2022-04-28: FG; Fixed reference to rclone page, add section for rclone about command.

web/support/kb/objstore/rclone_quick_tutorial.rst

@@ -83,6 +83,19 @@ Now you can verify your configuration with::
 
 The command above will most probably return no output, but the exit code should be 'zero'.
 
+Check total used space
+^^^^^^^^^^^^^^^^^^^^^^
+
+Unfortunately, at time of writing `rclone` capability of interfacing
+with the Ceph storage system is rather limited, and the command does
+not provide information on quota limits. However, it does provide
+information on the total used space::
+
+    $ rclone about garr-cloud:
+    Used:    190.364M
+    Objects: 19
+
+
 Copy files and directories to cloud
 -----------------------------------
 

web/support/kb/objstore/s3_quick_tutorial.rst

 S3 interface to object storage
 ==============================
 
-Instead of `Rclone <https://cloud.garr.it/support/kb/openstack/rclone_quick_tutorial/>`_,
+Instead of `Rclone <https://cloud.garr.it/support/kb/objstore/rclone_quick_tutorial/>`_,
 we can use s3 APIs to connect to object storage.
 You may use: