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SCALABLE SYSTEM FOR PARTITIONING AND ACCESSING METADATA OVER MULTIPLE SERVERS

  • US 20110087696A1
  • Filed: 12/20/2010
  • Published: 04/14/2011
  • Est. Priority Date: 01/20/2005
  • Status: Active Grant
First Claim
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1. A method of handling a file processing request in an aggregated file system, comprising:

  • receiving a request with respect to a file, the request identifying an absolute pathname of the file in the aggregated file system;

    identifying a target metadata volume that hosts metadata of the file among the metadata volumes in accordance with the request and one or more mount entries each associated with a respective one of a plurality of metadata volumes, including recursively identifying a mount entry when associated with a current metadata volume, wherein the mount entry identifies a relative pathname matching a respective portion of the absolute pathname, the identified relative pathname further comprising pathname sub-components of sizes ranging from one pathname component to a size of the identified relative pathname; and

    selecting at least one of the pathname sub-components is selected using the identified mount entry based upon a number indicated in a list entry pointed to by the identified mount entry in response to the request to a file switch for assembling the file.

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