add Sync to the tracking store

chain/store/splitstore/snoop.go

@@ -13,6 +13,7 @@ type TrackingStore interface {
 	Get(cid.Cid) (abi.ChainEpoch, error)
 	Delete(cid.Cid) error
 	ForEach(func(cid.Cid, abi.ChainEpoch) error) error
+	Sync() error
 	Close() error
 }
 

chain/store/splitstore/snoop_bolt.go

@@ -22,6 +22,7 @@ func NewBoltTrackingStore(path string) (*BoltTrackingStore, error) {
 	db, err := bolt.Open(path, 0644,
 		&bolt.Options{
 			Timeout: 1 * time.Second,
+			NoSync:  true,
 		})
 	if err != nil {
 		return nil, err
@@ -97,6 +98,10 @@ func (s *BoltTrackingStore) ForEach(f func(cid.Cid, abi.ChainEpoch) error) error
 	})
 }
 
+func (s *BoltTrackingStore) Sync() error {
+	return s.db.Sync()
+}
+
 func (s *BoltTrackingStore) Close() error {
 	return s.db.Close()
 }

chain/store/splitstore/snoop_lmdb.go

@@ -155,6 +155,10 @@ func (s *LMDBTrackingStore) ForEach(f func(cid.Cid, abi.ChainEpoch) error) error
 		})
 }
 
+func (s *LMDBTrackingStore) Sync() error {
+	return nil
+}
+
 func (s *LMDBTrackingStore) Close() error {
 	s.env.CloseDBI(s.db)
 	return s.env.Close()

chain/store/splitstore/splitstore.go

@@ -633,6 +633,12 @@ func (s *SplitStore) compactFull() {
 	log.Infow("sweeping done", "took", time.Since(startSweep))
 	log.Infow("compaction stats", "hot", stHot, "cold", stCold, "dead", stDead)
 
+	err = s.snoop.Sync()
+	if err != nil {
+		// TODO do something better here
+		panic(err)
+	}
+
 	err = s.setBaseEpoch(coldEpoch)
 	if err != nil {
 		// TODO do something better here