From 35e1ff5cf4a50594578ab8d13499789c2ccef351 Mon Sep 17 00:00:00 2001
From: Eric Harney <eharney@redhat.com>
Date: Tue, 30 Mar 2021 09:55:18 -0400
Subject: [PATCH] Set RBD default features based on distro

In some jobs, we run tests that use "rbd map".
On older kernels, this will not work if newer
RBD features are used.  (Specifically, fast-diff
on bionic.)

On older distros, enable fewer features by default.

Closes-Bug: #1921897
Change-Id: Iff1c5210b0279379eb9612b206bdf456dd6f132e
---
 devstack/lib/ceph | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/devstack/lib/ceph b/devstack/lib/ceph
index ba96bc0..5bdbddd 100755
--- a/devstack/lib/ceph
+++ b/devstack/lib/ceph
@@ -57,7 +57,11 @@ MDS_ID=${MDS_ID:-a}
 MGR_ID=${MGR_ID:-x}
 
 # RBD configuration defaults
-CEPH_RBD_DEFAULT_FEATURES=${CEPH_RBD_DEFAULT_FEATURES:-"layering, exclusive-lock, object-map, fast-diff"}
+if [[ ${DISTRO} =~ (bionic|xenial) ]]; then
+    CEPH_RBD_DEFAULT_FEATURES=${CEPH_RBD_DEFAULT_FEATURES:-"layering, exclusive-lock"}
+else
+    CEPH_RBD_DEFAULT_FEATURES=${CEPH_RBD_DEFAULT_FEATURES:-"layering, exclusive-lock, object-map, fast-diff"}
+fi
 
 # Glance
 GLANCE_CEPH_USER=${GLANCE_CEPH_USER:-glance}