From 7e0c84b84d80f9adb82bf99b92f6e94c7f3f060e Mon Sep 17 00:00:00 2001
From: Sage Weil <sage@inktank.com>
Date: Tue, 17 Dec 2013 12:21:41 -0800
Subject: [PATCH] mon/OSDMonitor: 'osd crush show-tunables'

Signed-off-by: Sage Weil <sage@inktank.com>
---
 qa/workunits/cephtool/test.sh |  2 ++
 src/mon/MonCommands.h         |  2 ++
 src/mon/OSDMonitor.cc         | 14 ++++++++++++++
 3 files changed, 18 insertions(+)

diff --git a/qa/workunits/cephtool/test.sh b/qa/workunits/cephtool/test.sh
index fe77205acf684..3f9a12da27a49 100755
--- a/qa/workunits/cephtool/test.sh
+++ b/qa/workunits/cephtool/test.sh
@@ -185,7 +185,9 @@ expect_false "ceph osd blacklist $bl/-1"
 expect_false "ceph osd blacklist $bl/foo"
 
 ceph osd crush tunables legacy
+ceph osd crush show-tunables | grep argonaut
 ceph osd crush tunables bobtail
+ceph osd crush show-tunables | grep bobtail
 
 # how do I tell when these are done?
 ceph osd scrub 0
diff --git a/src/mon/MonCommands.h b/src/mon/MonCommands.h
index 11da779a43d0e..ec1baf2d2bd9b 100644
--- a/src/mon/MonCommands.h
+++ b/src/mon/MonCommands.h
@@ -429,6 +429,8 @@ COMMAND("osd crush reweight " \
 COMMAND("osd crush tunables " \
 	"name=profile,type=CephChoices,strings=legacy|argonaut|bobtail|optimal|default", \
 	"set crush tunables values to <profile>", "osd", "rw", "cli,rest")
+COMMAND("osd crush show-tunables", \
+	"show current crush tunables", "osd", "r", "cli,rest")
 COMMAND("osd crush rule create-simple " \
 	"name=name,type=CephString,goodchars=[A-Za-z0-9-_.] " \
 	"name=root,type=CephString,goodchars=[A-Za-z0-9-_.] " \
diff --git a/src/mon/OSDMonitor.cc b/src/mon/OSDMonitor.cc
index 03f89728d3e42..35cb4fae261bd 100644
--- a/src/mon/OSDMonitor.cc
+++ b/src/mon/OSDMonitor.cc
@@ -2534,6 +2534,20 @@ stats_out:
     f->flush(rs);
     rs << "\n";
     rdata.append(rs.str());
+  } else if (prefix == "osd crush show-tunables") {
+    string format;
+    cmd_getval(g_ceph_context, cmdmap, "format", format, string("json-pretty"));
+    Formatter *fp = new_formatter(format);
+    if (!fp)
+      fp = new_formatter("json-pretty");
+    boost::scoped_ptr<Formatter> f(fp);
+    f->open_object_section("crush_map_tunables");
+    osdmap.crush->dump_tunables(f.get());
+    f->close_section();
+    ostringstream rs;
+    f->flush(rs);
+    rs << "\n";
+    rdata.append(rs.str());
   } else {
     // try prepare update
     return false;
-- 
2.39.5