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  1. MariaDB Server
  2. MDEV-34608

Temporary tablespace information missing in INFORMATION SCHEMA.INNODB_TABLESPACES_ENCRYPTION

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Details

    • Bug
    • Status: Stalled (View Workflow)
    • Major
    • Resolution: Unresolved
    • 10.6.16
    • 10.5, 10.6, 11.4
    • Encryption
    • None
    • RHEL Linux 4.18.0-513.24.1.el8_9.x86_64
      Openstack VM

    Description

      Hi,

      The innodb_temporary table space is not encrypted though innodb_encrypt_temporary_tables is enabled.

      See details below:

      While there are two innodb table spaces listed here (innodb_system and innodb_temporary), only innodb_system is present in the encryption table.

      MariaDB [WebNmsDB]> select * from information_schema.INNODB_SYS_TABLESPACES;
      +------------+------------------+------+------------+-----------+-----------+---------------+-----------+----------------+
      | SPACE      | NAME             | FLAG | ROW_FORMAT | PAGE_SIZE | FILENAME  | FS_BLOCK_SIZE | FILE_SIZE | ALLOCATED_SIZE |
      +------------+------------------+------+------------+-----------+-----------+---------------+-----------+----------------+
      |          0 | innodb_system    |   21 | NULL       |     16384 | ./ibdata1 |          4096 |  79691776 |       79695872 |
      | 4294967294 | innodb_temporary |   21 | NULL       |     16384 | ./ibtmp1  |          4096 |  12582912 |       12582912 |
      +------------+------------------+------+------------+-----------+-----------+---------------+-----------+----------------+
      2 rows in set (0.001 sec)
      

      MariaDB [WebNmsDB]> select * from information_schema.INNODB_TABLESPACES_ENCRYPTION\G
      *************************** 1. row ***************************
                             SPACE: 0
                              NAME: innodb_system
                 ENCRYPTION_SCHEME: 1
                KEYSERVER_REQUESTS: 1
                   MIN_KEY_VERSION: 1
               CURRENT_KEY_VERSION: 1
          KEY_ROTATION_PAGE_NUMBER: NULL
      KEY_ROTATION_MAX_PAGE_NUMBER: NULL
                    CURRENT_KEY_ID: 1
              ROTATING_OR_FLUSHING: 0
      1 row in set (0.001 sec)
      

      MariaDB [WebNmsDB]> WITH tablespace_ids AS (
          ->         SELECT SPACE
          ->         FROM information_schema.INNODB_SYS_TABLESPACES ist
          ->         UNION
          ->         /* information_schema.INNODB_SYS_TABLESPACES doesn't have a row for the system tablespace (MDEV-20802) */
          ->         SELECT 0 AS SPACE
          ->      )
          ->      SELECT NOW() as 'time', 
          ->         'tablespaces', COUNT(*) AS 'tablespaces', 
          ->         'encrypted', SUM(IF(ite.ENCRYPTION_SCHEME IS NOT NULL, ite.ENCRYPTION_SCHEME, 0)) AS 'encrypted', 
          ->         'encrypting', SUM(IF(ite.ROTATING_OR_FLUSHING IS NOT NULL, ite.ROTATING_OR_FLUSHING, 0)) AS 'encrypting'
          ->      FROM tablespace_ids
          ->      LEFT JOIN information_schema.INNODB_TABLESPACES_ENCRYPTION ite
          ->         ON tablespace_ids.SPACE = ite.SPACE;
      +---------------------+-------------+-------------+-----------+-----------+------------+------------+
      | time                | tablespaces | tablespaces | encrypted | encrypted | encrypting | encrypting |
      +---------------------+-------------+-------------+-----------+-----------+------------+------------+
      | 2024-07-17 10:23:10 | tablespaces |           2 | encrypted |         1 | encrypting |          0 |
      +---------------------+-------------+-------------+-----------+-----------+------------+------------+
      1 row in set (0.002 sec)
      

      The "innodb_encrypt_temporary_tables" is ON:

      MariaDB [WebNmsDB]> show variables like 'innodb_encrypt_temporary_tables';
      +---------------------------------+-------+
      | Variable_name                   | Value |
      +---------------------------------+-------+
      | innodb_encrypt_temporary_tables | ON    |
      +---------------------------------+-------+
      1 row in set (0.002 sec)
      

      The config file my.cnf is attached for your reference. Is there anything missing that causes innodb temporary tables not to be encrypted?

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            thiru Thirunarayanan Balathandayuthapani
            liberiul Andy Liu
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            Dates

              Created:
              Updated:

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