document shards=1 enforcement

diff --git a/docs/backends/lmdb.rst b/docs/backends/lmdb.rst
index c4a4f939ac43c337f53fff1ae3a7f849770278c2..03ef9623cd0d4068cbf11c9c49fa30678758205d 100644 (file)
--- a/docs/backends/lmdb.rst
+++ b/docs/backends/lmdb.rst
@@ -137,6 +137,7 @@ Run in Lightning Stream compatible mode. This:
 * forces ``flag-deleted`` on
 * forces ``random-ids`` on
 * handles duplicate entries in databases that can result from domains being added on two Lightning Stream nodes at the same time
+* aborts startup if ``shards`` is not set to ``1``
 
 LMDB Structure
 --------------