LU-14090 mgs: no local logs flag

[fs/lustre-release.git] / lustre / doc / tunefs.lustre.8

diff --git a/lustre/doc/tunefs.lustre.8 b/lustre/doc/tunefs.lustre.8
index 518e413..bde1071 100644 (file)
--- a/lustre/doc/tunefs.lustre.8
+++ b/lustre/doc/tunefs.lustre.8
@@ -1,7 +1,7 @@
 .\" -*- nroff -*-
 .\" Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 .\"
-.\" Copyright (c) 2011, 2016, Intel Corporation.
+.\" Copyright (c) 2011, 2017, Intel Corporation.
 .\"
 .\" This file may be copied under the terms of the GNU Public License, v2.
 .\"
@@ -134,6 +134,19 @@ Correct order of operations is:
 .br
 * Mount clients
 .TP
+.BI \--nolocallogs
+Use configuration logs from the MGS, not local ones.
+.br
+There is feature that starts a target with a local copy of
+the config log in order to avoid a delay in communicating with
+the MGS and to load MGS log updates later on.
+However, that feature is not always useful.
+.br
+replace_nids changes config logs on the server side and local copies
+become invalid. --nolocallogs sets the nolocallogs mount flag,
+which causes the local copy of the config log to be ignored.
+The flag is reset once new logs are downloaded from MGS.
+.TP
 .BI \--quota
 Enable space accounting on old 2.x devices.