DATE: Thursday , May 22, 2003
TIME: Noon - 1 pm
PLACE: Hamerschlag Hall D-210
SPEAKER:
Niraj
Tolia
Carnegie Mellon University
TITLE:
Opportunistic Use of Content Addressable Storage for Distributed File
Systems
ABSTRACT:
Motivated by the prospect of using readily available Content Addressable
Storage (CAS) to accelerate distributed file system access, we introduce
the CASPER file system.
Central to CASPER is the concept of file recipes. A file's recipe is a first-class file system object listing content hashes that describe the data blocks composing the file. File recipes provide applications with instructions for reconstructing the original file from available CAS data blocks. One such application of recipes is the CASPER distributed file system.
In CASPER, a client opportunistically fetches blocks from nearby CAS providers to improve its performance when the connection to a file server traverses a low-bandwidth path. The results from our prototype demonstrate significant reduction in execution time for applications that use a network file system.
This work is the result of collaboration with Intel Research Pittsburgh.
BIO:
Niraj Tolia is a first-year Ph.D. student in Electrical and Computer Engineering
at Carnegie Mellon University working with Prof. M. Satyanarayanan. His
current research interests lie in distributed systems, and in distributed
storage systems in particular.
SDI / LCS Seminar Questions?
Karen Lindenfelser, 86716, or visit www.pdl.cmu.edu/SDI/