公开(公告)号：US20240256443A1

公开(公告)日：2024-08-01

申请号：US18633248

申请日：2024-04-11

Applicant: Lemon Inc.

Inventor： Prathamesh Amritkar ,  Peng Xu ,  Jinhyuk Kim ,  Kyoungryun Bae

IPC: G06F12/02

CPC classification number: G06F12/0253

Abstract: Described are examples for performing garbage collection in a file system having multiple zones of data. A garbage rate associated with an amount of invalid data in the zone can be computed for each zone of the multiple zones in the file system. One or more candidate zones, of the multiple zones, can be determined for garbage collection based on the garbage rate and a sequence number assigned to the zone. Garbage collection of the one or more candidate zones in the file system can be performed.

公开(公告)号：US20230401124A1

公开(公告)日：2023-12-14

申请号：US18449213

申请日：2023-08-14

Applicant: Lemon Inc. ,  Beijing Volcano Engine Technology Co., Ltd.

Inventor： Peng Xu ,  Fei Liu ,  Kyoungryun Bae ,  Jinhyuk Kim ,  Hyungjin Im ,  Kyung Ho Kim ,  Prathamesh Amritkar ,  Chaohong Hu ,  Ken Hu

IPC: G06F11/10 ,  G06F11/07 ,  G06F11/30

CPC classification number: G06F11/1068 ,  G06F11/0793 ,  G06F11/076 ,  G06F11/3058

Abstract: Media scans to test the integrity of data stored in non-volatile storage are weighted to improve the efficiency of the scans and preserve operating bandwidth of the corresponding device.

公开(公告)号：US20240248793A1

公开(公告)日：2024-07-25

申请号：US18582490

申请日：2024-02-20

Applicant: Lemon Inc.

Inventor： Peng Xu ,  Fei Liu ,  Kyoungryun Bae ,  Jinhyuk Kim ,  Prathamesh Amritkar ,  Dengcheng Zhu ,  Wei Tang ,  Sheng Qiu

IPC: G06F11/10

CPC classification number: G06F11/1004 ,  G06F11/1016 ,  G06F11/1068

Abstract: A computing system for verifying data integrity is provided, including a host device comprising a memory controller, and a storage device. The memory controller receives original data blocks, each having an associated initial CRC value. The memory controller then segments and recombines the data blocks into logic blocks. The storage device is configured to write the logic blocks to its non-volatile memory of the storage device in the write operation, calculate a new logic block (LB) CRC value for each logic block, and calculate a combined LB CRC value. After the write operation, the memory controller combines duplicated copies of a given CRC value for each of the original data blocks, then combines them together to calculate a combined segments CRC value, and compares the combined segments CRC value to the combined LB CRC value. When the combined CRC values match, a verification response is generated verifying data integrity.

公开(公告)号：US20230229358A1

公开(公告)日：2023-07-20

申请号：US18189153

申请日：2023-03-23

Applicant: Lemon Inc.

Inventor： Peng Xu ,  Fei Liu ,  Kyoungryun Bae ,  Hyungjin Im ,  Jinhyuk Kim ,  Kyung Ho Kim ,  Prathamesh Amritkar ,  Chaohong Hu

IPC: G06F3/06

CPC classification number: G06F3/0659 ,  G06F3/0673 ,  G06F3/0604

Abstract: A zoned namespace (ZNS) storage computing device includes a processor, and non-volatile memory comprising a plurality of zones including a given zone. The processor is configured to execute a zone writing program to receive zone write commands, and responsive to receiving the zone write commands, execute the zone write commands on the given zone of the non-volatile memory of the storage computing device in an order specified by zone write sequence numbers included in a zone descriptor for the given zone.