Describe, check and repair of Aria tables. Used without options
all tables on the command will be checked for errors
Global options-#, --debug=...
Output debug log. Often this is 'd:t:o,filename'.
Print all argument options sorted alphabetically.
Print all options by groups
Path for control file (and logs if --logdir not used)
Path for log files
Don't open the control file. Only use this if you are sure
the tables are not in use by another program!
Abort if we can't find/read the maria_log_control file
Only print errors. One can use two -s to make maria_chk
Path for temporary files. Multiple paths can be specified,
separated by colon (:), they will be used in a round-robin
Print more information. This can be used with
--description and --check. Use many -v for more verbosity.
Print version and exit.
Wait if table is locked.
Check options (check is the default action for aria_chk)-c, --check
Check table for errors.
Check the table VERY throughly. Only use this in extreme
cases as aria_chk should normally be able to find out if
the table is ok even without this switch.
Check only tables that haven't been closed properly.
Check only tables that have changed since last check.
Restart with '-r' if there are any errors in the table.
States will be updated as with '--update-state'.
Print statistics information about table that is checked.
Faster than extend-check, but only finds 99.99% of all
errors. Should be good enough for most cases.
Don't mark table as checked.
Mark tables as crashed if any errors were found and clean
if check didn't find any errors but table was marked as
'not clean' before. This allows one to get rid of warnings
like 'table not properly closed'. If table was updated,
update also the timestamp for when the check was made.
This option is on by default! Use --skip-update-state to
Give a warning if we find a transaction id in the table
that is bigger than what exists in the control file. Use
--skip-... to disable warning
Recover (repair)/ options (When using '--recover' or '--safe-recover')-B, --backup
Make a backup of the .MAD file as 'filename-time.BAK'.
Correct checksum information for table.
Max length of data file (when recreating data file when
Try to recover every possible row from the data file
Normally this will also find a lot of garbage rows; Don't
use this option if you are not totally desperate.
Overwrite old temporary files.
Tell Aria to update only some specific keys. # is a bit
mask of which keys to use. This can be used to get faster
Skip rows bigger than this if aria_chk can't allocate
memory to hold it.
Can fix almost anything except unique keys that aren't
Forces recovering with sorting even if the temporary file
would be very big.
Uses the same technique as '-r' and '-n', but creates all
the keys in parallel, in different threads.
Uses old recovery method; Slower than '-r' but can handle
a couple of cases where '-r' reports that it can't fix the
Log repair command to transaction log. This is needed if
one wants to use the aria_read_log to repeat the repair
Directory where character sets are.
Change the collation used by the index.
Faster repair by not modifying the data file. One can
give a second '-q' to force aria_chk to modify the
original datafile in case of duplicate keys. NOTE: Tables
where the data file is currupted can't be fixed with this
Unpack file packed with ariapack.
Other actions-a, --analyze
Analyze distribution of keys. Will make some joins in
MariaDB faster. You can check the calculated distribution
by using '--description --verbose table_name'.
Specifies how index statistics collection code should
treat NULLs. Possible values of name are "nulls_unequal"
(default for 4.1/5.0), "nulls_equal" (emulate 4.0), and
Prints some information about table.
Force auto_increment to start at this or higher value If
no value is given, then sets the next auto_increment value
to the highest used value for the auto key + 1.
Sort index blocks. This speeds up 'read-next' in
Sort records according to an index. This makes your data
much more localized and may speed up things (It may be
VERY slow to do a sort the first time!).
Find a record, a block at given offset belongs to.
Fill empty space in data and index files with zeroes.
This makes the data file movable between different
Like --zerofill but does not zero out LSN of data/index
Size of page buffer. Used by --safe-repair--read_buffer_size=#
Read buffer size for sequential reads during scanning
Size of sort buffer. Used by --recover--sort_key_blocks=#
Internal buffer for sorting keys; Don't touch.
Write buffer size for sequential writes during repair
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: aria_chk
The following options may be given as the first argument:
Print the program argument list and exit.
Don't read default options from any option file.
Only read default options from the given file #.
Read this file after the global files are read.
This page is part of the MariaDB (MariaDB database server)
project. Information about the project can be found at
⟨http://mariadb.org/⟩. If you have a bug report for this manual
page, see ⟨https://mariadb.com/kb/en/mariadb/reporting-bugs/⟩.
This page was obtained from the project's upstream Git repository
⟨https://github.com/MariaDB/server⟩ on 2021-04-01. (At that
time, the date of the most recent commit that was found in the
repository was 2020-11-03.) If you discover any rendering
problems in this HTML version of the page, or you believe there
is a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
aria_chk Ver 1.2 May 2014 ARIA_CHK(1)