From: Sage Weil <sage@redhat.com>
Date: Tue, 28 Feb 2017 00:50:52 +0000 (-0600)
Subject: osd/osd_types: add num_legacy_snapsets to stats struct
X-Git-Tag: v12.0.3~28^2~27
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=3862309d506297f482673f77e6788402fcfbcc53;p=ceph.git

osd/osd_types: add num_legacy_snapsets to stats struct

Signed-off-by: Sage Weil <sage@redhat.com>
---

diff --git a/src/osd/osd_types.cc b/src/osd/osd_types.cc
index 5ca5a5645bc1..b04064da1eaf 100644
--- a/src/osd/osd_types.cc
+++ b/src/osd/osd_types.cc
@@ -1883,11 +1883,12 @@ void object_stat_sum_t::dump(Formatter *f) const
   f->dump_int("num_evict_mode_some", num_evict_mode_some);
   f->dump_int("num_evict_mode_full", num_evict_mode_full);
   f->dump_int("num_objects_pinned", num_objects_pinned);
+  f->dump_int("num_legacy_snapsets", num_legacy_snapsets);
 }
 
 void object_stat_sum_t::encode(bufferlist& bl) const
 {
-  ENCODE_START(15, 14, bl);
+  ENCODE_START(16, 14, bl);
 #if defined(CEPH_LITTLE_ENDIAN)
   bl.append((char *)(&num_bytes), sizeof(object_stat_sum_t));
 #else
@@ -1925,6 +1926,7 @@ void object_stat_sum_t::encode(bufferlist& bl) const
   ::encode(num_evict_mode_full, bl);
   ::encode(num_objects_pinned, bl);
   ::encode(num_objects_missing, bl);
+  ::encode(num_legacy_snapsets, bl);
 #endif
   ENCODE_FINISH(bl);
 }
@@ -1932,9 +1934,9 @@ void object_stat_sum_t::encode(bufferlist& bl) const
 void object_stat_sum_t::decode(bufferlist::iterator& bl)
 {
   bool decode_finish = false;
-  DECODE_START(15, bl);
+  DECODE_START(16, bl);
 #if defined(CEPH_LITTLE_ENDIAN)
-  if (struct_v >= 15) {
+  if (struct_v >= 16) {
     bl.copy(sizeof(object_stat_sum_t), (char*)(&num_bytes));
     decode_finish = true;
   }
@@ -1974,6 +1976,11 @@ void object_stat_sum_t::decode(bufferlist::iterator& bl)
     ::decode(num_evict_mode_full, bl);
     ::decode(num_objects_pinned, bl);
     ::decode(num_objects_missing, bl);
+    if (struct_v >= 16) {
+      ::decode(num_legacy_snapsets, bl);
+    } else {
+      num_legacy_snapsets = num_object_clones;  // upper bound
+    }
   }
   DECODE_FINISH(bl);
 }
@@ -2052,6 +2059,7 @@ void object_stat_sum_t::add(const object_stat_sum_t& o)
   num_evict_mode_some += o.num_evict_mode_some;
   num_evict_mode_full += o.num_evict_mode_full;
   num_objects_pinned += o.num_objects_pinned;
+  num_legacy_snapsets += o.num_legacy_snapsets;
 }
 
 void object_stat_sum_t::sub(const object_stat_sum_t& o)
@@ -2090,6 +2098,7 @@ void object_stat_sum_t::sub(const object_stat_sum_t& o)
   num_evict_mode_some -= o.num_evict_mode_some;
   num_evict_mode_full -= o.num_evict_mode_full;
   num_objects_pinned -= o.num_objects_pinned;
+  num_legacy_snapsets -= o.num_legacy_snapsets;
 }
 
 bool operator==(const object_stat_sum_t& l, const object_stat_sum_t& r)
@@ -2128,7 +2137,8 @@ bool operator==(const object_stat_sum_t& l, const object_stat_sum_t& r)
     l.num_flush_mode_low == r.num_flush_mode_low &&
     l.num_evict_mode_some == r.num_evict_mode_some &&
     l.num_evict_mode_full == r.num_evict_mode_full &&
-    l.num_objects_pinned == r.num_objects_pinned;
+    l.num_objects_pinned == r.num_objects_pinned &&
+    l.num_legacy_snapsets == r.num_legacy_snapsets;
 }
 
 // -- object_stat_collection_t --
diff --git a/src/osd/osd_types.h b/src/osd/osd_types.h
index 93bdc4735d3a..a728a4d1a6af 100644
--- a/src/osd/osd_types.h
+++ b/src/osd/osd_types.h
@@ -1617,6 +1617,7 @@ struct object_stat_sum_t {
   int32_t num_evict_mode_full;  // 1 when in evict full mode, otherwise 0
   int64_t num_objects_pinned;
   int64_t num_objects_missing;
+  int64_t num_legacy_snapsets; ///< upper bound on pre-luminous-style SnapSets
 
   object_stat_sum_t()
     : num_bytes(0),
@@ -1644,7 +1645,8 @@ struct object_stat_sum_t {
       num_flush_mode_high(0), num_flush_mode_low(0),
       num_evict_mode_some(0), num_evict_mode_full(0),
       num_objects_pinned(0),
-      num_objects_missing(0)
+      num_objects_missing(0),
+      num_legacy_snapsets(0)
   {}
 
   void floor(int64_t f) {
@@ -1683,6 +1685,7 @@ struct object_stat_sum_t {
     FLOOR(num_evict_mode_some);
     FLOOR(num_evict_mode_full);
     FLOOR(num_objects_pinned);
+    FLOOR(num_legacy_snapsets);
 #undef FLOOR
   }
 
@@ -1693,7 +1696,14 @@ struct object_stat_sum_t {
       if (i < (PARAM % out.size())) {           \
 	out[i].PARAM++;                         \
       }                                         \
-    }                                           \
+    }
+#define SPLIT_PRESERVE_NONZERO(PARAM)		\
+    for (unsigned i = 0; i < out.size(); ++i) { \
+      if (PARAM)				\
+	out[i].PARAM = 1 + PARAM / out.size();	\
+      else					\
+	out[i].PARAM = 0;			\
+    }
 
     SPLIT(num_bytes);
     SPLIT(num_objects);
@@ -1729,7 +1739,9 @@ struct object_stat_sum_t {
     SPLIT(num_evict_mode_some);
     SPLIT(num_evict_mode_full);
     SPLIT(num_objects_pinned);
+    SPLIT_PRESERVE_NONZERO(num_legacy_snapsets);
 #undef SPLIT
+#undef SPLIT_PRESERVE_NONZERO
   }
 
   void clear() {
@@ -1784,7 +1796,8 @@ struct object_stat_sum_t {
         sizeof(num_evict_mode_some) +
         sizeof(num_evict_mode_full) +
         sizeof(num_objects_pinned) +
-        sizeof(num_objects_missing)
+        sizeof(num_objects_missing) +
+        sizeof(num_legacy_snapsets)
       ,
       "object_stat_sum_t have padding");
   }