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   innochecksum    ( 1 )

автономная утилита контрольной суммы файла InnoDB (offline InnoDB file checksum utility)

Имя (Name)

innochecksum - offline InnoDB file checksum utility


Синопсис (Synopsis)

innochecksum [options] file_name


Описание (Description)

innochecksum prints checksums for InnoDB files. This tool reads an InnoDB tablespace file, calculates the checksum for each page, compares the calculated checksum to the stored checksum, and reports mismatches, which indicate damaged pages. It was originally developed to speed up verifying the integrity of tablespace files after power outages but can also be used after file copies. Because checksum mismatches will cause InnoDB to deliberately shut down a running server, it can be preferable to use this tool rather than waiting for a server in production usage to encounter the damaged pages.

innochecksum cannot be used on tablespace files that the server already has open. For such files, you should use CHECK TABLE to check tables within the tablespace.

If checksum mismatches are found, you would normally restore the tablespace from backup or start the server and attempt to use mysqldump to make a backup of the tables within the tablespace.

Invoke innochecksum like this:

shell> innochecksum [options] file_name

innochecksum supports the following options. For options that refer to page numbers, the numbers are zero-based.

-?, --help

Displays help and exits.

-c, --count

Print a count of the number of pages in the file.

-d, --debug

Debug mode; prints checksums for each page.

-e num, --end-page=#

End at this page number.

-i, --per-page-details

Print out per-page detail information.

-I, --info

Synonym for --help.

-l, --leaf

Examine leaf index pages.

-m num, --merge=#

Leaf page count if merge given number of consecutive pages.

-p num, --page-num=#

Check only this page number.

-s num, --start-page

Start at this page number.

-u, --skip-corrupt

Skip corrupt pages.

-v, --verbose

Verbose mode; print a progress indicator every five seconds.

-V, --version

Displays version information and exits.


Смотри также (See also)

For more information, please refer to the MariaDB Knowledge Base, available online at https://mariadb.com/kb/