1629
MySQLERRORNotableConfigurationHIGH confidence
The path specified is too long
Production Risk
Medium — MySQL may fail to start or create files if paths are too long.
What this means
A file system path provided to MySQL (e.g., for data directory, log file, or plugin directory) exceeds the maximum allowed length.
Why it happens
- 1The configured path for a file or directory is longer than the OS or MySQL limit.
- 2Deeply nested directory structures exceed PATH_MAX.
How to reproduce
trigger — this will error
trigger — this will error
-- Provide an excessively long path in my.cnf or SET statement
expected output
ERROR 1629 (HY000): The path specified for datadir is too long.
Fix
Shorten the path in configuration
Shorten the path in configuration
-- Edit my.cnf datadir = /var/lib/mysql
Why this works
Using a shorter path stays within the maximum allowed length.
Sources
Official documentation ↗
MySQL 8.0 — 1629 ER_PATH_LENGTH
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