From 80e0dfc1b96ad5294e3675a941fed8650250cacf Mon Sep 17 00:00:00 2001
From: Matthew Heler <matthew.heler@hotmail.com>
Date: Fri, 12 Oct 2018 10:43:51 -0500
Subject: [PATCH] Set report_discard_supported to true for the RBD Cinder
 backend.

This enables Ceph discard/trim support with cinder volumes.
Note: that you still need to use a paravirtualized storage backend that
supports discard/trim (virtio-scsi for example).

Change-Id: I7d564ac22ee8faedda0336ee5c67f8312c9f7d06
---
 cinder/values.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/cinder/values.yaml b/cinder/values.yaml
index 019938aae0..19289ef589 100644
--- a/cinder/values.yaml
+++ b/cinder/values.yaml
@@ -835,6 +835,7 @@ conf:
       rbd_pool: cinder.volumes
       rbd_ceph_conf: "/etc/ceph/ceph.conf"
       rbd_flatten_volume_from_snapshot: false
+      report_discard_supported: true
       rbd_max_clone_depth: 5
       rbd_store_chunk_size: 4
       rados_connect_timeout: -1