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      • Limiting the disk space used by binary log files
        • binlog_space_limit
        • Example
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    • binlog_space_limit
    • Example

    Limiting the disk space used by binary log files¶

    It is a challenge to control how much disk space is used by the binary logs. The size of a binary log can vary because a single transaction must be written to a single binary log and cannot be split between multiple binary log files.

    binlog_space_limit¶

    Attribute Description
    Uses the command line Yes
    Uses the configuration file Yes
    Scope Global
    Dynamic No
    Variable type ULONG_MAX
    Default value 0 (unlimited)
    Maximum value - 64-bit platform 18446744073709547520

    This variable places an upper limit on the total size in bytes of all binary logs. When the limit is reached, the oldest binary logs are purged until the total size is under the limit or only the active log remains.

    The default value of 0 disables the feature. No limit is set on the log space. The binary logs accumulate indefinitely until the disk space is full.

    Example¶

    Set the binlog_space_limit to 50 GB in the my.cnf file:

    [mysqld]
    ...
    binlog_space_limit = 50G
    ...
    

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    Last update: 2022-09-22
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