公开(公告)号：EP4435580A1

公开(公告)日：2024-09-25

申请号：EP24164405.3

申请日：2024-03-19

申请人： Lemon Inc.

发明人： ZHOU, Ping ,  FAN, Kan Frankie ,  HU, Chaohong ,  LI, Longxiao ,  ZHANG, Hui ,  LIU, Fei

IPC分类号： G06F3/06

CPC分类号： G06F3/0683 ,  G06F3/0659 ,  G06F3/064 ,  G06F3/0608 ,  G06F3/0631

摘要： Systems and methods for space allocation for block device compression are provided. In particular, a computing device may receive (204) an allocation request to write the compressed data, select (210) a range list adequate for serving the allocation request from a plurality of range list, dequeue (214) a range entry from the selected range list to allocate free space for the compressed data, and allocate (216) the free space corresponding to the range entry to the compressed data to serve the allocation request.

公开(公告)号：EP4372540A1

公开(公告)日：2024-05-22

申请号：EP23208357.6

申请日：2023-11-07

申请人： Lemon Inc.

发明人： XU, Peng ,  QIU, Sheng ,  HU, Chaohong ,  BAE, Kyoungryun

IPC分类号： G06F3/06 ,  G06F12/02 ,  G06F12/0866 ,  G06F12/0868

CPC分类号： G06F3/0619 ,  G06F3/064 ,  G06F3/0679 ,  G06F3/0644 ,  G06F2212/720820130101 ,  G06F2212/720120130101 ,  G06F2212/26220130101 ,  G06F2212/21420130101 ,  G06F12/0246 ,  G06F12/0866 ,  G06F2212/31220130101 ,  G06F12/0868

摘要： Described are examples for storing, in a first zone cache (110), one or more logical blocks (LBs) corresponding to a data chunk, writing, for each LB in the data chunk, a cache element of a cache entry (210) that points to the LB in the first zone cache (110), where the cache entry (210) includes multiple cache elements corresponding to the multiple LBs of the data chunk, writing, for the cache entry (210), a table entry in a mapping table (108) that points to the cache entry (210), and when a storage policy is triggered for the cache entry, writing the multiple LBs, pointed to by each cache element of the cache entry (210), as contiguous LBs in an isolation block for the data chunk in a second zone stream (114), and updating the table entry to point to the isolation block in the second zone stream (114).

公开(公告)号：EP4372539A1

公开(公告)日：2024-05-22

申请号：EP23208304.8

申请日：2023-11-07

申请人： Lemon Inc.

发明人： ZHOU, Ping ,  LI, Longxiao ,  HU, Chaohong ,  LIU, Fei ,  FAN, Kan Frankie ,  ZHANG, Hui

IPC分类号： G06F3/06 ,  G06F12/02

CPC分类号： G06F3/061 ,  G06F3/0608 ,  G06F3/0689 ,  G06F3/067 ,  G06F3/064 ,  G06F3/0661 ,  G06F12/02

摘要： A flat hash table includes a plurality of entries, and each entry includes a hash function index and a usage bitmap. A method for block device level compression mapping using the flat hash table includes compressing uncompressed data to compressed data, retrieving an entry of the flat hash table using an uncompressed block address of the uncompressed data, determining a compressed block address of the compressed data by executing at least one hash function and by determining a hash function in the at least one hash function for mapping the uncompressed block address to the compressed block address that corresponds to a space in a block storage device, storing the compressed data to the space that corresponds to the compressed block address, and updating the hash function index of the entry of the flat hash table with an index indicative of the hash function.

公开(公告)号：EP4386566A1

公开(公告)日：2024-06-19

申请号：EP23215492.2

申请日：2023-12-11

申请人： Lemon Inc.

发明人： ZHOU, Ping ,  FAN, Kan Frankie ,  HU, Chaohong ,  LI, Longxiao ,  XU, Peng ,  LIU, Fei ,  ZHANG, Hui

IPC分类号： G06F12/02 ,  G06F3/06

CPC分类号： G06F3/061 ,  G06F3/0679 ,  G06F3/064 ,  G06F3/0631 ,  G06F3/0614 ,  G06F12/023 ,  G06F2212/720220130101 ,  G06F12/0238

摘要： A system and method are described to efficiently allocate memory space with low latency overhead by allocating blocks of non-volatile memory on a storage device according to a tree data structure comprising a plurality of counter sets, each counter set including one or a plurality of counters indicating numbers of unallocated blocks of memory space within the non-volatile memory.

公开(公告)号：EP4435581A1

公开(公告)日：2024-09-25

申请号：EP24165284.1

申请日：2024-03-21

申请人： Lemon Inc.

发明人： XU, Peng ,  LIU, Fei ,  BAE, Kyoungryun ,  IM, Hyungjin ,  KIM, Jinhyuk ,  KIM, Kyung Ho ,  AMRITKAR, Prathamesh ,  HU, Chaohong

IPC分类号： G06F3/06

CPC分类号： G06F3/0679 ,  G06F3/061 ,  G06F3/0644 ,  G06F3/0659

摘要： 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.

公开(公告)号：EP4411530A1

公开(公告)日：2024-08-07

申请号：EP24154012.9

申请日：2024-01-25

申请人： Lemon Inc.

发明人： ZHOU, Ping ,  LI, Longxiao ,  XU, Peng ,  FAN, Kan Frankie ,  HU, Chaohong ,  LIU, Fei ,  ZHANG, Hui ,  XU, Di

IPC分类号： G06F3/06 ,  G06F12/02 ,  G06F12/04 ,  G06F12/14

CPC分类号： G06F3/061 ,  G06F3/064 ,  G06F3/0659 ,  G06F3/067 ,  G06F3/0608 ,  G06F3/0634 ,  G06F2212/101620130101 ,  G06F12/0292 ,  G06F12/1408 ,  G06F12/04 ,  G06F12/0284 ,  G06F2212/720120130101 ,  G06F2212/26120130101 ,  G06F2212/26320130101

摘要： A method for adaptive mapping for data compression includes determining (1030) an input/output (I/O) request pattern, dynamically switching (1040) between a segment mapping mode and a flat hash table mapping mode based on the determined I/O request pattern, updating (470) a shared mapping table for the segment mapping mode and the flat hash table mapping mode, and adjusting an entry of the mapping table (710) based on the determined I/O request pattern and a status of the entry.

公开(公告)号：EP4404042A1

公开(公告)日：2024-07-24

申请号：EP23211762.2

申请日：2023-11-23

申请人： Lemon Inc.

发明人： ZHOU, Ping ,  HU, Chaohong ,  FAN, Kan Frankie ,  LIU, Fei ,  LI, Longxiao ,  ZHANG, Hui

IPC分类号： G06F3/06 ,  G06F12/02

CPC分类号： G06F3/0608 ,  G06F3/0631 ,  G06F3/064 ,  G06F3/0661 ,  G06F3/067 ,  G06F3/0689

摘要： Systems and methods for accessing block storage devices are provided. In particular, a computing device may receive (204) a write request including an uncompressed data and an uncompressed block address associated with the uncompressed data, generate (206) compressed data by compressing the uncompressed data, determine (208) a plurality of mapping candidates of compressed data blocks in the block storage devices based on the uncompressed block address, select a compressed data block from the plurality of mapping candidates that has sufficient capacity to store the compressed data, write the compressed data to the selected compressed data block, update metadata of the selected compressed data block to link the uncompressed block address to a compressed block address of the selected compressed data block, and write the selected compressed data block back to a respective block storage device of the block storage devices.

公开(公告)号：EP4369206A1

公开(公告)日：2024-05-15

申请号：EP23208640.5

申请日：2023-11-08

申请人： Lemon Inc.

发明人： XU, Peng ,  ZHOU, Ping ,  HU, Chaohong ,  LIU, Fei ,  XU, Changyou ,  FAN, Kan Frankie

IPC分类号： G06F12/02 ,  G06F12/0866

CPC分类号： G06F12/0246 ,  G06F2212/720120130101 ,  G06F2212/720320130101 ,  G06F2212/720720130101 ,  G06F12/0866

摘要： Described are examples for storing data on a storage device, including storing (702), in a live write stream cache, one or more logical blocks, LBs, corresponding to a data segment, writing (704), for each LB in the data segment, a cache element of a cache entry that points to the LB in the live write stream cache, where the cache entry includes multiple cache elements corresponding to the multiple LBs of the data segment, writing (706), for the cache entry, a table entry in a mapping table that points to the cache entry, and when a storage policy is triggered for the cache entry, writing (710) the multiple LBs, pointed to by each cache element of the cache entry, to a stream for storing as contiguous LBs on the storage device, and updating (712) the table entry to point to a physical address of a first LB of the contiguous LBs on the storage device.