公开(公告)号：US20230393977A1

公开(公告)日：2023-12-07

申请号：US18121389

申请日：2023-03-14

Applicant: NetApp, Inc.

Inventor： Abhijeet GOLE ,  Rohit SINGH

IPC: G06F12/02 ,  G06F11/10

CPC classification number: G06F12/0292 ,  G06F12/0246 ,  G06F11/1004 ,  G06F2212/7201

Abstract: Methods, non-transitory machine readable media, and computing devices that manage storage operations directed to dual-port solid state disks (SSDs) coupled to multiple hosts are disclosed. With this technology, context metadata comprising a checksum is retrieved based on a first physical address mapped, in a cached zoned namespace (ZNS) mapping table, to a logical address. The logical address is extracted from a request to read a portion of a file. A determination is made when the checksum is valid based on a comparison to identification information extracted from the request and associated with the file portion. At least the first physical address is replaced in the cached ZNS mapping table with a second physical address retrieved from an on-disk ZNS mapping table, when the determination indicates the checksum is invalid. The file portion retrieved from a dual-port SSD using the second physical address is returned to service the request.

公开(公告)号：US20220300419A1

公开(公告)日：2022-09-22

申请号：US17831529

申请日：2022-06-03

Applicant: NetApp, Inc.

Inventor： Abhijeet GOLE ,  Rohit SINGH

IPC: G06F12/02 ,  G06F12/0811 ,  G06F12/0868 ,  G06F12/0873

Abstract: Methods, non-transitory machine readable media, and computing devices that manage storage operations directed to dual-port solid state disks (SSDs) coupled to multiple hosts are disclosed. With this technology, context metadata comprising a checksum is retrieved based on a first physical address mapped, in a cached zoned namespace (ZNS) mapping table, to a logical address. The logical address is extracted from a request to read a portion of a file. A determination is made when the checksum is valid based on a comparison to identification information extracted from the request and associated with the file portion. At least the first physical address is replaced in the cached ZNS mapping table with a second physical address retrieved from an on-disk ZNS mapping table, when the determination indicates the checksum is invalid. The file portion retrieved from a dual-port SSD using the second physical address is returned to service the request.

公开(公告)号：US20250086109A1

公开(公告)日：2025-03-13

申请号：US18790854

申请日：2024-07-31

Applicant: NetApp, Inc.

Inventor： Abhijeet GOLE ,  Rohit SINGH

IPC: G06F12/02 ,  G06F11/10 ,  G06F12/0811 ,  G06F12/0868 ,  G06F12/0873

Abstract: Methods, non-transitory machine readable media, and computing devices that manage storage operations directed to dual-port solid state disks (SSDs) coupled to multiple hosts are disclosed. With this technology, context metadata comprising a checksum is retrieved based on a first physical address mapped, in a cached zoned namespace (ZNS) mapping table, to a logical address. The logical address is extracted from a request to read a portion of a file. A determination is made when the checksum is valid based on a comparison to identification information extracted from the request and associated with the file portion. At least the first physical address is replaced in the cached ZNS mapping table with a second physical address retrieved from an on-disk ZNS mapping table, when the determination indicates the checksum is invalid. The file portion retrieved from a dual-port SSD using the second physical address is returned to service the request.