Have you encountered the problem of filesystem WAL files being cluttered?

Yes, the issue of WAL (Write-Ahead Logging) file system clutter does occur, especially with incorrect configuration or system failures. WAL files accumulate if timely archiving or cleanup does not happen, which can lead to disk filling up.

To resolve this issue, it is important to:

• Configure automatic archiving and deletion of old WAL files.
• Monitor database configuration parameters, such as wal_keep_segments, archive_mode, and archive_command in PostgreSQL.
• Regularly monitor disk usage and WAL status.

Example of archiving setup in PostgreSQL:

archive_mode = on
archive_command = 'cp %p /path_to_wal_archive/%f'

If archiving is misconfigured or not working, WAL files will accumulate, so it is important to check logs and the correctness of archiving scripts.