From 933d5084cb66f299a7bf60f0a2a6382c0bd3cb2f Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@redhat.com>
Date: Sun, 7 Apr 2019 13:54:59 -0500
Subject: [PATCH] common: add --log-early command line option

Sometime it is important and useful to see the logs from the bootstrap
phase where we are getting the initial configs from the monitors.  Add
a command-line option --log-early to do that.

Signed-off-by: Sage Weil <sage@redhat.com>
---
 src/common/config.cc        |  3 +++
 src/common/config_values.h  |  1 +
 src/global/global_init.cc   | 10 +++++++++-
 src/libcephfs.cc            |  5 +++++
 src/librados/RadosClient.cc |  5 +++++
 5 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/common/config.cc b/src/common/config.cc
index d1895a21c0b73..48b71dad1e2c9 100644
--- a/src/common/config.cc
+++ b/src/common/config.cc
@@ -570,6 +570,9 @@ int md_config_t::parse_argv(ConfigValues& values,
     else if (ceph_argparse_flag(args, i, "--no-mon-config", (char*)NULL)) {
       values.no_mon_config = true;
     }
+    else if (ceph_argparse_flag(args, i, "--log-early", (char*)NULL)) {
+      values.log_early = true;
+    }
     else if (ceph_argparse_flag(args, i, "--mon-config", (char*)NULL)) {
       values.no_mon_config = false;
     }
diff --git a/src/common/config_values.h b/src/common/config_values.h
index 51f7923533290..de1661ad10b82 100644
--- a/src/common/config_values.h
+++ b/src/common/config_values.h
@@ -28,6 +28,7 @@ public:
   std::string cluster;
   ceph::logging::SubsystemMap subsys;
   bool no_mon_config = false;
+  bool log_early = false;
   // Set of configuration options that have changed since the last
   // apply_changes
   using changed_set_t = std::set<std::string>;
diff --git a/src/global/global_init.cc b/src/global/global_init.cc
index abce4c05529b8..eb8bbfd1a4dbb 100644
--- a/src/global/global_init.cc
+++ b/src/global/global_init.cc
@@ -142,6 +142,11 @@ void global_pre_init(
   // command line (as passed by caller)
   conf.parse_argv(args);
 
+  if (conf->log_early &&
+      !cct->_log->is_started()) {
+    cct->_log->start();
+  }
+
   if (!conf->no_mon_config) {
     // make sure our mini-session gets legacy values
     conf.apply_changes(nullptr);
@@ -154,7 +159,10 @@ void global_pre_init(
       _exit(1);
     }
   }
-  cct->_log->start();
+  if (!cct->_log->is_started()) {
+    cct->_log->start();
+  }
+
   // do the --show-config[-val], if present in argv
   conf.do_argv_commands();
 
diff --git a/src/libcephfs.cc b/src/libcephfs.cc
index 6f75b2fff74e2..0f23fa8e120a8 100755
--- a/src/libcephfs.cc
+++ b/src/libcephfs.cc
@@ -79,6 +79,11 @@ public:
   {
     int ret;
 
+    if (cct->_conf->log_early &&
+	!cct->_log->is_started()) {
+      cct->_log->start();
+    }
+
     {
       MonClient mc_bootstrap(cct);
       ret = mc_bootstrap.get_monmap_and_config();
diff --git a/src/librados/RadosClient.cc b/src/librados/RadosClient.cc
index 446482e1af231..e232175998779 100644
--- a/src/librados/RadosClient.cc
+++ b/src/librados/RadosClient.cc
@@ -238,6 +238,11 @@ int librados::RadosClient::connect()
     return -EISCONN;
   state = CONNECTING;
 
+  if (cct->_conf->log_early &&
+      !cct->_log->is_started()) {
+    cct->_log->start();
+  }
+
   {
     MonClient mc_bootstrap(cct);
     err = mc_bootstrap.get_monmap_and_config();
-- 
2.47.3