Invention Grant
- Patent Title: Delayed write failure logging
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Application No.: US16452128Application Date: 2019-06-25
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Publication No.: US11294807B2Publication Date: 2022-04-05
- Inventor: Rajeev Nagabhirava , Avichay Haim Hodes , Judah Gamliel Hahn
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Patterson & Sheridan, LLP
- Agent Steven H. Versteeg
- Main IPC: G06F11/00
- IPC: G06F11/00 ; G06F12/0804 ; G06F11/14 ; G06F12/10

Abstract:
The present disclosure generally relates to a method and device for reduce the amount of energy used to revert data within a storage device to a consistent state after a power loss event. Once power is lost from a host device, and prior to complete shutdown, a log is created within non-volatile memory (NVM) of the storage device. The log contains logical block addresses (LBAs) corresponding to data that experienced a write failure. At the next power-on event, the log is checked to see if any LBAs are present. If LBAs are present in the log, then the data that experienced a write failure can be properly written to the storage device.
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