公开(公告)号：US20190196735A1

公开(公告)日：2019-06-27

申请号：US16287880

申请日：2019-02-27

Applicant: NETAPP, INC.

Inventor： Amit Golander ,  Yigal Korman ,  Boaz Harrosh

IPC: G06F3/06 ,  G06F12/02 ,  G06F12/14 ,  G06F12/06 ,  G06F12/1009

CPC classification number: G06F3/0641 ,  G06F3/0608 ,  G06F3/0619 ,  G06F3/065 ,  G06F3/068 ,  G06F12/0292 ,  G06F12/063 ,  G06F12/0866 ,  G06F12/1009 ,  G06F12/1475 ,  G06F2212/1032 ,  G06F2212/1052

Abstract: Method, system and product for direct access to de-duplicated data units in memory-based file systems. The method comprising: updating a page entry in a page table of a process to include a direct access pointer to a de-duplicated data unit retained by the memory-based file system, wherein the page entry is set to be write protected; detecting a page fault occurring due to the process performing a store instruction to the de-duplicated data unit; and in response to said detecting: allocating a new data unit; copying content of the de-duplicated data unit to the new data unit; and replacing the direct access pointer to the de-duplicated data unit with a direct access pointer to the new data unit.

公开(公告)号：US20180322152A1

公开(公告)日：2018-11-08

申请号：US16040358

申请日：2018-07-19

Applicant: NETAPP, INC.

Inventor： Amit Golander

IPC: G06F17/30 ,  H04L29/08 ,  H04L12/911

CPC classification number: G06F16/22 ,  G06F16/182 ,  G06F16/185 ,  G06F16/2455 ,  H04L47/70 ,  H04L67/104 ,  H04L67/1097

Abstract: A method of negotiating memory record ownership between network nodes, comprising: storing in a memory of a first network node a subset of a plurality of memory records and one of a plurality of file system segments of a file system mapping the memory records; receiving a request from a second network node to access a memory record of the memory records subset; identifying the memory record by using the file system segment; deciding, by a placement algorithm, whether to relocate the memory record, from the memory records subset to a second subset of the plurality of memory records stored in a memory of the second network node; when a relocation is not decided, providing remote access of the memory record via a network to the second network node; and when a relocation is decided, relocating the memory record via the network for management by the second network node.