diff --git a/fuse_lowlevel/bfs_ll_mount.cc b/fuse_lowlevel/bfs_ll_mount.cc
index 6011749d..d4d3ae55 100644
--- a/fuse_lowlevel/bfs_ll_mount.cc
+++ b/fuse_lowlevel/bfs_ll_mount.cc
@@ -144,13 +144,13 @@ static void bfs_ll_lookup(fuse_req_t req, fuse_ino_t parent, const char *name) {
 
 struct dirbuf {
     char *p;
-    uint32_t size_used;
+    int32_t size_used;
 };
 
 static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name,
                         fuse_ino_t ino) {
     struct stat st;
-    size_t oldsize = b->size_used;
+    int32_t oldsize = b->size_used;
     b->size_used += fuse_add_direntry(req, NULL, 0, name, NULL, 0);
     b->p = (char *) realloc(b->p, b->size_used);
     memset(&st, 0, sizeof(st));
@@ -159,9 +159,9 @@ static void dirbuf_add(fuse_req_t req, struct dirbuf *b, const char *name,
                         b->size_used);
 }
  
-static int reply_buf_limited(fuse_req_t req, const char *buf, size_t bufsize,
-                  off_t off, size_t maxsize) {
-    if (bufsize - off > 0)
+static int reply_buf_limited(fuse_req_t req, const char *buf, int32_t bufsize,
+                  off_t off, int32_t maxsize) {
+    if (bufsize > off)
         return fuse_reply_buf(req, buf + off, min(bufsize - off, maxsize));
     else
         return fuse_reply_buf(req, NULL, 0);
diff --git a/src/nameserver/namespace.cc b/src/nameserver/namespace.cc
index cdbff813..63b7779a 100644
--- a/src/nameserver/namespace.cc
+++ b/src/nameserver/namespace.cc
@@ -243,14 +243,13 @@ bool NameSpace::IGet(int64_t entry_id, FileInfo * info) {
 
 //unfinshed, consistency not guranteed, to be continue
 bool NameSpace::DeleteFileInfo(const std::string file_key, NameServerLog* log) {
-    int64_t entry_id;
     std::string file_key_i;
     FileInfo info;
     if (!GetFromStore(file_key, &info)) {
         LOG(INFO, "DeleteFileInfo GetFromStore for entry_id return false");
         return false;
     }
-    entry_id = info.entry_id();
+    int64_t entry_id = info.entry_id();
     LOG(DEBUG, "DeleteFileInfo get entry_id from db_ E%ld return true", entry_id);
     leveldb::Status s = db_->Delete(leveldb::WriteOptions(), file_key);
     if (!s.ok()) {
@@ -315,8 +314,6 @@ StatusCode NameSpace::BuildPath(const std::string& path, FileInfo* file_info, st
         LOG(INFO, "path split fail %s", path.c_str());
         return kBadParameter;
     }
-        LOG(INFO, "path split %s", path.c_str());
-        LOG(INFO, "path[0] %s", paths[0].c_str());
 
     /// Find parent directory, create if not exist.
     int64_t parent_id = kRootEntryid;
@@ -770,14 +767,12 @@ StatusCode NameSpace::InternalDeleteDirectory(const FileInfo& dir_info,
 
     leveldb::Status s = db_->Write(leveldb::WriteOptions(), &batch);
     if (!s.ok()) {
-        LOG(INFO, "Unlink dentry fail: %s\n", dir_info.name().c_str());
-        LOG(FATAL, "Namespace write to db_ fail!");
+        LOG(FATAL, "Unlink dentry write to db_ fail: %s\n", dir_info.name().c_str());
         return kUpdateError;
     }
     s = db_i->Write(leveldb::WriteOptions(), &batch);
     if (!s.ok()) {
-        LOG(INFO, "Unlink dentry fail: %s\n", dir_info.name().c_str());
-        LOG(FATAL, "Namespace write to db_i fail!");
+        LOG(FATAL, "Unlink dentry write to db_i fail: %s\n", dir_info.name().c_str());
         return kUpdateError;
     }
     LOG(INFO, "Delete directory done: %s[%s]",
diff --git a/src/sdk/bfs.h b/src/sdk/bfs.h
index fc3c6a54..e1f9fed6 100644
--- a/src/sdk/bfs.h
+++ b/src/sdk/bfs.h
@@ -78,7 +78,7 @@ class File {
 };
 
 struct BfsFileInfo {
-    uint64_t ino;
+    int64_t ino;
     int64_t size;
     uint32_t ctime;
     uint32_t mode;