Invention Grant
- Patent Title: Write operation verification method and apparatus
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Application No.: US16455564Application Date: 2019-06-27
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Publication No.: US11544223B2Publication Date: 2023-01-03
- Inventor: Viacheslav Dubeyko , Adam Manzanares
- 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: Morgan, Lewis & Bockius LLP
- Main IPC: G06F16/00
- IPC: G06F16/00 ; G06F16/16 ; G06F16/11 ; G06F16/23 ; G06F11/14

Abstract:
A verification architecture described according to embodiments of the present invention validates changes made to metadata and may comprise one or more subsystems and phases. According to some embodiments, the “mkfs” volume creation utility works in cooperation with the device driver to create a file system volume by means of reservation and initialization space for metadata structures inside the device's partition that is reserved for the specific file system volume. The storage device uses a verified area legend when checking write requests after the file system volume has been created. The verified area legends may be stored in a dedicated partition or inside the master boot record (MBR) or Globally Unique Identifier (GUID) partition table (GPT) or special memory chip (NAND flash, for example). Write requests that overlap with any extent of reserved metadata area must be verified to prevent metadata corruption.
Public/Granted literature
- US20190317920A1 WRITE OPERATION VERIFICATION METHOD AND APPARATUS Public/Granted day:2019-10-17
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