osd: add last_archived_bloom to pg_info_t

This field will track the most recent eversion recorded in an archived
bloom_filter.  Any events after this point in the pg log have not yet been
archived and should therefore be included in the in-memory bloom filter.

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

2 files changed, 12 insertions, 2 deletions

diff --git a/src/osd/osd_types.cc b/src/osd/osd_types.cc
index 589dcaed67f..0f88cc2ac82 100644
--- a/src/osd/osd_types.cc
+++ b/src/osd/osd_types.cc
@@ -1654,7 +1654,7 @@ void pg_history_t::generate_test_instances(list<pg_history_t*>& o)
 
 void pg_info_t::encode(bufferlist &bl) const
 {
-  ENCODE_START(28, 26, bl);
+  ENCODE_START(29, 26, bl);
   ::encode(pgid, bl);
   ::encode(last_update, bl);
   ::encode(last_complete, bl);
@@ -1665,12 +1665,13 @@ void pg_info_t::encode(bufferlist &bl) const
   ::encode(purged_snaps, bl);
   ::encode(last_epoch_started, bl);
   ::encode(last_user_version, bl);
+  ::encode(last_archived_bloom, bl);
   ENCODE_FINISH(bl);
 }
 
 void pg_info_t::decode(bufferlist::iterator &bl)
 {
-  DECODE_START_LEGACY_COMPAT_LEN(28, 26, 26, bl);
+  DECODE_START_LEGACY_COMPAT_LEN(29, 26, 26, bl);
   if (struct_v < 23) {
     old_pg_t opgid;
     ::decode(opgid, bl);
@@ -1704,6 +1705,10 @@ void pg_info_t::decode(bufferlist::iterator &bl)
     ::decode(last_user_version, bl);
   else
     last_user_version = last_update.version;
+  if (struct_v >= 29)
+    ::decode(last_archived_bloom, bl);
+  else
+    last_archived_bloom = eversion_t();
   DECODE_FINISH(bl);
 }
 
@@ -1729,6 +1734,7 @@ void pg_info_t::dump(Formatter *f) const
   f->dump_int("dne", dne());
   f->dump_int("incomplete", is_incomplete());
   f->dump_int("last_epoch_started", last_epoch_started);
+  f->dump_stream("last_archived_bloom") << last_archived_bloom;
 }
 
 void pg_info_t::generate_test_instances(list<pg_info_t*>& o)
diff --git a/src/osd/osd_types.h b/src/osd/osd_types.h
index e5631b2c67e..c66d75c68b1 100644
--- a/src/osd/osd_types.h
+++ b/src/osd/osd_types.h
@@ -1369,6 +1369,8 @@ struct pg_info_t {
   
   version_t last_user_version; // last user object version applied to store
 
+  eversion_t last_archived_bloom;   ///< last update in an archived bloom filter
+
   eversion_t log_tail;     // oldest log entry.
 
   hobject_t last_backfill;   // objects >= this and < last_complete may be missing
@@ -1415,6 +1417,8 @@ inline ostream& operator<<(ostream& out, const pg_info_t& pgi)
     out << " (" << pgi.log_tail << "," << pgi.last_update << "]";
     if (pgi.is_incomplete())
       out << " lb " << pgi.last_backfill;
+    if (pgi.last_archived_bloom != eversion_t())
+      out << " lab " << pgi.last_archived_bloom;
   }
   //out << " c " << pgi.epoch_created;
   out << " local-les=" << pgi.last_epoch_started;