diff --git a/source/smbd/files.c b/source/smbd/files.c
index cdaa5f1..12467ee 100644
--- a/source/smbd/files.c
+++ b/source/smbd/files.c
@@ -408,6 +408,10 @@ bool file_find_subpath(files_struct *dir_fsp)
 					fsp->fsp_name);
 
 		if (strnequal(d_fullname, d1_fullname, dlen)) {
+			DEBUG(10,("file_find_subpath: name %s matches %s, "
+				"len %u, fsp->fsp_name = %s\n",
+				d1_fullname, d_fullname,
+				(unsigned int)dlen, fsp->fsp_name));
 			TALLOC_FREE(d_fullname);
 			TALLOC_FREE(d1_fullname);
 			return true;
diff --git a/source/smbd/reply.c b/source/smbd/reply.c
index 46653cd..87ace41 100644
--- a/source/smbd/reply.c
+++ b/source/smbd/reply.c
@@ -2276,6 +2276,9 @@ static NTSTATUS can_rename(connection_struct *conn, files_struct *fsp,
 		   directory, allow the rename. */
 
 		if (file_find_subpath(fsp)) {
+			DEBUG(10,("can_rename: file_find_subpath found an "
+				"open file below %s\n",
+				fsp->fsp_name ));
 			return NT_STATUS_ACCESS_DENIED;
 		}
 		return NT_STATUS_OK;
@@ -2285,6 +2288,11 @@ static NTSTATUS can_rename(connection_struct *conn, files_struct *fsp,
 		return NT_STATUS_OK;
 	}
 
+	DEBUG(10,("can_rename: fsp->access_mask = 0x%x on file "
+			"%s - access denied\n",
+			(unsigned int)fsp->access_mask,
+			fsp->fsp_name ));
+
 	return NT_STATUS_ACCESS_DENIED;
 }
 
@@ -5643,7 +5651,8 @@ NTSTATUS rename_internals_fsp(connection_struct *conn,
 	status = can_rename(conn, fsp, attrs, &sbuf);
 
 	if (!NT_STATUS_IS_OK(status)) {
-		DEBUG(3,("rename_internals_fsp: Error %s rename %s -> %s\n",
+		DEBUG(3,("rename_internals_fsp: can_rename returned error %s "
+			"rename %s -> %s\n",
 			nt_errstr(status), fsp->fsp_name,newname));
 		if (NT_STATUS_EQUAL(status,NT_STATUS_SHARING_VIOLATION))
 			status = NT_STATUS_ACCESS_DENIED;
@@ -5694,6 +5703,9 @@ NTSTATUS rename_internals_fsp(connection_struct *conn,
 		}
 		TALLOC_FREE(lck);
 		return NT_STATUS_OK;
+	} else {
+		DEBUG(3,("rename_internals_fsp: VFS error %s rename %s -> %s\n",
+			strerror(errno), fsp->fsp_name,newname));
 	}
 
 	TALLOC_FREE(lck);