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  1. MariaDB Server
  2. MDEV-33469

Server incorrectly describes known variables as UNKNOWN if invalid values are specified at startup

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    Description

      MariaDB gives a misleading error message if you specify an invalid value for a known system variable on the command line.

      Take innodb-log-file-size as an example variable:

      Known variable, legal value:

      $ sql/mariadbd ... --innodb-log-file-size=1000000
      		 
      ...
      		 
      2024-02-15 13:05:18 0 [Note] sql/mariadbd: ready for connections.

      Known variable, invalid values:

      $ sql/mariadbd ... --innodb-log-file-size=-123                             # <- Not legal because negative
      		 
      ...
      		 
      2024-02-15 13:06:25 0 [ERROR] sql/mariadbd: unknown variable 'innodb-log-file-size=-123'
      		 

      $ sql/mariadbd ... --innodb-log-file-size=999999999999999999999999999      # <- Not legal because it's too large
      		 
      ...
      		 
      2024-02-15 13:06:59 0 [ERROR] sql/mariadbd: unknown variable 'innodb-log-file-size=999999999999999999999999999'

      Solution

      Instead of reporting this as an "unknown variable", it should be reported as an "invalid value."
      The code that produces this misleading error message is at https://github.com/MariaDB/server/blob/e71aecfd308d6093fd693044253518a872994394/mysys/my_getopt.c#L389

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          is duplicated by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-25386 MDEV-22219 Followup: small inconsistency in option handling

          • Major - Major loss of function.
          • Confirmed
          relates to

          Bug - A problem which impairs or prevents the functions of the product. MDEV-26923 MariaDB will abort server startup if it finds an invalid parameter, but won't check for other invalid params

          • Minor - Minor loss of function, or other problem where easy workaround is present.
          • Closed

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              TheLinuxJedi Andrew Hutchings
              dlenski Daniel Lenski
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                Updated:
                Resolved:

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