cached file blocks are used only if the corresponding cached attributes are up to date 只要相應(yīng)緩沖的屬性是最新的,緩沖文件塊被使用。
sparse files allow data to be written to random locations within a file without instantiating previously unwritten intervening file blocks 稀疏文件允許把數(shù)據(jù)寫(xiě)到一個(gè)文件的任意位置,而不要將以前未寫(xiě)的中間文件塊實(shí)例化。