diff --git a/weed/filer/filer_conf.go b/weed/filer/filer_conf.go
index 0a86192ec..b75fb5084 100644
--- a/weed/filer/filer_conf.go
+++ b/weed/filer/filer_conf.go
@@ -10,9 +10,8 @@ import (
 	"github.com/viant/ptrie"
 )
 
-
 const (
-	DirectoryEtc = "/etc"
+	DirectoryEtc  = "/etc"
 	FilerConfName = "filer.conf"
 )
 
@@ -27,7 +26,7 @@ func NewFilerConf() (fc *FilerConf) {
 	return fc
 }
 
-func (fc *FilerConf) loadFromFiler(filer *Filer) (err error){
+func (fc *FilerConf) loadFromFiler(filer *Filer) (err error) {
 	filerConfPath := util.NewFullPath(DirectoryEtc, FilerConfName)
 	entry, err := filer.FindEntry(context.Background(), filerConfPath)
 	if err != nil {
@@ -79,7 +78,7 @@ var (
 	EmptyFilerConfPathConf = &filer_pb.FilerConf_PathConf{}
 )
 
-func (fc *FilerConf) MatchStorageRule(path string) (pathConf *filer_pb.FilerConf_PathConf){
+func (fc *FilerConf) MatchStorageRule(path string) (pathConf *filer_pb.FilerConf_PathConf) {
 	fc.rules.MatchPrefix([]byte(path), func(key []byte, value interface{}) bool {
 		pathConf = value.(*filer_pb.FilerConf_PathConf)
 		return true
diff --git a/weed/filesys/file.go b/weed/filesys/file.go
index 9e1342370..3bffa156e 100644
--- a/weed/filesys/file.go
+++ b/weed/filesys/file.go
@@ -294,7 +294,7 @@ func (file *File) addChunks(chunks []*filer_pb.FileChunk) {
 	// find the earliest incoming chunk
 	newChunks := chunks
 	earliestChunk := newChunks[0]
-	for i:=1;i<len(newChunks);i++{
+	for i := 1; i < len(newChunks); i++ {
 		if lessThan(earliestChunk, newChunks[i]) {
 			earliestChunk = newChunks[i]
 		}
diff --git a/weed/operation/assign_file_id.go b/weed/operation/assign_file_id.go
index c58d3a84d..16ad04476 100644
--- a/weed/operation/assign_file_id.go
+++ b/weed/operation/assign_file_id.go
@@ -137,4 +137,3 @@ func (so *StorageOption) ToAssignRequests(count int) (ar *VolumeAssignRequest, a
 	}
 	return
 }
-
diff --git a/weed/pb/filer_pb/filer_pb_helper.go b/weed/pb/filer_pb/filer_pb_helper.go
index fb989a02e..8dde9c80c 100644
--- a/weed/pb/filer_pb/filer_pb_helper.go
+++ b/weed/pb/filer_pb/filer_pb_helper.go
@@ -141,6 +141,7 @@ func IsRename(event *SubscribeMetadataResponse) bool {
 }
 
 var _ = ptrie.KeyProvider(&FilerConf_PathConf{})
+
 func (fp *FilerConf_PathConf) Key() interface{} {
 	return fp.LocationPrefix
 }
diff --git a/weed/s3api/http/header.go b/weed/s3api/http/header.go
index f496429fc..a960d2370 100644
--- a/weed/s3api/http/header.go
+++ b/weed/s3api/http/header.go
@@ -32,5 +32,5 @@ const (
 // Non-Standard S3 HTTP request constants
 const (
 	AmzIdentityId = "x-amz-identity-id"
-	AmzIsAdmin = "x-amz-is-admin"  // only set to http request header as a context
+	AmzIsAdmin    = "x-amz-is-admin" // only set to http request header as a context
 )
diff --git a/weed/server/filer_server_handlers.go b/weed/server/filer_server_handlers.go
index a64b23927..451e2a2de 100644
--- a/weed/server/filer_server_handlers.go
+++ b/weed/server/filer_server_handlers.go
@@ -27,7 +27,7 @@ func (fs *FilerServer) filerHandler(w http.ResponseWriter, r *http.Request) {
 	case "DELETE":
 		stats.FilerRequestCounter.WithLabelValues("delete").Inc()
 		if _, ok := r.URL.Query()["tagging"]; ok {
-			fs.DeleteTaggingHandler(w,r)
+			fs.DeleteTaggingHandler(w, r)
 		} else {
 			fs.DeleteHandler(w, r)
 		}
@@ -35,7 +35,7 @@ func (fs *FilerServer) filerHandler(w http.ResponseWriter, r *http.Request) {
 	case "PUT":
 		stats.FilerRequestCounter.WithLabelValues("put").Inc()
 		if _, ok := r.URL.Query()["tagging"]; ok {
-			fs.PutTaggingHandler(w,r)
+			fs.PutTaggingHandler(w, r)
 		} else {
 			fs.PostHandler(w, r)
 		}
diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index 0344d84dc..5806b0c1f 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -103,7 +103,7 @@ func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusNoContent)
 }
 
-func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication string, ttlSeconds int32, dataCenter, rack string) (*operation.StorageOption) {
+func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication string, ttlSeconds int32, dataCenter, rack string) *operation.StorageOption {
 	collection := util.Nvl(qCollection, fs.option.Collection)
 	replication := util.Nvl(qReplication, fs.option.DefaultReplication)
 
@@ -131,7 +131,7 @@ func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication
 		if err != nil {
 			glog.Errorf("fail to parse %s ttl setting %s: %v", rule.LocationPrefix, rule.Ttl, err)
 		}
-		ttlSeconds = int32(ttl.Minutes())*60
+		ttlSeconds = int32(ttl.Minutes()) * 60
 	}
 
 	return &operation.StorageOption{
@@ -144,7 +144,7 @@ func (fs *FilerServer) detectStorageOption(requestURI, qCollection, qReplication
 	}
 }
 
-func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, dataCenter, rack string) (*operation.StorageOption) {
+func (fs *FilerServer) detectStorageOption0(requestURI, qCollection, qReplication string, qTtl string, dataCenter, rack string) *operation.StorageOption {
 
 	ttl, err := needle.ReadTTL(qTtl)
 	if err != nil {