Provided by: mysql-server-core-8.0_8.0.31-0ubuntu2_amd64 
NAME
ibd2sdi - InnoDB utility for extracting serialized dictionary information (SDI) from an
InnoDB tablespace
SYNOPSIS
ibd2sdi [options] file_name1 [file_name2 file_name3 ...]
DESCRIPTION
ibd2sdi is a utility for extracting serialized dictionary information (SDI) from InnoDB
tablespace files. SDI data is present in all persistent InnoDB tablespace files.
ibd2sdi can be run on file-per-table tablespace files (*.ibd files), general tablespace
files (*.ibd files), system tablespace files (ibdata* files), and the data dictionary
tablespace (mysql.ibd). It is not supported for use with temporary tablespaces or undo
tablespaces.
ibd2sdi can be used at runtime or while the server is offline. During DDL operations,
ROLLBACK operations, and undo log purge operations related to SDI, there may be a short
interval of time when ibd2sdi fails to read SDI data stored in the tablespace.
ibd2sdi performs an uncommitted read of SDI from the specified tablespace. Redo logs and
undo logs are not accessed.
Invoke the ibd2sdi utility like this:
ibd2sdi [options] file_name1 [file_name2 file_name3 ...]
ibd2sdi supports multi-file tablespaces like the InnoDB system tablespace, but it cannot
be run on more than one tablespace at a time. For multi-file tablespaces, specify each
file:
ibd2sdi ibdata1 ibdata2
The files of a multi-file tablespace must be specified in order of the ascending page
number. If two successive files have the same space ID, the later file must start with the
last page number of the previous file + 1.
ibd2sdi outputs SDI (containing id, type, and data fields) in JSON format. ibd2sdi
Options
ibd2sdi supports the following options:
• --help, -h Display a help message and exit. For example:
Usage: ./ibd2sdi [-v] [-c <strict-check>] [-d <dump file name>] [-n] filename1 [filenames]
See http://dev.mysql.com/doc/refman/8.0/en/ibd2sdi.html for usage hints.
-h, --help Display this help and exit.
-v, --version Display version information and exit.
-#, --debug[=name] Output debug log. See
http://dev.mysql.com/doc/refman/8.0/en/dbug-package.html
-d, --dump-file=name
Dump the tablespace SDI into the file passed by user.
Without the filename, it will default to stdout
-s, --skip-data Skip retrieving data from SDI records. Retrieve only id
and type.
-i, --id=# Retrieve the SDI record matching the id passed by user.
-t, --type=# Retrieve the SDI records matching the type passed by
user.
-c, --strict-check=name
Specify the strict checksum algorithm by the user.
Allowed values are innodb, crc32, none.
-n, --no-check Ignore the checksum verification.
-p, --pretty Pretty format the SDI output.If false, SDI would be not
human readable but it will be of less size
(Defaults to on; use --skip-pretty to disable.)
Variables (--variable-name=value)
and boolean options {FALSE|TRUE} Value (after reading options)
--------------------------------- ----------------------------------------
debug (No default value)
dump-file (No default value)
skip-data FALSE
id 0
type 0
strict-check crc32
no-check FALSE
pretty TRUE
• --version, -v Display version information and exit. For example:
ibd2sdi Ver 8.0.3-dmr for Linux on x86_64 (Source distribution)
• --debug[=debug_options], -# [debug_options] Prints a debug log. For debug options,
refer to Section 5.9.4, “The DBUG Package”.
ibd2sdi --debug=d:t /tmp/ibd2sdi.trace
This option is available only if MySQL was built using WITH_DEBUG. MySQL release
binaries provided by Oracle are not built using this option.
• --dump-file=, -d Dumps serialized dictionary information (SDI) into the specified dump
file. If a dump file is not specified, the tablespace SDI is dumped to stdout.
ibd2sdi --dump-file=file_name ../data/test/t1.ibd
• --skip-data, -s Skips retrieval of data field values from the serialized dictionary
information (SDI) and only retrieves the id and type field values, which are primary
keys for SDI records.
$> ibd2sdi --skip-data ../data/test/t1.ibd
["ibd2sdi"
,
{
"type": 1,
"id": 330
}
,
{
"type": 2,
"id": 7
}
]
• --id=#, -i # Retrieves serialized dictionary information (SDI) matching the specified
table or tablespace object id. An object id is unique to the object type. Table and
tablespace object IDs are also found in the id column of the mysql.tables and
mysql.tablespace data dictionary tables. For information about data dictionary tables,
see Section 14.1, “Data Dictionary Schema”.
$> ibd2sdi --id=7 ../data/test/t1.ibd
["ibd2sdi"
,
{
"type": 2,
"id": 7,
"object":
{
"mysqld_version_id": 80003,
"dd_version": 80003,
"sdi_version": 1,
"dd_object_type": "Tablespace",
"dd_object": {
"name": "test/t1",
"comment": "",
"options": "",
"se_private_data": "flags=16417;id=2;server_version=80003;space_version=1;",
"engine": "InnoDB",
"files": [
{
"ordinal_position": 1,
"filename": "./test/t1.ibd",
"se_private_data": "id=2;"
}
]
}
}
}
]
• --type=#, -t # Retrieves serialized dictionary information (SDI) matching the
specified object type. SDI is provided for table (type=1) and tablespace (type=2)
objects.
$> ibd2sdi --type=2 ../data/test/t1.ibd
["ibd2sdi"
,
{
"type": 2,
"id": 7,
"object":
{
"mysqld_version_id": 80003,
"dd_version": 80003,
"sdi_version": 1,
"dd_object_type": "Tablespace",
"dd_object": {
"name": "test/t1",
"comment": "",
"options": "",
"se_private_data": "flags=16417;id=2;server_version=80003;space_version=1;",
"engine": "InnoDB",
"files": [
{
"ordinal_position": 1,
"filename": "./test/t1.ibd",
"se_private_data": "id=2;"
}
]
}
}
}
]
• --strict-check, -c Specifies a strict checksum algorithm for validating the checksum
of pages that are read. Options include innodb, crc32, and none.
In this example, the strict version of the innodb checksum algorithm is specified:
ibd2sdi --strict-check=innodb ../data/test/t1.ibd
In this example, the strict version of crc32 checksum algorithm is specified:
ibd2sdi -c crc32 ../data/test/t1.ibd
If you do not specify the --strict-check option, validation is performed against
non-strict innodb, crc32 and none checksums.
• --no-check, -n Skips checksum validation for pages that are read.
ibd2sdi --no-check ../data/test/t1.ibd
• --pretty, -p Outputs SDI data in JSON pretty print format. Enabled by default. If
disabled, SDI is not human readable but is smaller in size. Use --skip-pretty to
disable.
ibd2sdi --skip-pretty ../data/test/t1.ibd
COPYRIGHT
Copyright © 1997, 2022, Oracle and/or its affiliates.
This documentation is free software; you can redistribute it and/or modify it only under
the terms of the GNU General Public License as published by the Free Software Foundation;
version 2 of the License.
This documentation is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with the program;
if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/.
SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be
installed locally and which is also available online at http://dev.mysql.com/doc/.
AUTHOR
Oracle Corporation (http://dev.mysql.com/).