Title :
Disk space guarantees as a distributed resource management problem: A case study
Author :
Devarakonda, Murthy ; Ladi, Ananda Rao ; Zlotek, Andy ; Mohindra, Ajay
Author_Institution :
IBM Thomas J. Watson Res. Center, Yorktown Heights, NY, USA
Abstract :
In the single system UNIX, successful completion of a write system call implies a guarantee of adequate disk space for any new pages created by the system call. To support such a guarantee in a distributed file system designers need to solve the problems of accurately estimating the space needed, communication overhead, and fault tolerance. In the Calypso file system, which is a cluster-optimized, distributed UNIX file system, we solve these problems using an advance-reservation scheme. Measurements show that the overhead of this scheme for typical UNIX usage patterns is 1% to 3%
Keywords :
Unix; fault tolerant computing; operating systems (computers); resource allocation; Calypso file system; advance-reservation scheme; cluster-optimized; communication overhead; disk space guarantees; distributed UNIX file system; distributed file system; distributed resource management problem; fault tolerance; single system UNIX; write system call; Communication system operations and management; Computer aided software engineering; Extraterrestrial measurements; Fault tolerant systems; File servers; File systems; Protocols; Resource management; Sockets; Sprites (computer);
Conference_Titel :
Parallel and Distributed Processing, 1995. Proceedings. Seventh IEEE Symposium on
Conference_Location :
San Antonio, TX
Print_ISBN :
0-81867195-5
DOI :
10.1109/SPDP.1995.530697
