, but matched names are excluded from
backup. Note that this option has a higher priority than
--tables.
--databases-exclude=name
Excluding databases based on name, Operates the same way
as --databases, but matched names are excluded from
backup. Note that this option has a higher priority than
--databases.
--stream=name Stream all backup files to the standard output in the
specified format.Supported format is 'mbstream' or
'xbstream'.
--compress[=name] Compress individual backup files using the specified
compression algorithm. Currently the only supported
algorithm is 'quicklz'. It is also the default algorithm,
i.e. the one used when --compress is used without an
argument.
--compress-threads=#
Number of threads for parallel data compression. The
default value is 1.
--compress-chunk-size=#
Size of working buffer(s) for compression threads in
bytes. The default value is 64K.
--incremental-force-scan
Perform a full-scan incremental backup even in the
presence of changed page bitmap data
--close-files do not keep files opened. Use at your own risk.
--core-file Write core on fatal signals
--copy-back Copy all the files in a previously made backup from the
backup directory to their original locations.
--move-back Move all the files in a previously made backup from the
backup directory to the actual datadir location. Use with
caution, as it removes backup files.
--galera-info This options creates the xtrabackup_galera_info file
which contains the local node state at the time of the
backup. Option should be used when performing the backup
of MariaDB Galera Cluster. Has no effect when backup
locks are used to create the backup.
--slave-info This option is useful when backing up a replication slave
server. It prints the binary log position and name of the
master server. It also writes this information to the
"xtrabackup_slave_info" file as a "CHANGE MASTER"
command. A new slave for this master can be set up by
starting a slave server on this backup and issuing a
"CHANGE MASTER" command with the binary log position
saved in the "xtrabackup_slave_info" file.
--no-lock Use this option to disable table lock with "FLUSH TABLES
WITH READ LOCK". Use it only if ALL your tables are
InnoDB and you DO NOT CARE about the binary log position
of the backup. This option shouldn't be used if there are
any DDL statements being executed or if any updates are
happening on non-InnoDB tables (this includes the system
MyISAM tables in the mysql database), otherwise it could
lead to an inconsistent backup. If you are considering to
use --no-lock because your backups are failing to acquire
the lock, this could be because of incoming replication
events preventing the lock from succeeding. Please try
using --safe-slave-backup to momentarily stop the
replication slave thread, this may help the backup to
succeed and you then don't need to resort to using this
option.
--safe-slave-backup Stop slave SQL thread and wait to start backup until
Slave_open_temp_tables in "SHOW STATUS" is zero. If there
are no open temporary tables, the backup will take place,
otherwise the SQL thread will be started and stopped
until there are no open temporary tables. The backup will
fail if Slave_open_temp_tables does not become zero after
--safe-slave-backup-timeout seconds. The slave SQL thread
will be restarted when the backup finishes.
--rsync Uses the rsync utility to optimize local file transfers.
When this option is specified, innobackupex uses rsync to
copy all non-InnoDB files instead of spawning a separate
cp for each file, which can be much faster for servers
with a large number of databases or tables. This option
cannot be used together with --stream.
--force-non-empty-directories
This option, when specified, makes --copy-back or
--move-back transfer files to non-empty directories. Note
that no existing files will be overwritten. If
--copy-back or --nove-back has to copy a file from the
backup directory which already exists in the destination
directory, it will still fail with an error.
--no-version-check This option disables the version check which is enabled
by the --version-check option.
--no-backup-locks This option controls if backup locks should be used
instead of FLUSH TABLES WITH READ LOCK on the backup
stage. The option has no effect when backup locks are not
supported by the server. This option is enabled by
default, disable with --no-backup-locks.
--decompress Decompresses all files with the .qp extension in a backup
previously made with the --compress option.
-u, --user=name This option specifies the MySQL username used when
connecting to the server, if that's not the current user.
The option accepts a string argument. See mysql --help
for details.
-H, --host=name This option specifies the host to use when connecting to
the database server with TCP/IP. The option accepts a
string argument. See mysql --help for details.
-P, --port=# This option specifies the port to use when connecting to
the database server with TCP/IP. The option accepts a
string argument. See mysql --help for details.
-p, --password=name This option specifies the password to use when connecting
to the database. It accepts a string argument. See mysql
--help for details.
--protocol=name The protocol to use for connection (tcp, socket, pipe,
memory).
-S, --socket=name This option specifies the socket to use when connecting
to the local database server with a UNIX domain socket.
The option accepts a string argument. See mysql --help
for details.
--incremental-history-name=name
This option specifies the name of the backup series
stored in the PERCONA_SCHEMA.xtrabackup_history history
record to base an incremental backup on. Xtrabackup will
search the history table looking for the most recent
(highest innodb_to_lsn), successful backup in the series
and take the to_lsn value to use as the starting lsn for
the incremental backup. This will be mutually exclusive
with --incremental-history-uuid, --incremental-basedir
and --incremental-lsn. If no valid lsn can be found (no
series by that name, no successful backups by that name)
xtrabackup will return with an error. It is used with the
--incremental option.
--incremental-history-uuid=name
This option specifies the UUID of the specific history
record stored in the PERCONA_SCHEMA.xtrabackup_history to
base an incremental backup on.
--incremental-history-name, --incremental-basedir and
--incremental-lsn. If no valid lsn can be found (no
success record with that uuid) xtrabackup will return
with an error. It is used with the --incremental option.
--remove-original Remove .qp files after decompression.
--ftwrl-wait-query-type=name
This option specifies which types of queries are allowed
to complete before innobackupex will issue the global
lock. Default is all.. One of: ALL, UPDATE, SELECT
--kill-long-query-type=name
This option specifies which types of queries should be
killed to unblock the global lock. Default is "all".. One
of: ALL, UPDATE, SELECT
--history[=name] This option enables the tracking of backup history in the
PERCONA_SCHEMA.xtrabackup_history table. An optional
history series name may be specified that will be placed
with the history record for the current backup being
taken.
--kill-long-queries-timeout=#
This option specifies the number of seconds innobackupex
waits between starting FLUSH TABLES WITH READ LOCK and
killing those queries that block it. Default is 0
seconds, which means innobackupex will not attempt to
kill any queries.
--ftwrl-wait-timeout=#
This option specifies time in seconds that innobackupex
should wait for queries that would block FTWRL before
running it. If there are still such queries when the
timeout expires, innobackupex terminates with an error.
Default is 0, in which case innobackupex does not wait
for queries to complete and starts FTWRL immediately.
--ftwrl-wait-threshold=#
This option specifies the query run time threshold which
is used by innobackupex to detect long-running queries
with a non-zero value of --ftwrl-wait-timeout. FTWRL is
not started until such long-running queries exist. This
option has no effect if --ftwrl-wait-timeout is 0.
Default value is 60 seconds.
--debug-sleep-before-unlock=#
This is a debug-only option used by the XtraBackup test
suite.
--safe-slave-backup-timeout=#
How many seconds --safe-slave-backup should wait for
Slave_open_temp_tables to become zero. (default 300)
--binlog-info[=name]
This option controls how XtraBackup should retrieve
server's binary log coordinates corresponding to the
backup. Possible values are OFF, ON, LOCKLESS and AUTO.
See the XtraBackup manual for more information. One of:
off, lockless, on, auto
--secure-auth Refuse client connecting to server if it uses old
(pre-4.1.1) protocol.
(Defaults to on; use --skip-secure-auth to disable.)
--log-innodb-page-corruption
Continue backup if innodb corrupted pages are found. The
pages are logged in innodb_corrupted_pages and backup is
finished with error. --prepare will try to fix corrupted
pages. If innodb_corrupted_pages exists after --prepare
in base backup directory, backup still contains corrupted
pages and can not be considered as consistent.
--ssl Enable SSL for connection (automatically enabled with
other flags).
--ssl-ca=name CA file in PEM format (check OpenSSL docs, implies
--ssl).
--ssl-capath=name CA directory (check OpenSSL docs, implies --ssl).
--ssl-cert=name X509 cert in PEM format (implies --ssl).
--ssl-cipher=name SSL cipher to use (implies --ssl).
--ssl-key=name X509 key in PEM format (implies --ssl).
--ssl-crl=name Certificate revocation list (implies --ssl).
--ssl-crlpath=name Certificate revocation list path (implies --ssl).
--tls-version=name TLS protocol version for secure connection.
--ssl-verify-server-cert
Verify server's "Common Name" in its cert against
hostname used when connecting. This option is disabled by
default.
-h, --datadir=name Path to the database root.
-t, --tmpdir=name Path for temporary files. Several paths may be specified,
separated by a colon (:), in this case they are used in a
round-robin fashion.
--parallel=# Number of threads to use for parallel datafiles transfer.
The default value is 1.
--extended-validation
Enable extended validation for Innodb data pages during
backup phase. Will slow down backup considerably, in case
encryption is used. May fail if tables are created during
the backup.
--encrypted-backup In --backup, assume that nonzero key_version implies that
the page is encrypted. Use --backup
--skip-encrypted-backup to allow copying unencrypted that
were originally created before MySQL 5.1.48.
(Defaults to on; use --skip-encrypted-backup to disable.)
--log[=name] Ignored option for MySQL option compatibility
--log-bin[=name] Base name for the log sequence
--innodb[=name] Ignored option for MySQL option compatibility
--innodb-adaptive-hash-index
Enable InnoDB adaptive hash index (disabled by default).
--innodb-autoextend-increment=#
Data file autoextend increment in megabytes
--innodb-data-file-path=name
Path to individual files and their sizes.
--innodb-data-home-dir=name
The common part for InnoDB table spaces.
--innodb-doublewrite
Enable InnoDB doublewrite buffer during --prepare.
--innodb-io-capacity[=#]
Number of IOPs the server can do. Tunes the background IO
rate
--innodb-file-io-threads=#
Number of file I/O threads in InnoDB.
--innodb-read-io-threads=#
Number of background read I/O threads in InnoDB.
--innodb-write-io-threads=#
Number of background write I/O threads in InnoDB.
--innodb-file-per-table
Stores each InnoDB table to an .ibd file in the database
dir.
--innodb-flush-method=name
With which method to flush data.. One of: fsync, O_DSYNC,
littlesync, nosync, O_DIRECT, O_DIRECT_NO_FSYNC
--innodb-log-buffer-size=#
The size of the buffer which InnoDB uses to write log to
the log files on disk.
--innodb-log-file-size=#
Ignored for mysqld option compatibility
--innodb-log-files-in-group=#
Ignored for mysqld option compatibility
--innodb-log-group-home-dir=name
Path to InnoDB log files.
--innodb-max-dirty-pages-pct=#
Percentage of dirty pages allowed in bufferpool.
--innodb-use-native-aio
Use native AIO if supported on this platform.
(Defaults to on; use --skip-innodb-use-native-aio to disable.)
--innodb-page-size=#
The universal page size of the database.
--innodb-buffer-pool-filename=name
Ignored for mysqld option compatibility
--debug-sync=name Debug sync point. This is only used by the xtrabackup
test suite
--innodb-checksum-algorithm=name
The algorithm InnoDB uses for page checksumming. [CRC32,
STRICT_CRC32, INNODB, STRICT_INNODB, NONE, STRICT_NONE].
One of: crc32, strict_crc32, innodb, strict_innodb, none,
strict_none, full_crc32, strict_full_crc32
--innodb-undo-directory=name
Directory where undo tablespace files live, this path can
be absolute.
--innodb-undo-tablespaces=#
Number of undo tablespaces to use.
--innodb-compression-level=#
Compression level used for zlib compression.
--defaults-group=name
defaults group in config file (default "mysqld").
--plugin-dir=name Server plugin directory. Used to load encryption plugin
during 'prepare' phase.Has no effect in the 'backup'
phase (plugin directory during backup is the same as
server's)
--open-files-limit=#
the maximum number of file descriptors to reserve with
setrlimit().
--lock-ddl-per-table
Lock DDL for each table before xtrabackup starts to copy
it and until the backup is completed.
--rocksdb-datadir=name
RocksDB data directory.This option is only used with
--copy-back or --move-back option
--rocksdb-backup Backup rocksdb data, if rocksdb plugin is installed.Used
only with --backup option. Can be useful for partial
backups, to exclude all rocksdb data
(Defaults to on; use --skip-rocksdb-backup to disable.)
--check-privileges Check database user privileges fro the backup user
(Defaults to on; use --skip-check-privileges to disable.)
--mysqld-args All arguments that follow this argument are considered as
server options, and if some of them are not supported by
mariabackup, they will be ignored.
-?, --help Display this help and exit.

Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
datadir .
tmpdir (No default value)
parallel 1
extended-validation FALSE
encrypted-backup TRUE
log (No default value)
log-bin (No default value)
innodb (No default value)
innodb-adaptive-hash-index FALSE
innodb-autoextend-increment 8
innodb-data-file-path (No default value)
innodb-data-home-dir (No default value)
innodb-doublewrite FALSE
innodb-io-capacity 200
innodb-file-io-threads 4
innodb-read-io-threads 4
innodb-write-io-threads 4
innodb-file-per-table FALSE
innodb-flush-method fsync
innodb-log-buffer-size 1048576
innodb-log-file-size 50331648
innodb-log-files-in-group 1
innodb-log-group-home-dir (No default value)
innodb-max-dirty-pages-pct 90
innodb-use-native-aio TRUE
innodb-page-size 16384
innodb-buffer-pool-filename (No default value)
debug-sync (No default value)
innodb-checksum-algorithm crc32
innodb-undo-directory (No default value)
innodb-undo-tablespaces 0
innodb-compression-level 6
defaults-group mysqld
plugin-dir (No default value)
open-files-limit 0
lock-ddl-per-table FALSE
rocksdb-datadir (No default value)
rocksdb-backup TRUE
check-privileges TRUE
mysqld-args FALSE
help TRUE

Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
verbose FALSE
version FALSE
target-dir ./xtrabackup_backupfiles/
backup FALSE
prepare FALSE
export FALSE
print-param FALSE
use-memory 0
throttle 0
log (No default value)
log-copy-interval 1000
extra-lsndir (No default value)
incremental-lsn (No default value)
incremental-basedir (No default value)
incremental-dir (No default value)
tables (No default value)
tables-file (No default value)
databases (No default value)
databases-file (No default value)
tables-exclude (No default value)
databases-exclude (No default value)
stream (No default value)
compress (No default value)
compress-threads 0
compress-chunk-size 0
incremental-force-scan FALSE
close-files FALSE
copy-back FALSE
move-back FALSE
galera-info FALSE
slave-info FALSE
no-lock FALSE
safe-slave-backup FALSE
rsync FALSE
force-non-empty-directories FALSE
no-version-check FALSE
no-backup-locks FALSE
decompress FALSE
user (No default value)
host (No default value)
port 0
socket (No default value)
incremental-history-name (No default value)
incremental-history-uuid (No default value)
remove-original FALSE
ftwrl-wait-query-type ALL
kill-long-query-type ALL
kill-long-queries-timeout 0
ftwrl-wait-timeout 0
ftwrl-wait-threshold 0
debug-sleep-before-unlock 0
safe-slave-backup-timeout 0
binlog-info off
secure-auth TRUE
log-innodb-page-corruption FALSE
ssl FALSE
ssl-ca (No default value)
ssl-capath (No default value)
ssl-cert (No default value)
ssl-cipher (No default value)
ssl-key (No default value)
ssl-crl (No default value)
ssl-crlpath (No default value)
tls-version (No default value)
ssl-verify-server-cert FALSE

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mariabackup --help

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