Prof. Dr. Adrian Perrig

aperrig

Prof. Dr. Adrian Perrig

CAB F 85.1
Universit├Ątstrasse 6
8092 Z├╝rich

Phone: +41 44 632 99 69
E-Mail: adrian.perrig@inf.ethz.ch



Our main project is on the SCION secure Internet architecture.
We have founded Anapaya Systems, a startup to commercialize SCION technology.

Publications

by Niraj Tolia, Michael Kozuch, Mahadev Satyanarayanan, Brad Karp, Thomas Bressoud and Adrian Perrig
Abstract:
Motivated by the prospect of readily available Content Addressable Storage (CAS), we introduce 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. We describe one such application of recipes, the CASPER distributed file system. A CASPER client opportunistically fetches blocks from nearby CAS providers to improve its performance when the connection to a file server traverses a low-bandwidth path. We use measurements of our prototype to evaluate its performance under varying network conditions. Our results demonstrate significant improvements in execution times of applications that use a network file system. We conclude by describing fuzzy block matching, a promising technique for using approximately matching blocks on CAS providers to reconstitute the exact desired contents of a file at a client.
Reference:
Opportunistic Use of Content Addressable Storage for Distributed File Systems. Niraj Tolia, Michael Kozuch, Mahadev Satyanarayanan, Brad Karp, Thomas Bressoud and Adrian Perrig. In Proceedings of USENIX Annual Technical Conference (USENIX ATC) 2003.
Bibtex Entry:
@InProceedings{TKSKBP2003,
  author = 		 {Niraj Tolia and Michael Kozuch and Mahadev Satyanarayanan and Brad Karp and Thomas Bressoud and Adrian Perrig},
  title = 		 {Opportunistic Use of Content Addressable Storage for Distributed File Systems},
  url = {/publications/papers/usenix03.pdf},
  booktitle =	 {Proceedings of USENIX Annual Technical Conference (USENIX ATC)},
  year =		 2003,
  month =		 jun,
  abstract =	 {Motivated by the prospect of readily available
                  Content Addressable Storage (CAS), we introduce 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. We describe one such
                  application of recipes, the CASPER distributed file
                  system. A CASPER client opportunistically fetches
                  blocks from nearby CAS providers to improve its
                  performance when the connection to a file server
                  traverses a low-bandwidth path. We use measurements
                  of our prototype to evaluate its performance under
                  varying network conditions. Our results demonstrate
                  significant improvements in execution times of
                  applications that use a network file system. We
                  conclude by describing fuzzy block matching, a
                  promising technique for using approximately matching
                  blocks on CAS providers to reconstitute the exact
                  desired contents of a file at a client.}
}