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METADATA MANAGEMENT METHOD FOR NAS GLOBAL NAMESPACE DESIGN

  • US 20110231524A1
  • Filed: 03/17/2010
  • Published: 09/22/2011
  • Est. Priority Date: 03/17/2010
  • Status: Active Grant
First Claim
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1. A method of managing a global namespace (GNS) for a network system including a plurality of network-attached storage (NAS) devices connected together by a network, comprising the steps of:

  • organizing a plurality of metadata servers each into one of a cluster layer having a plurality of cluster nodes and a consistent hashing overlay layer having a plurality of overlay nodes,constructing a GNS namespace, including steps of creating a GNS hierarchy above share folders of the NAS devices and constructing the GNS hierarchy under the share folders, wherein the creating and constructing steps are performed by a cluster node in the cluster layer,synchronizing the constructed GNS namespace across all cluster nodes in the cluster layer,setting first and second portions of the GNS namespace to be managed by the cluster layer and consistent hashing overlay layer, respectively, anddynamically adjusting at least one of the first and second portions of the GNS namespace to be managed by the cluster layer and consistent hashing overlay layer, respectively, based on workload of the metadata servers.

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