Invention Grant
- Patent Title: Method and system for facilitating data recovery and version rollback in a storage device
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Application No.: US16904089Application Date: 2020-06-17
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Publication No.: US11354200B2Publication Date: 2022-06-07
- Inventor: Shu Li
- Applicant: Alibaba Group Holding Limited
- Applicant Address: KY Grand Cayman
- Assignee: Alibaba Group Holding Limited
- Current Assignee: Alibaba Group Holding Limited
- Current Assignee Address: KY Grand Cayman
- Agency: Yao Legal Services, Inc.
- Agent Shun Yao
- Main IPC: G06F11/14
- IPC: G06F11/14 ; G06F12/02 ; G06F12/0808

Abstract:
One embodiment provides a system which facilitates organization of data. During operation, the system receives data associated with a logical block address (LBA) to be written to a non-volatile memory. The system stores, in a data structure, a mapping of a first physical block address (PBA) corresponding to the LBA to a first status for the data, wherein the first status indicates data validity and recovery being enabled for the data. Responsive to receiving a command to delete the data, the system modifies the first status to indicate data invalidity and recovery being enabled for the data. Responsive to receiving a command to recover the previously deleted data, the system modifies the first status to indicate data validity and recovery being enabled for the data.
Public/Granted literature
- US20210397523A1 METHOD AND SYSTEM FOR FACILITATING DATA RECOVERY AND VERSION ROLLBACK IN A STORAGE DEVICE Public/Granted day:2021-12-23
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