Invention Grant
US09128863B2 Detection and correction of corrupted or dangling data object handles 有权
检测和纠正损坏或悬挂的数据对象句柄

  • Patent Title: Detection and correction of corrupted or dangling data object handles
  • Patent Title (中): 检测和纠正损坏或悬挂的数据对象句柄
  • Application No.: US14186794
    Application Date: 2014-02-21
  • Publication No.: US09128863B2
    Publication Date: 2015-09-08
  • Inventor: Sundeep Singh
  • Applicant: NetApp, Inc.
  • Applicant Address: US CA Sunnyvale
  • Assignee: NetApp, Inc.
  • Current Assignee: NetApp, Inc.
  • Current Assignee Address: US CA Sunnyvale
  • Agency: Mahamedi Paradice LLP
  • Main IPC: G06F17/30
  • IPC: G06F17/30 G06F11/10
Detection and correction of corrupted or dangling data object handles
Abstract:
Exemplary embodiments provide various techniques for detecting and correcting corrupted or dangling data object handles. In one example, a method is provided for correcting corrupted data object handles. In this method, a redirector file stored on a first logical data container is accessed. This redirector file includes a forward object handle pointing to a first data object stored on a second logical data container and includes a first checksum of the forward object handle. A second checksum of the forward object handle is determined and a comparison is made between the first and second checksums. If a mismatch is detected, the data objects stored on the second logical data container are scanned to extract backward object handles. A backward object handle can be identified to point back to the redirector file. The forward object handle can then be restored to point to the second data object based on the identification.
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