公开(公告)号：US10021218B2

公开(公告)日：2018-07-10

申请号：US15073006

申请日：2016-03-17

Applicant: NetApp, Inc.

Inventor： Deepak Raghu Kenchammana-Hosekote ,  Michael R. Eisler ,  Arthur F. Lent ,  Rahul Iyer ,  Shravan Gaonkar

IPC: H04L12/24 ,  H04L29/06 ,  G06F3/06 ,  G06F12/0866 ,  G06F12/10 ,  H04L29/08 ,  G06F12/02

CPC classification number: H04L67/42 ,  G06F3/06 ,  G06F12/0284 ,  G06F12/0866 ,  G06F12/10 ,  G06F2212/656 ,  H04L67/1097

Abstract: I/O bandwidth reduction using storage-level common page information is implemented by a storage server, in response to receiving a request from a client for a page stored at a first virtual address, determining that the first virtual address maps to a page that is a duplicate of a page stored at a second virtual address or that the first and second virtual addresses map to a deduplicated page within a storage system, and transmitting metadata to the client mapping the first virtual address to a second virtual address that also maps to the deduplicated page. For one embodiment, the metadata is transmitted in anticipation of a request for the redundant/deduplicated page via the second virtual address. For an alternate embodiment, the metadata is sent in response to a determination that a page that maps to the second virtual address was previously sent to the client.

公开(公告)号：US10523786B2

公开(公告)日：2019-12-31

申请号：US16016455

申请日：2018-06-22

Applicant: NetApp Inc.

Inventor： Deepak Raghu Kenchammana-Hosekote ,  Michael R. Eisler ,  Arthur F. Lent ,  Rahul Iyer ,  Shravan Gaonkar

IPC: H04L29/06 ,  G06F3/06 ,  G06F12/0866 ,  G06F12/10 ,  H04L29/08 ,  G06F12/02

Abstract: I/O bandwidth reduction using storage-level common page information is implemented by a storage server, in response to receiving a request from a client for a page stored at a first virtual address, determining that the first virtual address maps to a page that is a duplicate of a page stored at a second virtual address or that the first and second virtual addresses map to a deduplicated page within a storage system, and transmitting metadata to the client mapping the first virtual address to a second virtual address that also maps to the deduplicated page. For one embodiment, the metadata is transmitted in anticipation of a request for the redundant/deduplicated page via the second virtual address. For an alternate embodiment, the metadata is sent in response to a determination that a page that maps to the second virtual address was previously sent to the client.