[ovirt-users] oVirt 4.5.2 /var growing rapidly due to ovirt_engine_history db

Hi, We have recently upgrade our oVirt environment to 4.5.2 version. Environment is based on hosted-engine. Since we have upgrade we noticed rapid incrase in /var partition in engine VM. It is increasing very rapidly. If we vacuum ovirt_engine_history db, /var size reduces but next day size will increase again upto 5-10%. We did db vacuuming couple of time but not sure we it is increasing so rapidly. Here is the partial output of vacuuming that was done on 26-08-22. Table "host_interface_hourly_history" had more entries to be removed. Rest of the table had not much entries. Previously table "host_interface_samples_history" had entries to be removed. Any Idea what can be the reason for that? # dwh-vacuum -f -v SELECT pg_catalog.set_config('search_path', '', false); vacuumdb: vacuuming database "ovirt_engine_history" RESET search_path; SELECT c.relname, ns.nspname FROM pg_catalog.pg_class c JOIN pg_catalog.pg_namespace ns ON c.relnamespace OPERATOR(pg_catalog.=) ns.oid LEFT JOIN pg_catalog.pg_class t ON c.reltoastrelid OPERATOR(pg_catalog.=) t.oid WHERE c.relkind OPERATOR(pg_catalog.=) ANY (array['r', 'm']) ORDER BY c.relpages DESC; SELECT pg_catalog.set_config('search_path', '', false); VACUUM (FULL, VERBOSE) public.host_interface_samples_history; INFO: vacuuming "public.host_interface_samples_history" INFO: "host_interface_samples_history": found 3135 removable, 84609901 nonremovable row versions in 1564960 pages DETAIL: 0 dead row versions cannot be removed yet. CPU: user: 41.88 s, system: 14.93 s, elapsed: 422.83 s. VACUUM (FULL, VERBOSE) public.host_interface_hourly_history; INFO: vacuuming "public.host_interface_hourly_history" INFO: "host_interface_hourly_history": found 252422 removable, 39904650 nonremovable row versions in 473269 pages Please let me know if any further information is required. Regards Sohail