From a0b97e4640346794f95d74ea671bfdd78948cef6 Mon Sep 17 00:00:00 2001
From: Eric Harney <eharney@redhat.com>
Date: Tue, 13 Mar 2018 10:44:06 -0400
Subject: [PATCH] LVM: Enhance option descriptions

Add descriptions to lvm_type option values.

Change-Id: Id837ab544bae83defeb7ce5317282cabb60b1d09
---
 cinder/volume/drivers/lvm.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cinder/volume/drivers/lvm.py b/cinder/volume/drivers/lvm.py
index e8c21ec7acc..c5d80171059 100644
--- a/cinder/volume/drivers/lvm.py
+++ b/cinder/volume/drivers/lvm.py
@@ -53,7 +53,9 @@ volume_opts = [
                     'this requires lvm_mirrors + 2 PVs with available space'),
     cfg.StrOpt('lvm_type',
                default='auto',
-               choices=['default', 'thin', 'auto'],
+               choices=[('default', 'Thick-provisioned LVM.'),
+                        ('thin', 'Thin-provisioned LVM.'),
+                        ('auto', 'Defaults to thin when supported.')],
                help='Type of LVM volumes to deploy; (default, thin, or auto). '
                     'Auto defaults to thin if thin is supported.'),
     cfg.StrOpt('lvm_conf_file',