backup_info of postgres backup remains blank

Though the backup is happening as scheduled the /var/lib/pgbackrest/backup_info.txt remains blank.

atomfeed-console.noarch 1.0-18 @bahmni bahmni-emr.noarch 0.89-333 @bahmni bahmni-erp.noarch 0.89-53 @bahmni bahmni-erp-connect.noarch 0.89-53 @bahmni bahmni-implementer-interface.noarch 0.89-103 @bahmni bahmni-installer.noarch 0.89-208 @/bahmni-installer-0.89-208.noarch bahmni-lab.noarch 0.89-75 @bahmni bahmni-lab-connect.noarch 0.89-333 @bahmni bahmni-openmrs.noarch 0.89-94 @bahmni bahmni-reports.noarch 0.89-65 @bahmni bahmni-web.noarch 0.89-333 @bahmni python-gdata.noarch 2.0.11-1.el6 @bahmni