SET GLOBAL innodb_compression_level=0;
SELECT @@innodb_compression_level;
@@innodb_compression_level
0
CREATE TABLE t1 (j LONGBLOB) ENGINE = InnoDB ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=1;
INSERT INTO t1 VALUES (repeat('abcdefghijklmnopqrstuvwxyz',200));
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
INSERT INTO t1 SELECT * from t1;
# stop the server

Variables (--variable-name=value)
and boolean options {FALSE|TRUE}  Value (after reading options)
--------------------------------- ----------------------------------------
verbose                           TRUE
debug                             FALSE
count                             FALSE
start-page                        0
end-page                          0
page                              0
no-check                          FALSE
allow-mismatches                  0
write                             FALSE
page-type-summary                 FALSE
page-type-dump                    MYSQLTEST_VARDIR/tmp/dump.txt
per-page-details                  FALSE
log                               (No default value)
leaf                              FALSE
merge                             0
[1]:# check the both short and long options for "help"
[2]:# Run the innochecksum when file isn't provided.
# It will print the innochecksum usage similar to --help option.
innochecksum Ver #.#.#
Copyright (c) YEAR, YEAR , Oracle, MariaDB Corporation Ab and others.

InnoDB offline file checksum utility.
Usage: innochecksum [-c] [-s <start page>] [-e <end page>] [-p <page>] [-i] [-v]  [-a <allow mismatches>] [-n] [-S] [-D <page type dump>] [-l <log>] [-l] [-m <merge pages>] <filename or [-]>
See https://mariadb.com/kb/en/library/innochecksum/ for usage hints.
  -?, --help          Displays this help and exits.
  -I, --info          Synonym for --help.
  -V, --version       Displays version information and exits.
  -v, --verbose       Verbose (prints progress every 5 seconds).
                      https://mariadb.com/kb/en/library/creating-a-trace-file/
  -c, --count         Print the count of pages in the file and exits.
  -s, --start-page=#  Start on this page number (0 based).
  -e, --end-page=#    End at this page number (0 based).
  -p, --page=#        Check only this page (0 based).
  -n, --no-check      Ignore the checksum verification.
  -a, --allow-mismatches=# 
                      Maximum checksum mismatch allowed.
  -w, --write         Rewrite the checksum.
  -S, --page-type-summary 
                      Display a count of each page type in a tablespace.
  -D, --page-type-dump=name 
                      Dump the page type info for each page in a tablespace.
  -i, --per-page-details 
                      Print out per-page detail information.
  -l, --log=name      log output.
  -f, --leaf          Examine leaf index pages
  -m, --merge=#       leaf page count if merge given number of consecutive
                      pages

Variables (--variable-name=value)
and boolean options {FALSE|TRUE}  Value (after reading options)
--------------------------------- ----------------------------------------
verbose                           FALSE
count                             FALSE
start-page                        0
end-page                          0
page                              0
no-check                          FALSE
allow-mismatches                  0
write                             FALSE
page-type-summary                 FALSE
page-type-dump                    (No default value)
per-page-details                  FALSE
log                               (No default value)
leaf                              FALSE
merge                             0
[3]:# check the both short and long options for "count" and exit
Number of pages:#
Number of pages:#
[4]:# Print the version of innochecksum and exit
innochecksum Ver #.#.## Restart the DB server
DROP TABLE t1;