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Adaptive power cycle sequences for data recovery

  • US 9,372,755 B1
  • Filed: 10/05/2011
  • Issued: 06/21/2016
  • Est. Priority Date: 10/05/2011
  • Status: Active Grant
First Claim
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1. A method for a power cycle recovery sequence in a computing device, comprising:

  • providing, in a cache, a free list block comprising free list entries pointing to sections in a memory in a system;

    scanning the free list block to determine if each used free section is dirty, wherein a used free section that is dirty will require an update of a directory (DirBlk) and information directory block (BlkInfoDirBlk) that are associated with the used free section, and wherein each used free section stores user data;

    if any given used free section is dirty, then performing a power cycle recovery sequence of the information directory block (BlkInfoDirBlk) and performing a power cycle recovery sequence of the directory (DirBlk);

    scanning each free section that is pointed to by each free list entry; and

    if any given free section is clean, then performing a power cycle recovery sequence for the information directory block (BlkInfoDirBlk), and if the given free section is dirty, then erasing the given free section.

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