doc: protection for 'fs volume rm' command

Fixes: https://github.com/ceph/ceph/pull/30381#discussion_r324866953
Signed-off-by: Jos Collin <jcollin@redhat.com>
(cherry picked from commit a58a6cde31fc5ce797385b1cf50dfffa381ce837)

diff --git a/doc/cephfs/fs-volumes.rst b/doc/cephfs/fs-volumes.rst
index 6b17b9490416b7181347cd953e8089829ea88a3b..af0f1154a81230c17f98108dd3181352b25f9412 100644 (file)
--- a/doc/cephfs/fs-volumes.rst
+++ b/doc/cephfs/fs-volumes.rst
@@ -51,7 +51,7 @@ module  (see :doc:`/mgr/orchestrator_cli`) , e.g., rook.
 
 Remove a volume using::
 
-    $ ceph fs volume rm <vol_name>
+    $ ceph fs volume rm <vol_name> [--yes-i-really-mean-it]
 
 This removes a file system and its data and metadata pools. It also tries to
 remove MDSes using the enabled ceph-mgr orchestrator module.