Error
Error Code:
31
MySQL Error 31: File Ownership Change Failed
Description
MySQL Error 31 indicates that the MySQL server process attempted to change the ownership of a specific file or directory but failed due to an underlying operating system issue. This error typically occurs during installation, upgrades, data directory initialization, or when certain features require specific file permissions and ownership adjustments, preventing MySQL from operating correctly.
Error Message
Cannot change ownership of the file '%s' (OS errno %d - %s)
Known Causes
3 known causesInsufficient MySQL User Permissions
The operating system user account running the MySQL server process lacks the necessary privileges to modify file ownership for the specified file or directory.
File System Restrictions
The file system where the target file resides may be mounted as read-only, or it might be a network file system (NFS, SMB) that does not support ownership changes from the MySQL server's perspective.
Immutable File Attributes
The target file or directory has an immutable attribute set at the operating system level, preventing any changes to its ownership, permissions, or content.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service