Force NFS to refresh attributes (kernel cache).

db_backuper.sh

@@ -4,7 +4,7 @@
 # Description : Backup PostgreSQL database called by cron or manually.
 # Usage       : ./db_backuper
 # Author      : syr4ok (Andrii Syrovatko)
-# Version     : 2.1.3r
+# Version     : 2.1.4r
 # =============================================================================
 
 # Stop script on pipeline errors
@@ -109,6 +109,8 @@ if [ "$IS_LOCAL_BACKUP" = false ]; then
 fi
 
 # 3. Check for duplicate directory
+# Force NFS to refresh attributes for the mount point (in case of NFS caching for some time)
+ls "${MNT_POINT}" > /dev/null 2>&1
 if [ -d "${DB_DIR}" ]; then
     msg="⚠️ DB backup stopped. Today's dir ($DB_DIR) already exists!"
     echo "$msg" | tee -a "${CACHE_FILE}"
@@ -152,6 +154,8 @@ else
 
     if cd /tmp/ && sudo -u "${PSQL_USER}" "${PSQL_COMMAND}" -p "${PSQL_PORT}" -D "${DB_DIR}" --checkpoint="${PSQL_CHECKPOINT}" -Ft -z ${EXT_STATUS_MSG} 2>&1 | tee -a "${CACHE_FILE}"; then
         # Checking whether the file was actually created (additional security measure)
+        # Force NFS to refresh attributes for the mount point (in case of NFS caching for some time)
+        ls "${MNT_POINT}" > /dev/null 2>&1
         if [ -d "${DB_DIR}" ]; then
             BACKUP_SUCCESS=true
             sync