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Title: Distributed metadata servers in a file system with separate metadata servers for file metadata and directory metadata

Patent ·
OSTI ID:1495211

A file system is provided having a plurality of distributed metadata servers with separate metadata servers for file metadata and directory metadata. An exemplary distributed metadata storage system comprises a plurality of compute nodes, wherein at least one compute node comprises a file system client that generates a directory metadata request and/or a file metadata request; a plurality of directory metadata servers to serve directory metadata in response to a given directory metadata request; and a plurality of file metadata servers to serve file metadata in response to a given file metadata request. The plurality of directory metadata servers are distinct from the plurality of file metadata servers. The compute nodes optionally comprise an object client that requests object data from an object store system. The number of directory metadata servers and the number of file metadata servers are optionally determined independently to balance for different workloads, and can be dynamically readjusted for evolving workloads.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC52-06NA25396
Assignee:
EMC IP Holding Company LLC (Hopkinton, MA); Los Alamos National Security, LLC (Los Alamos, NM)
Patent Number(s):
10,140,304
Application Number:
14/965,257
OSTI ID:
1495211
Resource Relation:
Patent File Date: 2015 Dec 10
Country of Publication:
United States
Language:
English

References (8)

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Inode based policy identifiers in a filing system patent June 2010
Managing metadata patent January 2011
Method and apparatus for providing a key-value based storage interface patent April 2014
System and method to maximize server resource utilization and performance of metadata operations patent November 2015
Virtual file system providing interface between analytics platform and physical file system patent April 2016
Distributed metadata servers for cluster file systems using shared low latency persistent key-value metadata store patent December 2017
DualFS: a new journaling file system without meta-data duplication conference January 2002