diff --git a/.travis.yml b/.travis.yml
index 68080aba..db3dbaa7 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,12 +7,15 @@ env:
         - PROTOBUF_VERSION=2.6.0
 
 install:
+    - sudo pip install --user cpp-coveralls
     - echo | sudo apt-add-repository ppa:boost-latest/ppa
     - sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test
     - sudo apt-get update
-    - sudo apt-get install -qq g++-4.8
+    - sudo apt-get install -qq g++-4.8 lcov
     - sudo update-alternatives --install /usr/bin/g++ g++ /usr/bin/g++-4.8 20 
+    - sudo update-alternatives --install /usr/bin/gcov gcov /usr/bin/gcov-4.8 20 
     - sudo update-alternatives --config g++
+    - sudo update-alternatives --config gcov
 
     - sudo apt-get install libboost-dev
     - wget https://github.com/google/protobuf/releases/download/v$PROTOBUF_VERSION/protobuf-$PROTOBUF_VERSION.tar.gz
@@ -44,22 +47,29 @@ install:
 
 
 before_script:
-    - echo 'SNAPPY_PATH=./thirdparty/snappy' > depends.mk
-    - echo 'PROTOBUF_PATH=./thirdparty/protobuf' >> depends.mk
-    - echo 'PROTOC=protoc' >> depends.mk
-    - echo 'PBRPC_PATH=./thirdparty/sofa-pbrpc/output' >> depends.mk
-    - echo 'TCMALLOC_PATH=./thirdparty' >> depends.mk
-    - echo 'COMMON_PATH=./common/output' >> depends.mk
-    - echo 'LEVELDB_PATH=./thirdparty' >> depends.mk
+    - export WORK_DIR=`pwd`
+    - echo $WORK_DIR
+    - echo "WORK_PATH=$WORK_DIR" > depends.mk
+    - echo "SNAPPY_PATH=$WORK_DIR/thirdparty/snappy" >> depends.mk
+    - echo "PROTOBUF_PATH=$WORK_DIR/thirdparty/protobuf" >> depends.mk
+    - echo "PROTOC=protoc" >> depends.mk
+    - echo "PBRPC_PATH=$WORK_DIR/thirdparty/sofa-pbrpc/output" >> depends.mk
+    - echo "TCMALLOC_PATH=$WORK_DIR/thirdparty" >> depends.mk
+    - echo "COMMON_PATH=$WORK_DIR/common/output" >> depends.mk
+    - echo "LEVELDB_PATH=$WORK_DIR/thirdparty" >> depends.mk
+    - sed -i "/-lpthread -lz -lrt/s/$/ -lgcov/g" Makefile
+    - sed -i "/CXXFLAGS =/s/$/ -fprofile-arcs -ftest-coverage/g" Makefile
 
 script: make -j4 && make check && make test
 
 addons:
-   coverity_scan:
-       project:
-           name: "bluebore/bfs"
-       notification_email: yanshiguang02@baidu.com
-       build_command_prepend: "make clean"
-       build_command: "make -j4"
-       branch_pattern: master
+    coverity_scan:
+        project:
+            name: "bluebore/bfs"
+        notification_email: yanshiguang02@baidu.com
+        build_command_prepend: "make clean"
+        build_command: "make -j4"
+        branch_pattern: master
 
+after_script:
+     - COVERALLS_REPO_TOKEN=TnLIOj8lpAgN6CjpeGSDpXsu5IF5Bmluo find . -name *.gc* | xargs rm -f && make clean && make -j4 && make check && sudo ~/.local/bin/cpp-coveralls -e src/chunkserver/test -e src/nameserver/test -e thirdparty/ -e thirdsrc/ -e ut/ -e src/proto --gcov-options '\-lpr'
diff --git a/Makefile b/Makefile
index 33b4a375..bd9babe7 100644
--- a/Makefile
+++ b/Makefile
@@ -6,7 +6,7 @@ OPT ?= -g2 -Werror # (B) Debug mode, w/ full line-level debugging symbols
 include depends.mk
 #CXX=/opt/compiler/gcc-4.8.2/bin/g++
 
-INCLUDE_PATH = -I./src -I$(PROTOBUF_PATH)/include \
+INCLUDE_PATH = -I$(WORK_PATH)/src -I$(PROTOBUF_PATH)/include \
                -I$(PBRPC_PATH)/include \
                -I$(LEVELDB_PATH)/include \
                -I$(SNAPPY_PATH)/include \
diff --git a/README.md b/README.md
index 6dff82e5..336243e5 100644
--- a/README.md
+++ b/README.md
@@ -1,7 +1,7 @@
 [The Baidu File System](http://github.com/baidu/bfs)
 ======
 
- [![Build Status](https://travis-ci.org/baidu/bfs.svg?branch=master)](https://travis-ci.org/baidu/bfs)  [![Build Status](https://scan.coverity.com/projects/8135/badge.svg)](https://scan.coverity.com/projects/myawan-bfs-1/) 
+ [![Build Status](https://travis-ci.org/baidu/bfs.svg?branch=master)](https://travis-ci.org/baidu/bfs)  [![Build Status](https://scan.coverity.com/projects/8135/badge.svg)](https://scan.coverity.com/projects/myawan-bfs-1/)  [![Coverage Status](https://coveralls.io/repos/github/baidu/bfs/badge.svg?branch=master)](https://coveralls.io/github/baidu/bfs?branch=master)
 
 The Baidu File System (BFS) is a distributed file system designed to support real-time applications. Like many other distributed file systems, BFS is highly fault-tolerant. But different from others, BFS provides low read/write latency while maintaining high throughput rates. Together with [Galaxy](https://github.com/baidu/galaxy) and [Tera](http://github.com/baidu/tera), BFS supports many real-time products in Baidu, including Baidu webpage database, Baidu incremental indexing system, Baidu user behavior analysis system, etc.
 
diff --git a/build.sh b/build.sh
index a75db86b..e63a5a6a 100755
--- a/build.sh
+++ b/build.sh
@@ -171,19 +171,21 @@ cd ${WORK_DIR}
 # config depengs.mk
 ########################################
 
-echo "PBRPC_PATH=./thirdparty" > depends.mk
-echo "PROTOBUF_PATH=./thirdparty" >> depends.mk
-echo "PROTOC_PATH=./thirdparty/bin/" >> depends.mk
+echo "WORK_PATH=${WORK_DIR}" > depends.mk
+echo "PBRPC_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "PROTOBUF_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "PROTOC_PATH=${WORK_DIR}/thirdparty/bin/" >> depends.mk
 echo 'PROTOC=$(PROTOC_PATH)protoc' >> depends.mk
-echo "PBRPC_PATH=./thirdparty" >> depends.mk
-echo "BOOST_PATH=./thirdparty/boost_1_57_0" >> depends.mk
-echo "GFLAG_PATH=./thirdparty" >> depends.mk
-echo "GTEST_PATH=./thirdparty" >> depends.mk
-echo "COMMON_PATH=./thirdparty" >> depends.mk
-echo "TCMALLOC_PATH=./thirdparty" >> depends.mk
+echo "PBRPC_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "GFLAG_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "GTEST_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "COMMON_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "TCMALLOC_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "SNAPPY_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "LEVELDB_PATH=${WORK_DIR}/thirdparty" >> depends.mk
 
 ########################################
-# build tera
+# build bfs
 ########################################
 
 make clean
diff --git a/internal_build.sh b/internal_build.sh
index 97db005e..25aecaec 100755
--- a/internal_build.sh
+++ b/internal_build.sh
@@ -174,15 +174,18 @@ cd ${WORK_DIR}
 # config depengs.mk
 ########################################
 
-echo "PBRPC_PATH=./thirdparty" > depends.mk
-echo "PROTOBUF_PATH=./thirdparty" >> depends.mk
-echo "PROTOC_PATH=./thirdparty/bin/" >> depends.mk
+echo "WORK_PATH=${WORK_DIR}" > depends.mk
+echo "PBRPC_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "PROTOBUF_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "PROTOC_PATH=${WORK_DIR}/thirdparty/bin/" >> depends.mk
 echo 'PROTOC=$(PROTOC_PATH)protoc' >> depends.mk
-echo "PBRPC_PATH=./thirdparty" >> depends.mk
-echo "GFLAG_PATH=./thirdparty" >> depends.mk
-echo "GTEST_PATH=./thirdparty" >> depends.mk
-echo "COMMON_PATH=./thirdparty" >> depends.mk
-echo "TCMALLOC_PATH=./thirdparty" >> depends.mk
+echo "PBRPC_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "GFLAG_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "GTEST_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "COMMON_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "TCMALLOC_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "SNAPPY_PATH=${WORK_DIR}/thirdparty" >> depends.mk
+echo "LEVELDB_PATH=${WORK_DIR}/thirdparty" >> depends.mk
 
 ########################################
 # build bfs