9 files changed, 21 insertions, 12 deletions
diff --git a/go/operation/assign_file_id.go b/go/operation/assign_file_id.go
index 4e72ad939..672bfa99c 100644
--- a/go/operation/assign_file_id.go
+++ b/go/operation/assign_file_id.go
@@ -1,12 +1,13 @@
 package operation
 
 import (
-	"github.com/chrislusf/weed-fs/go/glog"
-	"github.com/chrislusf/weed-fs/go/util"
 	"encoding/json"
 	"errors"
 	"net/url"
 	"strconv"
+
+	"github.com/chrislusf/weed-fs/go/glog"
+	"github.com/chrislusf/weed-fs/go/util"
 )
 
 type AssignResult struct {
diff --git a/go/operation/data_struts.go b/go/operation/data_struts.go
index 09fab05d1..4980f9913 100644
--- a/go/operation/data_struts.go
+++ b/go/operation/data_struts.go
@@ -1,7 +1,5 @@
 package operation
 
-import ()
-
 type JoinResult struct {
 	VolumeSizeLimit uint64 `json:"VolumeSizeLimit,omitempty"`
 	Error           string `json:"error,omitempty"`
diff --git a/go/operation/delete_content.go b/go/operation/delete_content.go
index 84391b634..416a852b3 100644
--- a/go/operation/delete_content.go
+++ b/go/operation/delete_content.go
@@ -1,12 +1,13 @@
 package operation
 
 import (
-	"github.com/chrislusf/weed-fs/go/util"
 	"encoding/json"
 	"errors"
 	"net/url"
 	"strings"
 	"sync"
+
+	"github.com/chrislusf/weed-fs/go/util"
 )
 
 type DeleteResult struct {
diff --git a/go/operation/list_masters.go b/go/operation/list_masters.go
index 7d46a9ebc..7ada94243 100644
--- a/go/operation/list_masters.go
+++ b/go/operation/list_masters.go
@@ -1,9 +1,10 @@
 package operation
 
 import (
+	"encoding/json"
+
 	"github.com/chrislusf/weed-fs/go/glog"
 	"github.com/chrislusf/weed-fs/go/util"
-	"encoding/json"
 )
 
 type ClusterStatusResult struct {
diff --git a/go/operation/lookup.go b/go/operation/lookup.go
index ebf153d27..70bc7146e 100644
--- a/go/operation/lookup.go
+++ b/go/operation/lookup.go
@@ -1,14 +1,15 @@
 package operation
 
 import (
-	"github.com/chrislusf/weed-fs/go/util"
 	"encoding/json"
 	"errors"
-	_ "fmt"
+	"fmt"
 	"math/rand"
 	"net/url"
 	"strings"
 	"time"
+
+	"github.com/chrislusf/weed-fs/go/util"
 )
 
 type Location struct {
@@ -21,6 +22,10 @@ type LookupResult struct {
 	Error     string     `json:"error,omitempty"`
 }
 
+func (lr *LookupResult) String() string {
+	return fmt.Sprintf("VolumeId:%s, Locations:%v, Error:%s", lr.VolumeId, lr.Locations, lr.Error)
+}
+
 var (
 	vc VidCache
 )
diff --git a/go/operation/submit.go b/go/operation/submit.go
index 3e09c2edf..62db46617 100644
--- a/go/operation/submit.go
+++ b/go/operation/submit.go
@@ -2,13 +2,14 @@ package operation
 
 import (
 	"bytes"
-	"github.com/chrislusf/weed-fs/go/glog"
 	"io"
 	"mime"
 	"os"
 	"path"
 	"strconv"
 	"strings"
+
+	"github.com/chrislusf/weed-fs/go/glog"
 )
 
 type FilePart struct {
diff --git a/go/operation/system_message.pb.go b/go/operation/system_message.pb.go
index 9f00dd74d..6f0f974c5 100644
--- a/go/operation/system_message.pb.go
+++ b/go/operation/system_message.pb.go
@@ -14,7 +14,7 @@ It has these top-level messages:
 */
 package operation
 
-import proto "code.google.com/p/goprotobuf/proto"
+import "github.com/golang/protobuf/proto"
 import math "math"
 
 // Reference imports to suppress errors if they are not otherwise used.
diff --git a/go/operation/system_message_test.go b/go/operation/system_message_test.go
index 2731d0b2f..d18ca49a4 100644
--- a/go/operation/system_message_test.go
+++ b/go/operation/system_message_test.go
@@ -1,10 +1,11 @@
 package operation
 
 import (
-	proto "code.google.com/p/goprotobuf/proto"
 	"encoding/json"
 	"log"
 	"testing"
+
+	"github.com/golang/protobuf/proto"
 )
 
 func TestSerialDeserial(t *testing.T) {
diff --git a/go/operation/upload_content.go b/go/operation/upload_content.go
index 38737702d..480d76dca 100644
--- a/go/operation/upload_content.go
+++ b/go/operation/upload_content.go
@@ -2,7 +2,6 @@ package operation
 
 import (
 	"bytes"
-	"github.com/chrislusf/weed-fs/go/glog"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -14,6 +13,8 @@ import (
 	"net/textproto"
 	"path/filepath"
 	"strings"
+
+	"github.com/chrislusf/weed-fs/go/glog"
 )
 
 type UploadResult struct {