aria_chk - Aria table-maintenance utility
aria_chk [OPTIONS] tables[.MAI]
Describe, check and repair of Aria tables. Used without options
all tables on the command will be checked for errors
- -#, --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.
- -c, --check
- Check table for errors.
- -e,
--extend-check
- Check the table VERY thoroughly. 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
- -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 corrupted can't be fixed with
this option.
- -u, --unpack
- Unpack file packed with ariapack.
- -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.
myisamchk(1)
For more information, please refer to the MariaDB Knowledge Base,
available online at https://mariadb.com/kb/