公开(公告)号：US20180309852A1

公开(公告)日：2018-10-25

申请号：US16016455

申请日：2018-06-22

Applicant: NetApp Inc.

Inventor： Deepak Raghu KENCHAMMANA-HOSEKOTE ,  Michael R. EISLER ,  Arthur F. LENT ,  Rohul IYER ,  Shravan GAONKAR

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

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.