Disconnected operation in the Coda File System
ACM Transactions on Computer Systems (TOCS)
The Challenges of Mobile Computing
Computer
WebOS: Operating System Services for Wide Area Applications
HPDC '98 Proceedings of the 7th IEEE International Symposium on High Performance Distributed Computing
Soda: A File System for a Multicomputer
IWCC '99 Proceedings of the 1st IEEE Computer Society International Workshop on Cluster Computing
An optimistic protocol for partitioned distributed database systems
An optimistic protocol for partitioned distributed database systems
Clockwise: A Mixed-Media File System
ICMCS '99 Proceedings of the 1999 IEEE International Conference on Multimedia Computing and Systems - Volume 02
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While the mobile communication device is developing into the portable information device, it is necessary to design a distributed file-system in such a mobile environment. In order to do it, we must consider the relative shortage of the portable storage and low computation ability of aportable information device as well as unreliable and low-performance networks. By using mobile code technology, we separate a traditional file-system into two parts: one part, which includes the operations and some temporary files that need low computation ability, isimplemented in the client, while the other part(lots operations and services need high computation) are carried out in the server. At first, we define "mobile-file", which includes the "context" and the partition of a special file. Then by constructing an actual file-system in server, which integrates the file-systems of clients in the network, the paper shows how to implement a practical file system and its operations on "mobile-file" and files for a portaldevice. The file-system of a portal device is stored as a part of the file-system of a server, as well as only several partitions of some files, which are using in the portal device (client), and their "context" are temporarily stored in the client. After a client finished a partition, thecorresponding in the server will be updated, and at the same time the present partition will be changed to the next partition. At end of the paper, we provide some simulated experiment results briefly.