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Disconnected operation in the Coda file system

James J. Kistler, M. Satyanarayanan
1991 ACM SIGOPS Operating Systems Review  
In this paper, we show that disconnected operation is feasible, efficient and usable by describing its design and implementation in the Coda File System.  ...  An important, though not exclusive, application of disconnected operation is in supporting portable computers.  ...  If system files are excluded, the absence of Disconnected Operation in the Coda File System . 2 I "E!  ... 
doi:10.1145/121133.121166 fatcat:yozggmkzinb37dat74kn54dr7m

Disconnected operation in the Coda file system

James J. Kistler, M. Satyanarayanan
1991 Proceedings of the thirteenth ACM symposium on Operating systems principles - SOSP '91  
In this paper, we show that disconnected operation is feasible, efficient and usable by describing its design and implementation in the Coda File System.  ...  An important, though not exclusive, application of disconnected operation is in supporting portable computers.  ...  If system files are excluded, the absence of Disconnected Operation in the Coda File System . 2 I "E!  ... 
doi:10.1145/121132.121166 dblp:conf/sosp/KistlerS91 fatcat:7i4xxovainambjrnb46krp5eve

Disconnected operation in the Coda File System

James J. Kistler, M. Satyanarayanan
1992 ACM Transactions on Computer Systems  
In this paper, we show that disconnected operation is feasible, efficient and usable by describing its design and implementation in the Coda File System.  ...  An important, though not exclusive, application of disconnected operation is in supporting portable computers.  ...  If system files are excluded, the absence of Disconnected Operation in the Coda File System . 2 I "E!  ... 
doi:10.1145/146941.146942 fatcat:7e7evjr3ybcfzpgjbxeku2ijse

Disconnected Operation in the Coda File System [chapter]

James J. Kistler, M. Satyanarayanan
The Kluwer International Series in Engineering and Computer Science  
In this paper, we show that disconnected operation is feasible, efficient and usable by describing its design and implementation in the Coda File System.  ...  An important, though not exclusive, application of disconnected operation is in supporting portable computers.  ...  If system files are excluded, the absence of Disconnected Operation in the Coda File System . 2 I "E!  ... 
doi:10.1007/978-0-585-29603-6_19 dblp:conf/mobidata/KistlerS94 fatcat:uq4bsg33hzdvno6jynptvu5dii

The evolution of Coda

M. Satyanarayanan
2002 ACM Transactions on Computer Systems  
In this article, we describe how the Coda file system has evolved to meet this challenge through the development of mechanisms for server replication, disconnected operation, adaptive use of weak connectivity  ...  The article closes with a discussion of the technical and nontechnical lessons that can be learned from the evolution of the system.  ...  The views and conclusions in this paper are those of the author, and do not represent the opinions, express or implied, of the U.S.  ... 
doi:10.1145/507052.507053 fatcat:lob5fyaqh5edrlbxctvkzupcby

Transparent disconnected operation for fault-tolerance

James Jay Kistler, M. Satyanarayanan
1991 ACM SIGOPS Operating Systems Review  
Conclusion We consider the ability to operate while disconnected a significant advantage in a distributed file system.  ...  Introduction In this position paper we describe an important component of our overall approach to achieving high availability in the Coda file system.  ... 
doi:10.1145/122140.122150 fatcat:r3hzgrvxj5g43clbg6i2l56ley

Transparent disconnected operation for fault-tolerance

James Jay Kistler, M. Satyanarayanan
1990 Proceedings of the 4th workshop on ACM SIGOPS European workshop - EW 4  
Conclusion We consider the ability to operate while disconnected a significant advantage in a distributed file system.  ...  Introduction In this position paper we describe an important component of our overall approach to achieving high availability in the Coda file system.  ... 
doi:10.1145/504136.504143 dblp:conf/sigopsE/KistlerS90 fatcat:kixymwerl5e4bgnb4qnbaulb6q

An empirical study of a highly available file system

Brian D. Noble, M. Satyanarayanan
1994 Proceedings of the 1994 ACM SIGMETRICS conference on Measurement and modeling of computer systems - SIGMETRICS '94  
In this paper we present results from a six-month empmcal study of the high availabilityy aspectsof the Coda Fde System.  ...  Finally, we explore how users take advantage of the support provided by Coda for mobile computing  ...  Most importantly, we would like to thank our many users for trusting our system and being patient with "the very last revision of the data collection software, we promise!"  ... 
doi:10.1145/183018.183033 dblp:conf/sigmetrics/NobleS94 fatcat:epk6sun5gzcrzcdenldj2elypq

An empirical study of a highly available file system

Brian D. Noble, M. Satyanarayanan
1994 Performance Evaluation Review  
In this paper we present results from a six-month empmcal study of the high availabilityy aspectsof the Coda Fde System.  ...  Finally, we explore how users take advantage of the support provided by Coda for mobile computing  ...  Most importantly, we would like to thank our many users for trusting our system and being patient with "the very last revision of the data collection software, we promise!"  ... 
doi:10.1145/183019.183033 fatcat:p2ejewuxojfytcgpw7m5y4eabm

Coda: a highly available file system for a distributed workstation environment

M. Satyanarayanan, J.J. Kistler, P. Kumar, M.E. Okasaki, E.H. Siegel, D.C. Steere
1990 IEEE transactions on computers  
Coda is a file system for a large-scale distributed computing environment composed of Unix workstations.  ...  The other mechanism, disconnected operation, is a mode of execution in which a caching site temporarily assumes the role of a replication site.  ...  Coda.  ... 
doi:10.1109/12.54838 fatcat:47m5742yjngpletdcp7gj7ss6y

A research status report on adaptation for mobile data access

Brian D. Noble, M. Satyanarayanan
1995 SIGMOD record  
We report on our considerable experience with application-transparent adaptation in the Coda File System. We also describe our ongoing work on application-aware adaptation in Odyssey.  ...  An alternative approach views adaptation as a collaborative partnership between applications and the system. This paper is a status report on our research on both fronts.  ...  Conflict resolution [4, 5] Disconnected operation [3, 12] Weakly connected operation [8, 7] Isolation-only transactions [6] Tools and building blocks [9, 2, 13] Odyssey design [14, 10] .  ... 
doi:10.1145/219713.219730 fatcat:7um4mjcz2zannd32cgbt32d2aq

Isolation-only transactions for mobile computing

Qi Lu, M. Satyanaranyanan
1994 ACM SIGOPS Operating Systems Review  
Background: The Coda File System Providing portable computers convenient access to shared data in distributed Unix file systems is an important research topic in the fast growing field of mobile computing  ...  The Coda file system addresses this issue by hiding mobility from applications and users [10] . It provides continuous file access to mobile clients even when they are disconnected from the servers.  ...  Acknowledgements We wish to thank Jay Kistler for his valuable help in formulating the initial IOT framework.  ... 
doi:10.1145/198153.198164 fatcat:kebha3tq4jaatfz2qhfbn7nbkq

The influence of scale on distributed file system design

M. Satyanarayanan
1992 IEEE Transactions on Software Engineering  
Performance, operability, and security are dominant considerations in the design of these systems. Availability is a further consideration in the design of Coda.  ...  This paper uses Andrew and Coda, distributed file systems built at Carnegie Mellon University, to validate this proposition.  ...  They also contribute to scalability in a more indirect way by enabling disconnected operation in Coda.  ... 
doi:10.1109/32.120311 fatcat:ucixxxpvtzgmbjxwddeygfrfw4

The importance of translucence in mobile computing systems

Maria R. Ebling, Bonnie E. John, M. Satyanarayanan
2002 ACM Transactions on Computer-Human Interaction  
The Coda file system uses its cache to maintain this illusion.  ...  The CodaConsole successfully makes caching translucent in the presence of disconnected or weakly connected operation.  ...  If the system is operating disconnected with respect to one or more Coda servers, then the indicator shows red.  ... 
doi:10.1145/505151.505153 fatcat:uc4g6oussnemznod5xvyamphgu

Document Archiving, Replication and Migration Container for Mobile Web Users [article]

P. Stanski, S. Giles, A. Zaslavsky
1998 arXiv   pre-print
This paper discusses issues of workstation mobility and proposes a solution wherein the data structures are accessed in an encapsulated form - through the Portable File System (PFS) wrapper.  ...  The paper discusses an implementation of the Portable File System, highlighting the architecture and commenting upon performance of an experimental system.  ...  Acknowledgments The authors would like to thank John Ng for obtaining the original Boa archive and the inspiration which led to the extension of Boa.  ... 
arXiv:cs/9809036v1 fatcat:whuhnlf4nraprnhxvkjkkkwceu
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