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File management method, distributed storage system, and management node

  • US 10,152,233 B2
  • Filed: 02/09/2017
  • Issued: 12/11/2018
  • Est. Priority Date: 08/12/2014
  • Status: Active Grant
First Claim
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1. A file management method, wherein the method is applied to a distributed storage system, the distributed storage system comprises a management node and multiple storage nodes, and the method comprises:

  • receiving, by the management node, a file creation request sent by a host to create a file in the distributed storage system;

    allocating, by the management node to the file, first virtual space from global virtual address space of the distributed storage system according to the file creation request, wherein local virtual address space of each storage node in the distributed storage system corresponds to a part of the global virtual address space;

    recording, by the management node, metadata of the file comprising information about the first virtual space allocated to the file, the information about the first virtual space points to first local virtual address space of a first storage node that stores the file; and

    sending, by the management node, a file creation success response to the host carrying the information about the first virtual space.

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