Shenzhen Unionmemory Information System Limited

Weiliang Wang

Jintao Gan

Zongming Jia

Jian Tong Li

Xuesen Yang

Zhiyuan Leng

Longhua Qin

Rongjuan Shen

Jian Zuo

Yifan Zou

Daojing Han

Yuanyuan Feng

A method for upgrading a SSD firmware compatible with an RAID and a non-RAID including: packing two firmware versions including an RAID firmware and a non-RAID firmware together, when the two firmware versions need to be released; adding a configuration information with a fixed length of bytes to a firmware header of a resulting packed firmware, in which the configuration information includes: index values, offsets, and file sizes of the RAID firmware and the non-RAID firmware; determining, according to an internal information of an SSD, whether a matching firmware version thereof is the RAID firmware or the non-RAID firmware; and comparing the internal information of the SSD with the configuration information of the firmware header, selecting a matching index value, and reading a corresponding firmware according to the offset and the file size.

Method and apparatus for upgrading SSD firmware compatible with raid SSD and non-raid

A method and an apparatus of mapping table reconstruction based on a SSD, and a computer device are disclosed by the present application, and the method includes: acquiring the mapping table reconstruction request based on the SSD; scanning starting from the last physical page of the corresponding physical block according to the mapping table reconstruction request based on the SSD; reading the corresponding logical address and N logical address offsets from a data area of the current physical page, where N is the positive integer greater than 1; acquiring logical addresses corresponding to N adjacent pages in sequence according to the logical address corresponding to the current physical page and the N logical address offsets; reconstructing a mapping relationship between logical addresses and physical addresses according to the logical address corresponding to the current physical page and the logical addresses corresponding to the N adjacent pages.

Method and apparatus of mapping table reconstruction based on SSD, and computer device

A method of reducing FTL address mapping space, including: S1, obtaining a mpa and an offset according to a logical page address; S2, determining whether the mpa is hit in a cache; S3, determining whether a NAND is written into the mpa; S4, performing a nomap load operation, and returning an invalid mapping; S5, performing a map load operation; S6, directly searching a mpci representing a position of the mpa in the cache and searching a physical page address gppa with reference to the offset; S7, determining whether a mapping from a logical address to a physical address needs to be modified; S8, modifying a mapping table corresponding to the mpci in the cache, and marking a mp corresponding to the mpci as a dirty mp; S9, determining whether to trigger a condition of writing the mp into the NAND; and S10, writing the dirty mp into the NAND.

Method and system of reducing address mapping space of flash translation layer

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Shenzhen, China

Weiliang Wang