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DISK FAULT TOLERANCE METHOD, DEVICE AND SYSTEM

  • US 20140229763A1
  • Filed: 04/22/2014
  • Published: 08/14/2014
  • Est. Priority Date: 01/22/2013
  • Status: Active Grant
First Claim
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1. A disk fault tolerance method, comprising:

  • receiving a file access request, in which an identifier of a file is carried;

    according to a pre-stored correspondence between identifiers of files and node lists as well as the identifier of the file, acquiring one or more node lists corresponding to the file, wherein each node list comprises at least two nodes, each node comprises a plurality of disks, there is a one-to-one correspondence between the disks included in the respective nodes in a single node list, and the mutually corresponding disks between the respective nodes store the same contents;

    selecting a node from each of the acquired node lists respectively, and accessing data chunks included in the file from respective nodes selected from each of the node lists according to the identifier of the file; and

    when an accessing from a certain node fails, selecting another node from the node list that comprises the certain node, and accessing a respective data chunk included in the file from the selected node according to the identifier of the file.

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