Merge pull request ceph#58838 from idryomov/wip-rbd-lock-incompat-note

doc/rbd/rbd-exclusive-locks: mention incompatibility with advisory locks

Reviewed-by: Ramana Raja <[email protected]>
Reviewed-by: Zac Dover <[email protected]>

Author: idryomov

doc/rbd/rbd-exclusive-locks.rst

@@ -60,6 +60,10 @@ Exclusive locking is mostly transparent to the user:
    exclusive lock. This is exposed by the ``--exclusive`` option for ``rbd
    device map`` command.
 
+.. note::
+   The ``exclusive-lock`` feature is incompatible with RBD advisory locks
+   (the ``rbd lock add`` and ``rbd lock rm`` commands).
+
 
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