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Ensuring metadata and index consistency using write intents

  • US 10,379,961 B2
  • Filed: 04/11/2017
  • Issued: 08/13/2019
  • Est. Priority Date: 04/11/2017
  • Status: Active Grant
First Claim
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1. A method for execution by one or more processing modules of one or more computing devices of a dispersed storage network (DSN), the method comprises:

  • receiving a write data object request;

    writing and committing the data object as a set of encoded data slices into DSN memory;

    writing and committing an index consistency write-intent to DSN memory, wherein the index consistency write-intent specifies an intention to check, at a later time, for a consistent index with matching metadata associated with the data object;

    writing metadata of the data object to DSN memory;

    writing and committing an index entry to DSN memory;

    committing the metadata of the data object to DSN memory;

    deleting the index consistency write-intent; and

    notifying a write data object requestor of a successful data object write.

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