Transaction Supporting Realtime File System in a Distributed Environment

A transaction is a set of read and write comnands surrounded by BEGIN and END, and these structured commands are sent by a client to the file system. To ensure successful transaction update, it should have an atomic property and be processed in serially ordered fashion. The purpose of this paper is to develop a file system which has realtime attributes and wkich can support nested transaction services between geographically distributed systems. In order to support this transaction service correctly, this system provides locking and logging capabilities, and realtime features of the file system are achieved by providing a fast retiponse and timeout service to the user. We have designed locking, logging mechanisms for transaction support and have designed a new kernel structure in-order to support a realtime features.