公开(公告)号：US10402313B2

公开(公告)日：2019-09-03

申请号：US13863034

申请日：2013-04-15

Applicant: SanDisk Technologies LLC

Inventor： Junzhi Wang ,  Alon Marcu ,  Ori Stern ,  Susan A. Cannon ,  Xian Jun Liu ,  Chieh-Hao Yang ,  Po Yuan

IPC: G06F12/02 ,  G06F16/13 ,  G06F3/06 ,  G06F16/18 ,  G06F15/16

Abstract: In order to write data to a storage system accessible with a first and second file system, a manager receives a data write request associated with a file. The manager determines if a function supported by the second file system is needed to complete the write request. If so, the file is opened and extended with the first file system. The file is then opened and written to by the second file system. The file is truncated by the first file system, and closed by both file systems. If the second file system function is not needed, the file is opened, written, and closed by the first file system. In order to read data from a storage system using a function supported by the second file system, the second file system's cached storage system index is updated, and then the file is opened, read, and closed by the second file system.