AlloyDB Omni uses pgBackRest for its backup and restore related features.
This error can occur on a backup resource when pgBackRest failed to take the requested backup.
If it occurs, check the following logs for more information:
pgBackRest backup logs on the
obs
disk of the database Pod in the/obs/pgbackrest/db-backup.log
directoryPostgreSQL database logs on the
obs
disk of the database Pod in the/obs/diagnostic/postgresql.log
directory