From 9c14446e81a0071c60b48e4ef13dd91217c6afdd Mon Sep 17 00:00:00 2001
From: Victoria Martinez de la Cruz <victoria@redhat.com>
Date: Wed, 7 Oct 2020 20:37:52 -0300
Subject: [PATCH] Disable caching done by ganesha

Disable caching done by ganesha when ganesha
is used as CephFS's gateway (manila's usecase)

This is the recommended Ganesha setting as libcephfs
already caches information. Doing so helps avoid
cache incoherency issues.

Change-Id: Iacd575ac61b39ab9dcf8814514b5e3267570a17f
Closes-Bug: #1898950
---
 devstack/lib/ceph | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/devstack/lib/ceph b/devstack/lib/ceph
index fbe6ce0..9b741bc 100755
--- a/devstack/lib/ceph
+++ b/devstack/lib/ceph
@@ -776,6 +776,21 @@ RADOS_URLS {
     ceph_conf = ${CEPH_CONF_FILE};
     userid = admin;
 }
+
+CACHEINODE {
+        Dir_Max = 1;
+        Dir_Chunk = 0;
+
+        Cache_FDs = false;
+
+        NParts = 1;
+        Cache_Size = 1;
+}
+
+EXPORT_DEFAULTS {
+        Attr_Expiration_Time = 0;
+}
+
 %url rados://${CEPHFS_DATA_POOL}/ganesha-export-index
 EOF
     else