Hi,all, I find that in pvfs_file_create function, ll_pvfs_lookup is called after ll_pvfs_create. And pvfs_mkdir do the same after ll_pvfs_mkdir. It results in once more communication between client node and mgr node. I think it isn't neccessory. Why not do all the tasks in ll_pvfs_create? Thus we can improve throughput of pvfs. Best regards Song Dongmei