A Highly Reliable Metadata Service for Large-Scale Distributed File Systems

The keyestablishment for secure many-to-many communications is very important nowadays. The problem is inspired by the proliferation of large-scale distributed file systems supporting parallel access to multiple storage devices. In this, a variety of authenticated key exchange protocols that are designed to address the issues. This shows that these protocols are capable of reducing the workload of the metadata server and concurrently supporting forward secrecy and escrow-freeness. All this requires only a small fraction of increased computation overhead at the client. This proposed three authenticated key exchange protocols for parallel network file system (pNFS). The protocols offer three appealing advantages over the existing Kerberos-based protocol. First, the metadata server executing these protocols has much lower workload than that of the Kerberos-based approach. Second, two of these protocols provide forward secrecy: one is partially forward secure (with respect to multiple sessions within a time period), while the other is fully forward secure (with respect to a session). Third, designed a protocol which not only provides forward secrecy, but is also escrow-free.

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An Efficient Ring-Based Metadata Management Policy for Large-Scale Distributed File Systems

IEEE Transactions on Parallel and Distributed Systems ◽

10.1109/tpds.2019.2901883 ◽

2019 ◽

Vol 30 (9) ◽

pp. 1962-1974 ◽

Cited By ~ 1

Author(s):

Yuanning Gao ◽

Xiaofeng Gao ◽

Xiaochun Yang ◽

Jiaxi Liu ◽

Guihai Chen

Keyword(s):

Large Scale ◽

File Systems ◽

Management Policy ◽

Metadata Management ◽

Distributed File Systems

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High Performance Metadata Management Engine for Large-Scale Distributed File Systems

2015 9th International Conference on Future Generation Communication and Networking (FGCN) ◽

10.1109/fgcn.2015.12 ◽

2015 ◽

Cited By ~ 1

Author(s):

Myung-Hoon Cha ◽

Sang-Min Lee ◽

Dong-Oh Kim ◽

Hong-Yeon Kim ◽

Young-Kyun Kim

Keyword(s):

High Performance ◽

Large Scale ◽

File Systems ◽

Metadata Management ◽

Distributed File Systems

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Log-Less Metadata Management on Metadata Server for Parallel File Systems

The Scientific World JOURNAL ◽

10.1155/2014/813521 ◽

2014 ◽

Vol 2014 ◽

pp. 1-8

Author(s):

Jianwei Liao ◽

Guoqiang Xiao ◽

Xiaoning Peng

Keyword(s):

Performance Improvement ◽

File System ◽

File Systems ◽

Metadata Management ◽

Distributed File Systems ◽

Data Throughput ◽

Management Schemes ◽

Metadata Processing ◽

Metadata Server ◽

Metadata Service

This paper presents a novel metadata management mechanism on the metadata server (MDS) for parallel and distributed file systems. In this technique, the client file system backs up the sent metadata requests, which have been handled by the metadata server, so that the MDS does not need to log metadata changes to nonvolatile storage for achieving highly available metadata service, as well as better performance improvement in metadata processing. As the client file system backs up certain sent metadata requests in its memory, the overhead for handling these backup requests is much smaller than that brought by the metadata server, while it adopts logging or journaling to yield highly available metadata service. The experimental results show that this newly proposed mechanism can significantly improve the speed of metadata processing and render a better I/O data throughput, in contrast to conventional metadata management schemes, that is, logging or journaling on MDS. Besides, a complete metadata recovery can be achieved by replaying the backup logs cached by all involved clients, when the metadata server has crashed or gone into nonoperational state exceptionally.

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