Error
Error Code:
58P01
PostgreSQL Error 58P01: Undefined File System Error
Description
Error 58P01 indicates that PostgreSQL encountered an 'undefined file' system error. This typically means the database system attempted to access a file, directory, or path that does not exist or is inaccessible at the operating system level. It signifies an issue external to PostgreSQL's core database logic, often related to configuration or environment.
Error Message
undefined file
Known Causes
3 known causesMissing Configuration File Path
PostgreSQL configuration points to a file or directory (e.g., log file, data directory, archive location) that does not exist on the operating system.
Incorrect File Path in Query/Function
A SQL command, user-defined function, or external script attempts to access a file using an incorrect or non-existent path.
Unexpectedly Deleted or Moved File
A file or directory critical to PostgreSQL's operation, such as a data segment or a temporary file location, has been removed or relocated without the database's knowledge.
Solutions
3 solutions available1. Verify PostgreSQL Data Directory Permissions easy
Ensures the PostgreSQL user has read/write access to the data directory.
1
Identify the PostgreSQL data directory. You can usually find this in your `postgresql.conf` file or by running `SHOW data_directory;` in psql.
SHOW data_directory;2
Check the ownership and permissions of the identified data directory. The PostgreSQL process should be running as a specific user (often `postgres`).
ls -ld /path/to/your/pg_data_directory3
If permissions are incorrect, change them to grant ownership to the PostgreSQL user and appropriate read/write permissions. Replace `postgres` with your PostgreSQL user and `/path/to/your/pg_data_directory` with the actual path.
sudo chown -R postgres:postgres /path/to/your/pg_data_directory
sudo chmod 700 /path/to/your/pg_data_directory4
Restart the PostgreSQL service to apply the permission changes.
sudo systemctl restart postgresql2. Check for Corrupted or Missing WAL Files medium
Addresses issues with Write-Ahead Logging (WAL) files, which are crucial for recovery and transaction logging.
1
Locate the PostgreSQL data directory (as determined in the previous solution). Within this directory, find the `pg_wal` (or `pg_xlog` in older versions) subdirectory.
ls -l /path/to/your/pg_data_directory/pg_wal2
Examine the contents of the `pg_wal` directory for any signs of corruption, missing files, or unusually large files. Look for files with `.ready` or `.backup` extensions that might be interfering.
text3
If you suspect WAL file corruption, a common approach is to try to promote a standby server or, in extreme cases, recover from a backup. **Caution:** Directly manipulating WAL files can lead to data loss. Consult PostgreSQL documentation or an expert if unsure.
text4
If you have a recent backup, consider restoring from it. This is often the safest way to recover from significant WAL issues.
text3. Verify PostgreSQL Configuration File Integrity easy
Ensures the `postgresql.conf` and `pg_hba.conf` files are correctly formatted and accessible.
1
Locate your `postgresql.conf` file. This is typically found in the PostgreSQL data directory.
SHOW config_file;2
Open `postgresql.conf` in a text editor and review it for any syntax errors, incorrect paths, or invalid parameters. Pay close attention to any parameters referencing external files or directories.
text3
Similarly, locate and check `pg_hba.conf` for correct formatting and valid entries. Incorrect entries here can sometimes lead to unexpected file system errors during connection attempts.
SHOW hba_file;4
After making any necessary corrections, restart the PostgreSQL service.
sudo systemctl restart postgresql