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Mechanism for maintaining constant permissions for multiple instances of a device within a cluster

  • US 6,173,413 B1
  • Filed: 05/12/1998
  • Issued: 01/09/2001
  • Est. Priority Date: 05/12/1998
  • Status: Expired due to Term
First Claim
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1. A distributed computing system comprising:

  • a first node, a second node, a storage device and a communication link coupled to said first node and said second node, wherein said first node and said second node access a storage device;

    a database for storing data, wherein the data comprises permission data associated with the storage device;

    wherein the first node comprises a first instance of the database, and wherein when the first node opens the storage device, the first node creates a first device file for the storage device using the permission data stored within the first instance of the database;

    wherein the second node comprises a second instance of the database, and wherein when the second node opens the storage device, the second node creates a second device file for the storage device using the permission data stored within the second instance of the database; and

    wherein the database provides coherent data to the first and second nodes in the presence of a node failure such that the first and second nodes receive consistent permission data in the presence of a node failure.

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