NOTICE:  pg_stop_backup cleanup done, waiting for required WAL segments to be archived
WARNING:  pg_stop_backup still waiting for all required WAL segments to be archived (60 seconds elapsed)
ПОДСКАЗКА:  Check that your archive_command is executing properly.  pg_stop_backup can be canceled safely, but the database backup will not be usable without all the WAL segments.

SHOW archive_mode;
SHOW archive_command;

on

test ! -f  /backups/db_backup_buf_dvr/%f && cp %p /backups/db_backup_buf_dvr/%f