From a6bcdbe13c25af3cf4bfd0849342fff5ffd75700 Mon Sep 17 00:00:00 2001
From: Alasdair G Kergon <agk@redhat.com>
Date: Wed, 7 Sep 2016 01:57:09 +0100
Subject: [PATCH] man: Additional info on exit statuses.

---
 man/lvm.8.in | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/man/lvm.8.in b/man/lvm.8.in
index da853494c..0db0ee40b 100644
--- a/man/lvm.8.in
+++ b/man/lvm.8.in
@@ -744,6 +744,11 @@ without % suffix), string.
 .SH DIAGNOSTICS
 .
 All tools return a status code of zero on success or non-zero on failure.
+The non-zero codes distinguish only between the broad categories of
+unrecognised commands, problems processing the command line arguments
+and any other failures.  As LVM remains under active development, the
+code used in a specific case occasionally changes between releases.
+Message text may also change.
 .
 .SH ENVIRONMENT VARIABLES
 .