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aria_chk - Online in the Cloud

Run aria_chk in OnWorks free hosting provider over Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

This is the command aria_chk that can be run in the OnWorks free hosting provider using one of our multiple free online workstations such as Ubuntu Online, Fedora Online, Windows online emulator or MAC OS online emulator

PROGRAM:

NAME


aria_chk - Aria table-maintenance utility

SYNOPSIS


aria_chk [OPTIONS] tables[.MAI]

DESCRIPTION


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'.

-H, --HELP
Print all argument options sorted alphabetically.

-?, --help
Print all options by groups

--datadir=path
Path for control file (and logs if --logdir not used)

--logdir=path
Path for log files

--ignore-control-file
Don't open the control file. Only use this if you are sure the tables are not in
use by another program!

--require-control-file
Abort if we can't find/read the maria_log_control file

-s, --silent
Only print errors. One can use two -s to make maria_chk very silent.

-t, --tmpdir=path
Path for temporary files. Multiple paths can be specified, separated by colon (:),
they will be used in a round-robin fashion.

-v, --verbose
Print more information. This can be used with --description and --check. Use many
-v for more verbosity.

-V, --version
Print version and exit.

-w, --wait
Wait if table is locked.

Check options (check is the default action for aria_chk)
-c, --check
Check table for errors.

-e, --extend-check
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.

-F, --fast
Check only tables that haven't been closed properly.

-C, --check-only-changed
Check only tables that have changed since last check.

-f, --force
Restart with '-r' if there are any errors in the table. States will be updated as
with '--update-state'.

-i, --information
Print statistics information about table that is checked.

-m, --medium-check
Faster than extend-check, but only finds 99.99% of all errors. Should be good
enough for most cases.

-T, --read-only
Don't mark table as checked.

-U, --update-state
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 disable.

--warning-for-wrong-transaction-id

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
Correct checksum information for table.

-D, --data-file-length=#
Max length of data file (when recreating data file when it's full).

-e, --extend-check
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.

-f, --force
Overwrite old temporary files.

-k, --keys-used=#
Tell Aria to update only some specific keys. # is a bit mask of which keys to use.
This can be used to get faster inserts.

--max-record-length=#
Skip rows bigger than this if aria_chk can't allocate memory to hold it.

-r, --recover
Can fix almost anything except unique keys that aren't unique.

-n, --sort-recover
Forces recovering with sorting even if the temporary file would be very big.

-p, --parallel-recover
Uses the same technique as '-r' and '-n', but creates all the keys in parallel, in
different threads.

-o, --safe-recover
Uses old recovery method; Slower than '-r' but can handle a couple of cases where
'-r' reports that it can't fix the data file.

--transaction-log
Log repair command to transaction log. This is needed if one wants to use the
aria_read_log to repeat the repair

--character-sets-dir=...
Directory where character sets are.

--set-collation=name
Change the collation used by the index.

-q, --quick
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 option.

-u, --unpack
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'.

--stats_method=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
"nulls_ignored".

-d, --description
Prints some information about table.

-A, --set-auto-increment[=value]
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.

-S, --sort-index
Sort index blocks. This speeds up 'read-next' in applications.

-R, --sort-records=#
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!).

-b, --block-search=#
Find a record, a block at given offset belongs to.

-z, --zerofill
Fill empty space in data and index files with zeroes. This makes the data file
movable between different servers.

--zerofill-keep-lsn
Like --zerofill but does not zero out LSN of data/index pages.

Variables
--page_buffer_size=#
Size of page buffer. Used by --safe-repair

--read_buffer_size=#
Read buffer size for sequential reads during scanning

--sort_buffer_size=#
Size of sort buffer. Used by --recover

--sort_key_blocks=#
Internal buffer for sorting keys; Don't touch.

--write_buffer_size=#
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-defaults
Print the program argument list and exit.

--no-defaults
Don't read default options from any option file.

--defaults-file=#
Only read default options from the given file #.

--defaults-extra-file=#
Read this file after the global files are read.

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