diff --git a/bootstrap.sh b/bootstrap.sh
index f546a24..6a2a7a0 100755
--- a/bootstrap.sh
+++ b/bootstrap.sh
@@ -10,20 +10,19 @@ if [ "$?" = 0 ]; then
     exit 0
 fi
 
-go get github.com/siddontang/goleveldb/leveldb
-
 go get github.com/szferi/gomdb
 
 go get github.com/boltdb/bolt
 
 go get github.com/ugorji/go/codec
 go get github.com/BurntSushi/toml
+go get github.com/edsrzf/mmap-go
 
-
+go get github.com/siddontang/goleveldb/leveldb
 go get github.com/siddontang/go/bson
 go get github.com/siddontang/go/log
 go get github.com/siddontang/go/snappy
 go get github.com/siddontang/go/num
 go get github.com/siddontang/go/filelock
 go get github.com/siddontang/go/sync2
-go get github.com/siddontang/go/arena
\ No newline at end of file
+go get github.com/siddontang/go/arena
diff --git a/rpl/file_store.go b/rpl/file_store.go
index 127dd19..1c85846 100644
--- a/rpl/file_store.go
+++ b/rpl/file_store.go
@@ -22,20 +22,18 @@ const (
 
 /*
 	File Store:
-	0000001.data
-	0000001.meta
-	0000002.data
-	0000002.meta
+	00000001.log
+	00000002.log
 
-	data: log1 data | log2 data | magic data
-	meta: log1 pos in data | log2 pos in data
+	log: log1 data | log2 data | split data | log1 offset | log 2 offset | offset start pos | offset length | magic data
 
-	log id can not be 0, we use here for magic log
+	log id can not be 0, we use here for split data
 	if data has no magic data, it means that we don't close replication gracefully.
 	so we must repair the log data
-	magic data = log0 data
-
-	we use table to mangage data + meta pair
+	split data = log0 data
+	log0: id 0, create time 0, compression 0, data ""
+	//sha1 of github.com/siddontang/ledisdb 20 bytes
+	magic data = "\x1c\x1d\xb8\x88\xff\x9e\x45\x55\x40\xf0\x4c\xda\xe0\xce\x47\xde\x65\x48\x71\x17"
 
 	we must guarantee that the log id is monotonic increment strictly.
 	if log1's id is 1, log2 must be 2
diff --git a/rpl/file_table.go b/rpl/file_table.go
index 2a81ebf..92f1309 100644
--- a/rpl/file_table.go
+++ b/rpl/file_table.go
@@ -1,29 +1,12 @@
 package rpl
 
 import (
-	"fmt"
 	"os"
-	"path"
 )
 
 type table struct {
-	baseName string
-
-	index int64
-
-	readonly bool
-	df       *os.File
-	mf       *os.File
+	f *os.File
 
 	first uint64
 	last  uint64
 }
-
-func newReadTable(base string, index int64) (*table, error) {
-	t := new(table)
-
-	t.baseName = path.Join(base, fmt.Sprintf("%08d", index))
-	t.index = index
-
-	return t, nil
-}