×

Managing atomic updates on metadata tracks in a storage system

  • US 20060106891A1
  • Filed: 11/18/2004
  • Published: 05/18/2006
  • Est. Priority Date: 11/18/2004
  • Status: Active Grant
First Claim
Patent Images

1. A method for performing atomic updates on metadata tracks in a storage subsystem, comprising:

  • staging a first of a plurality of metadata tracks to be updated from a disk storage to cache storage;

    storing a first journal entry in a nonvolatile storage (NVS) for the metadata track, the first journal entry comprising an opcode and update data for the metadata track, the opcode identifying a type of metadata update and a number of metadata tracks to be updated;

    repeating the staging and journaling steps for each other metadata track to be updated;

    applying each journaled update to the respective metadata track in the cache storage; and

    destaging each of the metadata tracks from the cache storage to the disk storage.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×