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Consistency and recovery control for replicated files

Dančo Davčev, Walter A. Burkhard
1985 Proceedings of the tenth ACM symposium on Operating systems principles - SOSP '85  
We present a consistency and recovery control scheme for replicated files.  ...  The accessible physical copies of a replicated file will be mutually consistent and behave like a single copy as far as the user can tell. Our recovery scheme requires no manual intervention.  ...  Introduction We present a consistency and recovery control scheme for replicated files.  ... 
doi:10.1145/323647.323637 dblp:conf/sosp/DavcevB85 fatcat:3id2kwnljra4fa6g74teoumofq

Hierarchical Replication Control in a Global File System

Jiaying Zhang, Peter Honeyman
2007 Seventh IEEE International Symposium on Cluster Computing and the Grid (CCGrid '07)  
We develop a consistent mutable replication extension for NFSv4 tuned to meet the rigorous demands of largescale data sharing in global collaborations.  ...  With the introduction of the hierarchical replication control, the overhead of replication is negligible even when applications mostly write and replication servers are widely distributed.  ...  Many replicated file systems trade consistency for availability. Examples include Coda [15] , Ficus [16] , and Locus [17] .  ... 
doi:10.1109/ccgrid.2007.57 dblp:conf/ccgrid/ZhangH07 fatcat:w3oml3vt7vevbdq3h7jc3lvo3q

Scalability of Replicated Metadata Services in Distributed File Systems [chapter]

Dimokritos Stamatakis, Nikos Tsikoudis, Ourania Smyrnaki, Kostas Magoutis
2012 Lecture Notes in Computer Science  
file system metadata services.  ...  One such area is the management of metadata in distributed file systems.  ...  Acknowledgments We thank Yiannis Kesapidis, Konstantinos Chasapis, and Yiannis Linardakis for contributions to the PVFS implementation.  ... 
doi:10.1007/978-3-642-30823-9_3 fatcat:ivakbjqnwbgjhkcoloom7atu2y

Distributed Databases [chapter]

Shashi Shekhar, Hui Xiong
2008 Encyclopedia of GIS  
It provides high-level, declarative query capability, transaction management (both concurrency control and recovery), and integrity enforcement.  ...  Architectural Alternatives Architecturally, a distributed database system consists of a (possibly empty) set of query sites and a non-empty set of data sites.  ...  Replicated File Systems see Databases, Distributed. Replication Control Protocols see Databases, Distributed. Transaction Management see Databases, Distributed.  ... 
doi:10.1007/978-0-387-35973-1_312 fatcat:y7x35pq3njepzmqkdcph4rpbxi

Replication-Based Highly Available Metadata Management for Cluster File Systems

Zhuan Chen, Jin Xiong, Dan Meng
2010 2010 IEEE International Conference on Cluster Computing  
The performance results show that the latency caused by replication and redundancy is well under control, and the performance of metadata read operation gains improvement.  ...  To guarantee both availability and efficiency, we propose a mechanism for building highly available metadata servers based on replication, which integrates Paxos algorithm effectively into metadata service  ...  Elephant file system [29] retains all important versions of user files and provides a range of versioning options for recovery from user error.  ... 
doi:10.1109/cluster.2010.34 dblp:conf/cluster/ChenXM10 fatcat:2q64rf5uwrcshkhznj3jmit5li

High Security Mechanism: Fragmentation and Replication in the Cloud with Auto Update in the System

Shrutika Khobragade, Rohini Bhosale, Rahul Jiwahe
2020 APTIKOM Journal on Computer Science and Information Technologies  
Here, the replication of fragments is also generated with strong authentication process using key generation. The auto update of a fragment or any file is also done here.  ...  As the file is stored at a particular location which might get affected due to attack and will lost the data.  ...  . • Auto Update and auto replicate of files are done. • Controlled replication for immense security. • Implementation of real cloud.  ... 
doi:10.34306/csit.v5i2.138 fatcat:gecagf3rovhrhk5tl5ft4avh7e

Ginja: One-Dollar Cloud-Based Disaster Recovery For Databases

Joel Alcântara, Tiago Oliveira, Bessani; Alysson
2017 Zenodo  
GINJA works at file-system level to efficiently capture and replicate data updates to a remote cloud storage service, achieving three important goals: (1) reduces the costs for maintaining a cloud-based  ...  Disaster Recovery (DR) is a crucial feature to ensure availability and data protection in modern information systems.  ...  We thank Paulo Sousa from MaxData Software for providing statistics about the laboratory and hospital databases.  ... 
doi:10.5281/zenodo.1163572 fatcat:pfnkrwx5qnc2vhqpjvp2m7avqy

High security mechanism: fragmentation and replication in the cloud with auto update in the system

Shrutika Khobragade, Rohini Bhosale, Rahul Jiwane
2020 Computer Science and Information Technologies  
Here, the replication of fragments is also generated with strong authentication process using key generation. The auto update of a fragment or any file is also done here.  ...  As the file is stored at a particular location which might get affected due to attack and will lost the data.  ...  Recovery of file or fragment is done in version control. 3 Download of whole file and update is done. As it is time consuming.  ... 
doi:10.11591/csit.v1i2.p78-83 fatcat:22v2pvwwz5e55jldmjmb7ndfpi

Improving the availability of supercomputer job input data using temporal replication

Chao Wang, Zhe Zhang, Xiaosong Ma, Sudharshan S. Vazhkudai, Frank Mueller
2009 Computer Science - Research and Development  
We have implemented the temporal replication scheme in the popular Lustre parallel file system and evaluated it with real-cluster experiments.  ...  Therefore, we propose to transparently, selectively, and temporarily replicate "active" job input data by coordinating the parallel file system with the batch job scheduler.  ...  " and "batch") for better control.  ... 
doi:10.1007/s00450-009-0082-8 fatcat:cun3vitb6vgfjgx3hjfwgnfd7u

Unity

Beom Heyn Kim, Wei Huang, David Lie
2012 Proceedings of the 2012 ACM Workshop on Cloud computing security workshop - CCSW '12  
Unity provides secure and durable storage for personal data that does not depend on the security or availability of a central service.  ...  Instead, Unity exploits the trend towards users having more personal computing devices and the increasing amounts of storage available on those devices.  ...  Acknowledgements Funding is provided by the NSERC ISSNet Strategic Network, an NSERC Discovery Grant and an MRI Early Researcher Award.  ... 
doi:10.1145/2381913.2381920 dblp:conf/ccs/KimHL12 fatcat:skdyr3lxnzdvbhvfli2vtzf2wu

Effects of drought stress and water recovery on physiological responses and gene expression in maize seedlings

Xiangbo Zhang, Lei Lei, Jinsheng Lai, Haiming Zhao, Weibin Song
2018 BMC Plant Biology  
deficit and recovery conditions.  ...  Conclusions: Many genes that are differentially expressed in responses to drought stress and water recovery conditions affect photosynthetic systems and hormone biosynthesis.  ...  Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.  ... 
doi:10.1186/s12870-018-1281-x pmid:29685101 pmcid:PMC5913800 fatcat:nzn6hlfqhnh6ve5bvm2lvrhlzy

Survey the storage systems used in HPC and BDA ecosystems [article]

Priyam Shah, Jie Ye, Xian-He Sun
2021 arXiv   pre-print
The protocols and mechanisms used for data storage, data access, data consistency, fault tolerance, and recovery from failover are also overviewed.  ...  In this paper, we're surveying four storage systems Lustre, Ceph, HDFS, and CockroachDB. Lustre and HDFS are some of the most prominent file systems in HPC and BDA ecosystem.  ...  You can control the replication factor at the cluster, database, and table-level using replication zones.  ... 
arXiv:2112.12142v2 fatcat:sthgkofgpvaixgtx4t7x7z6fpu

RADOS

Sage A. Weil, Andrew W. Leung, Scott A. Brandt, Carlos Maltzahn
2007 Proceedings of the 2nd international workshop on Petascale data storage held in conjunction with Supercomputing '07 - PDSW '07  
RADOS preserves consistent data access and strong safety semantics while allowing nodes to act semi-autonomously to selfmanage replication, failure detection, and failure recovery through the use of a  ...  Brick and object-based storage architectures have emerged as a means of improving the scalability of storage clusters.  ...  We thank the members of the SSRC, whose advice helped guide this research and the anonymous reviewers for their insightful feedback.  ... 
doi:10.1145/1374596.1374606 dblp:conf/sc/WeilLBM07 fatcat:zomrs5lr6jd2hmbjt33gxvuj7q

Shared and genetically distinct Zea mays transcriptome responses to ongoing and past low temperature exposure

Luis M Avila, Wisam Obeidat, Hugh Earl, Xiaomu Niu, William Hargreaves, Lewis Lukens
2018 BMC Genomics  
In this study we identify individual transcripts and groups of functionally related transcripts that consistently respond to cold and its alleviation.  ...  After cold exposure, DNA replication and translation genes are still preferentially downregulated. Lignin and suberin biosynthesis are newly down-regulated.  ...  Shoba Sivasankar for their help with study design and interpretation. We thank Dr. Joseph Colasanti and Mr. Mark Minow for manuscript review.  ... 
doi:10.1186/s12864-018-5134-7 fatcat:eded75zuybc2vpz7pujccawd2m

A replicated file system for Grid computing

Jiaying Zhang, Peter Honeyman
2008 Concurrency and Computation  
With the introduction of a hierarchical replication control protocol, the overhead of replication is negligible even when applications mostly write and replication servers are widely distributed.  ...  To meet the rigorous demands of large-scale data sharing in global collaborations, we present a replication scheme for NFSv4 that supports mutable replication without sacrificing strong consistency guarantees  ...  SCI-0438298 and Network Appliance, Inc.  ... 
doi:10.1002/cpe.1286 fatcat:shwbuglgevfmteh6cpdf4pgbai
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