Improve usage of pg_dump in backup

playbooks/roles/backup/files/hooks/postgresql

@@ -1,20 +1,19 @@
 #!/usr/bin/env bash
 
-cd "$1"
-
 if [ "$2" != "before" ]; then
 	exit 0
 fi
 
+cd "$1"
+
+sudo rm -r "$1"/*.dump || true
+sudo chown postgres:postgres "$1"
+
 postgres_tables=$(sudo -u postgres psql -Atc "SELECT datname FROM pg_database WHERE datistemplate = false;")
 
 for i in $postgres_tables
 do
 	printf "dumping %s ..." "$i"
-	sudo -u postgres pg_dump "$i" | gzip >"pg_dump_$i.sql.gz"
+	sudo -u postgres pg_dump -Fd -C -Zzstd:5 -j2 -f"pg_dump_$i.dump" "$i"
 	echo " done"
 done
-
-echo -n "dumping all ..."
-sudo -u postgres pg_dumpall | gzip >"pg_dumpall.sql.gz"
-echo " done"