Invention Grant
- Patent Title: Method for facilitating recovery from crash of solid-state storage device, method of data synchronization, computer system, and solid-state storage device
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Application No.: US16797944Application Date: 2020-02-21
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Publication No.: US11263180B2Publication Date: 2022-03-01
- Inventor: Yun-Sheng Chang , Ren-Shuo Liu
- Applicant: National Tsing Hua University
- Applicant Address: TW Hsinchu
- Assignee: National Tsing Hua University
- Current Assignee: National Tsing Hua University
- Current Assignee Address: TW Hsinchu
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Main IPC: G06F12/00
- IPC: G06F12/00 ; G06F16/178 ; G06F3/06 ; G06F12/1009 ; G06F12/0875 ; G06F12/0804

Abstract:
A method for facilitating recovery from a crash of a solid-state storage device (SSD) is adapted to be implemented by an SSD controller of the SSD that receives a write request. The method includes: assigning a write request identifier (WID) and a request size in a spare area of each written page of the SSD; counting a number of appearances of the WID in all written page(s) to result in a WID count; determining whether the WID count is equal to the request size; and determining that the write request is completed and is eligible for recovery after a crash of the SSD when it is determined that the WID count is equal to the request size.
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