From b9971e0eb3490d025c4db1b89342008820176775 Mon Sep 17 00:00:00 2001
From: Xiubo Li <xiubli@redhat.com>
Date: Mon, 14 Mar 2022 14:29:34 +0800
Subject: [PATCH] client: add option to enable and force collecting and sending
 metrics

To be careful to enable this because it may crash the old MDSes while
upgrading.

Fixes: https://tracker.ceph.com/issues/54411
Signed-off-by: Xiubo Li <xiubli@redhat.com>
(cherry picked from commit beb9f1648101bd18f3619c9fc7e972fab34dfc85)
---
 src/client/Client.cc                  |  7 +++++++
 src/client/Client.h                   |  1 +
 src/common/options/mds-client.yaml.in | 13 +++++++++++++
 3 files changed, 21 insertions(+)

diff --git a/src/client/Client.cc b/src/client/Client.cc
index 6231a337bcccc..100940e01393a 100644
--- a/src/client/Client.cc
+++ b/src/client/Client.cc
@@ -354,6 +354,9 @@ Client::Client(Messenger *m, MonClient *mc, Objecter *objecter_)
   fuse_default_permissions = cct->_conf.get_val<bool>(
     "fuse_default_permissions");
 
+  _collect_and_send_global_metrics = cct->_conf.get_val<bool>(
+    "client_collect_and_send_global_metrics");
+
   if (cct->_conf->client_acl_type == "posix_acl")
     acl_type = POSIX_ACL;
 
@@ -15742,6 +15745,10 @@ void Client::handle_conf_change(const ConfigProxy& conf,
   if (changed.count("client_oc_max_dirty_age")) {
     objectcacher->set_max_dirty_age(cct->_conf->client_oc_max_dirty_age);
   }
+  if (changed.count("client_collect_and_send_global_metrics")) {
+    _collect_and_send_global_metrics = cct->_conf.get_val<bool>(
+      "client_collect_and_send_global_metrics");
+  }
 }
 
 void intrusive_ptr_add_ref(Inode *in)
diff --git a/src/client/Client.h b/src/client/Client.h
index c3cfe09eb9b1e..84fc15d3fe879 100644
--- a/src/client/Client.h
+++ b/src/client/Client.h
@@ -888,6 +888,7 @@ public:
   std::unique_ptr<MDSMap> mdsmap;
 
   bool fuse_default_permissions;
+  bool _collect_and_send_global_metrics;
 
 protected:
   /* Flags for check_caps() */
diff --git a/src/common/options/mds-client.yaml.in b/src/common/options/mds-client.yaml.in
index 403e009752703..1881130f8316f 100644
--- a/src/common/options/mds-client.yaml.in
+++ b/src/common/options/mds-client.yaml.in
@@ -546,3 +546,16 @@ options:
   min: 0
   flags:
   - runtime
+- name: client_collect_and_send_global_metrics
+  type: bool
+  level: advanced
+  desc: to enable and force collecting and sending the global metrics to MDS
+  long_desc: To be careful for this, when connecting to some old ceph clusters
+    it may crash the MDS daemons while upgrading.
+  default: false
+  tags:
+  - client
+  services:
+  - mds_client
+  flags:
+  - runtime
-- 
2.39.5