diff --git a/newbrt/Makefile b/newbrt/Makefile
index 4a563d3d54f..cae5015bf28 100644
--- a/newbrt/Makefile
+++ b/newbrt/Makefile
@@ -80,14 +80,14 @@ pma-test benchmark-test brt-test brt-serialize-test: LDFLAGS+=-lz
 BRT_INTERNAL_H_INCLUDES = brt-internal.h cachetable.h hashtable.h pma.h brt.h brttypes.h yerror.h ybt.h log.h ../include/db.h kv-pair.h memory.h crc.h
 key.o: brttypes.h key.h
 pma-test.o: $(BRT_INTERNAL_H_INCLUDES) pma-internal.h pma.h list.h mempool.h
-pma-test: pma.o memory.o key.o ybt.o log.o mempool.o fingerprint.o brt-serialize.o hashtable.o primes.o
+pma-test: pma.o memory.o key.o ybt.o log.o mempool.o fingerprint.o brt-serialize.o hashtable.o primes.o log_code.o
 pma.o: pma.h yerror.h pma-internal.h memory.h key.h ybt.h brttypes.h log.h ../include/db.h
 ybt.o: ybt.h brttypes.h ../include/db.h
 ybt-test: ybt-test.o ybt.o memory.o
 ybt-test.o: ybt.h ../include/db.h
 cachetable.o: cachetable.h hashfun.h
-brt-test: ybt.o brt.o hashtable.o pma.o memory.o brt-serialize.o cachetable.o header-io.o ybt.o key.o primes.o log.o mempool.o brt-verify.o fingerprint.o
-log.o: log-internal.h log.h wbuf.h crc.h brttypes.h $(BRT_INTERNAL_H_INCLUDES)
+brt-test: ybt.o brt.o hashtable.o pma.o memory.o brt-serialize.o cachetable.o header-io.o ybt.o key.o primes.o log.o mempool.o brt-verify.o fingerprint.o log_code.o
+log.o: log_header.h log-internal.h log.h wbuf.h crc.h brttypes.h $(BRT_INTERNAL_H_INCLUDES)
 brt-test.o brt.o: brt.h ../include/db.h hashtable.h pma.h brttypes.h cachetable.h
 brt-serialize-test.o: $(BRT_INTERNAL_H_INCLUDES)
 brt.o: $(BRT_INTERNAL_H_INCLUDES)
@@ -105,7 +105,7 @@ log-test: log.o memory.o
 brt-verify.o: $(BRT_INTERNAL_H_INCLUDES)
 fingerprint.o: $(BRT_INTERNAL_H_INCLUDES)
 
-brt-serialize-test: brt-serialize-test.o brt-serialize.o memory.o hashtable.o pma.o key.o ybt.o brt.o cachetable.o primes.o log.o mempool.o brt-verify.o fingerprint.o
+brt-serialize-test: brt-serialize-test.o brt-serialize.o memory.o hashtable.o pma.o key.o ybt.o brt.o cachetable.o primes.o log.o mempool.o brt-verify.o fingerprint.o log_code.o
 
 
 
@@ -115,7 +115,7 @@ cachetable-test: cachetable.o memory.o cachetable-test.o primes.o
 cachetable-test2.o: cachetable.h memory.h
 cachetable-test2: cachetable.o memory.o cachetable-test2.o primes.o
 
-benchmark-test: benchmark-test.o ybt.o memory.o brt.o pma.o cachetable.o key.o hashtable.o brt-serialize.o primes.o log.o mempool.o brt-verify.o fingerprint.o
+benchmark-test: benchmark-test.o ybt.o memory.o brt.o pma.o cachetable.o key.o hashtable.o brt-serialize.o primes.o log.o mempool.o brt-verify.o fingerprint.o log_code.o
 benchmark-test.o: brt.h ../include/db.h
 
 clean:
diff --git a/newbrt/brt-internal.h b/newbrt/brt-internal.h
index f585ef6c3d0..fdd7cc5a2c1 100644
--- a/newbrt/brt-internal.h
+++ b/newbrt/brt-internal.h
@@ -1,3 +1,5 @@
+#ifndef BRT_INTERNAL_H
+#define BRT_INTERNAL_H
 #include "cachetable.h"
 #include "hashtable.h"
 #include "pma.h"
@@ -210,3 +212,4 @@ static const BRTNODE null_brtnode=0;
 extern u_int32_t toku_calccrc32_kvpair (const void *key, int keylen, const void *val, int vallen);
 extern u_int32_t toku_calccrc32_cmd (int type, const void *key, int keylen, const void *val, int vallen);
 extern u_int32_t toku_calccrc32_cmdstruct (BRT_CMD *cmd);
+#endif
diff --git a/newbrt/log.c b/newbrt/log.c
index b060c6b5f9a..966f91a4f66 100644
--- a/newbrt/log.c
+++ b/newbrt/log.c
@@ -15,6 +15,7 @@
 #include "wbuf.h"
 #include "memory.h"
 #include "../src/ydb-internal.h"
+#include "log_header.h"
 
 int tokulogger_find_next_unused_log_file(const char *directory, long long *result) {
     DIR *d=opendir(directory);
@@ -203,26 +204,10 @@ int tokulogger_log_phys_add_or_delete_in_leaf (DB *db, TOKUTXN txn, DISKOFF disk
     return tokulogger_finish(txn->logger, &wbuf);
 }
 
-int tokulogger_log_commit (TOKUTXN txn) {
-    struct wbuf wbuf;
-    const int buflen = (1 // log command
-			+8 // lsn
-			+8 // txnid
-			+8 // crc & len
-			);
-    unsigned char buf[buflen];
-    wbuf_init(&wbuf, buf, buflen);
-    wbuf_char(&wbuf, LT_COMMIT);
-    wbuf_LSN (&wbuf, txn->logger->lsn);
-    txn->logger->lsn.lsn++;
-    wbuf_TXNID(&wbuf, txn->txnid64);
-    int r = tokulogger_finish(txn->logger, &wbuf);
-    if (r!=0) return r;
-    int result;
-    if (txn->parent) result=0;
-    else result=tokulogger_fsync(txn->logger);
+int tokulogger_commit (TOKUTXN txn) {
+    int r = toku_log_commit(txn, txn->txnid64);
     toku_free(txn);
-    return result;
+    return r;
 }
 
 int tokulogger_log_checkpoint (TOKULOGGER logger, LSN *lsn) {
diff --git a/newbrt/log.h b/newbrt/log.h
index 42871051eb9..a9664124df7 100644
--- a/newbrt/log.h
+++ b/newbrt/log.h
@@ -10,7 +10,7 @@ int tokulogger_log_checkpoint (TOKULOGGER, LSN*);
 
 int tokulogger_log_phys_add_or_delete_in_leaf    (DB *db, TOKUTXN txn, DISKOFF diskoff, int is_add, const struct kv_pair *pair);
 
-int tokulogger_log_commit (TOKUTXN txn);
+int tokulogger_commit (TOKUTXN txn);
 
 int tokulogger_log_block_rename (TOKULOGGER /*logger*/, FILENUM /*fileid*/, DISKOFF /*olddiskoff*/, DISKOFF /*newdiskoff*/, DISKOFF /*parentdiskoff*/, int /*childnum*/);
 
diff --git a/newbrt/logformat.c b/newbrt/logformat.c
index ac1b5230610..702e8b882a3 100644
--- a/newbrt/logformat.c
+++ b/newbrt/logformat.c
@@ -112,7 +112,7 @@ void generate_log_struct (void) {
 
 void generate_log_writer (void) {
     DO_LOGTYPES(lt, ({
-			fprintf2(cf, hf, "int toku_log_%s (TOKUTXN txn, LSN lsn", lt->name);
+			fprintf2(cf, hf, "int toku_log_%s (TOKUTXN txn", lt->name);
 			DO_FIELDS(ft, lt,
 				  fprintf2(cf, hf, ", %s %s", ft->type, ft->name));
 			fprintf(hf, ");\n");
@@ -128,7 +128,8 @@ void generate_log_writer (void) {
 			fprintf(cf, "  if (buf==0) return errno;\n");
 			fprintf(cf, "  wbuf_init(&wbuf, buf, buflen);\n");
 			fprintf(cf, "  wbuf_char(&wbuf, '%c');\n", lt->command);
-			fprintf(cf, "  wbuf_LSN(&wbuf, lsn);\n");
+			fprintf(cf, "  wbuf_LSN(&wbuf, txn->logger->lsn);\n");
+			fprintf(cf, "  txn->logger->lsn.lsn++;;\n");
 			DO_FIELDS(ft, lt,
 				  fprintf(cf, "  wbuf_%s(&wbuf, %s);\n", ft->type, ft->name));
 			fprintf(cf, "  int r= tokulogger_finish(txn->logger, &wbuf);\n");
diff --git a/src/Makefile b/src/Makefile
index c3f18326692..6a0923c6ba3 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -26,7 +26,7 @@ clean:
 	rm -rf $(LIBNAME).$(LIBEXT) $(LIBNAME).a *.o
 
 ydb.o: ../include/db.h ../newbrt/cachetable.h ../newbrt/brt.h ../newbrt/log.c
-DBBINS = ydb.o ../newbrt/brt.o ../newbrt/brt-serialize.o ../newbrt/brt-verify.o ../newbrt/cachetable.o ../newbrt/hashtable.o ../newbrt/header-io.o ../newbrt/key.o ../newbrt/memory.o ../newbrt/mempool.o ../newbrt/pma.o ../newbrt/ybt.o ../newbrt/primes.o ../newbrt/log.o ../newbrt/fingerprint.o 
+DBBINS = ydb.o ../newbrt/brt.o ../newbrt/brt-serialize.o ../newbrt/brt-verify.o ../newbrt/cachetable.o ../newbrt/hashtable.o ../newbrt/header-io.o ../newbrt/key.o ../newbrt/memory.o ../newbrt/mempool.o ../newbrt/pma.o ../newbrt/ybt.o ../newbrt/primes.o ../newbrt/log.o ../newbrt/fingerprint.o ../newbrt/log_code.o
 
 $(LIBNAME).$(LIBEXT): $(DBBINS)
 	cc  $(CPPFLAGS) $(DBBINS) $(SHARED) -o $@ $(CFLAGS) -lz
diff --git a/src/ydb.c b/src/ydb.c
index 45e0ac3d836..b7b7871a90b 100644
--- a/src/ydb.c
+++ b/src/ydb.c
@@ -444,7 +444,7 @@ int __toku_db_txn_commit(DB_TXN * txn, u_int32_t flags) {
     //notef("flags=%d\n", flags);
     if (!txn)
         return -1;
-    int r = tokulogger_log_commit(txn->i->tokutxn);
+    int r = tokulogger_commit(txn->i->tokutxn);
     if (r != 0)
         return r;
     if (txn->i)